ふくしま国際医療科学センター放射線医学県民健康管理センター
基本調査・線量評価室長(兼務)
情報管理・統計室長(兼務)
ふくしま国際医療科学センター先端臨床研究センター
環境動態調査部門長(兼務)

研究
1.1993年-2000年(放射線医学総合研究所)
ホールボディカウンタ(体内放射能測定装置)の校正方法の高精度化に関する研究
モンテカルロシミュレーション、数学ファントムを用いた校正
精密な物理ファントムを用いた校正法の検討
体内カリウムの年齢、年代による変化等の解析
東海村JCO臨界事故における重度被ばく患者や住民の線量評価

2.2001年-2013年(放射線医学総合研究所)
国内外の高自然放射線地域のフィールド調査
地震とラドン濃度異常
ラドン・トロン測定値の品質保証(校正)に関わる室内実験
水中ラドンの測定
呼吸気道モデルを用いた吸入被ばく線量評価
土壌中におけるラドンの拡散に関する研究
ラドン散逸率に関するフィールド調査
原発事故後の屋内外放射性物質濃度の連続測定

3.2013年-(福島県立医科大学)
県民健康調査・基本調査(事故後4か月間の外部被ばく線量評価)をはじめとする事故後の内部・外部被ばく線量評価

活動紹介

論文

2021
  1. Kranrod C., Chanyotha S., Tokonami S., Ishikawa T.,A simple technique for measuring the activity size distribution of radon and thoron progeny aerosols.Journal of Environmental Radioactivity  229-230,   106506   (2021).

  2. Igarashi Y., Kim E., Hashimoto S., Tani K., Yajima K., Iimoto T., Ishikawa T., Akashi M., Kurihara O.,Difference in the Cesium Body Contents of Affected Area Residents Depending on the Evacuation Timepoint Following the 2011 Fukushima Nuclear Disaster.Health physics  119 (6) 733 – 745,  ( 2020).

  3. Sorimachi A., Nagamatsu Y., Omori Y., Ishikawa T., Comparison experiments for radon and thoron measuring instruments at low-level concentrations in one room of a Japanese concrete building. Applied Radiation and Isotopes 173, 109696 (2021).

  4. Tamakuma Y., Hosoda M., Omori Y., Nagahama H., Ishikawa T., Shimo M., Tokonami S., Car-borne survey for a black shale area and influence of snowfall on absorbed dose rate in air of a coastal area. Radiation Environment and Medicine 10(2), accepted (2021).

2020
  1. Ohba T., Ishikawa T., Nagai H., Tokonami S., Hasegawa A., Suzuki G.,Reconstruction of residents’ thyroid equivalent doses from internal radionuclides after the Fukushima Daiichi nuclear power station accident.Scientific reports  10 (1) 3639(2020-02)

  2. Ohira T., Shimura H., Hayashi F., Nagao M., Yasumura S., Takahashi H., Suzuki S., Matsuzuka T., Suzuki S., Iwadate M., Ishikawa T., Sakai A., Suzuki S., Nollet KE., Yokoya S., Ohto H., Kamiya K., Fukushima Health Management Survey Group.,Absorbed radiation doses in the thyroid as estimated by UNSCEAR and subsequent risk of childhood thyroid cancer following the Great East Japan Earthquake.Journal of Radiation Research  61 (2) 243 – 248,   (2020).

  3. Ishikawa T., Yasumura S., Akahane K., Yonai S., Ohtsuru A., Sakai A., Ohira T., Kamiya K.,Age dependence of individual external doses in an early stage after the fukushima nuclear accident.Radiation Protection Dosimetry  188 (2) 238 – 245,  (2020).

  4. Ishikawa T.,Individual Doses to the Public after the Fukushima Nuclear Accident.Journal of Radiation Protection and Research  45 (2) 53 – 68,   (2020).

  5. Takahashi H., Yasumura S., Takahashi K., Ohira T., Ohtsuru A., Midorikawa S., Suzuki S., Shimura H., Ishikawa T., Sakai A., Suzuki S., Yokoya S., Tanigawa K., Ohto H., Kamiya K.,Nested matched case control study for the Japan Fukushima Health Management Survey’s first full-scale (second-round) thyroid examination.Medicine  99 (27) e20440,   (2020).

  6. Omori Y., Shimo M., Janik M., Ishikawa T., Yonehara H., Variable strength in thoron interference for a diffusion-type radon monitor depending on ventilation of the outer air. International Journal of Environmental Research and Public Health 17(3), 974 (2020).

2019
  1. Omori Yasutaka., Ishikawa Takuma., Sorimachi Atsuyuk., Ishikawa Tetsuo.,DISTRIBUTIONS OF INDOOR GAMMA DOSE RATES IN RELATION TO GAMMA-RAY EMISSIONS FROM BUILDING MATERIALS: CASE STUDY OF HIGH-RISE CONCRETE BUILDING IN FUKUSHIMA.,Radiation protection dosimetry  184 (1) 116 – 126 (2019-07)

  2. Abe Y, Noji H., Miura T., Sugai M., Kurosu Y., Ujiie R., Tsuyama N., Yanagi A., Yanai Y., Ohba T., Ishikawa T., Kamiya K., Yoshida MA., Sakai A.,Investigation of the cumulative number of chromosome aberrations induced by three consecutive CT examinations in eight patients.Journal of Radiation Research  60 (6) 729 – 739,   (2019).

  3. Ishikawa T., Yasumura S., Akahane K., Yonai S., Ohtsuru A., Sakai A., Sakata R., Ohira T., Kamiya K.,The latest update on individual external doses in an early stage after the Fukushima nuclear accident.Radiation protection dosimetry  187 (3) 402 – 406,   (2019).

  4. Ohira T., Ohtsuru A., Midorikawa S., Takahashi H., Yasumura S., Suzuki S., Matsuzuka T., Shimura H., Ishikawa T., Sakai A., Suzuki S., Yamashita S., Yokoya S., Tanigawa K., Ohto H., Kamiya K., Fukushima Health Management Survey group.,External Radiation Dose, Obesity, and Risk of Childhood Thyroid Cancer after the Fukushima Daiichi Nuclear Power Plant Accident: The Fukushima Health Management Survey.Epidemiology (Cambridge, Mass.)  30 (6) 853 – 860,  ( 2019).

  5. Takiguchi M., Ohira T., Nakano H., Yumiya Y., Yamaki T., Yoshihisa A., Nakazato K., Suzuki H., Ishikawa T., Yasumura S., Kamiya K., Takeishi Y.,Trends in the Incidence of Sudden Deaths and Heart Diseases in Fukushima After the Great East Japan Earthquake.International heart journal  60 (6) 1253 – 1258,   (2019).

  6. Ishikawa T., Yasumura Y., Sakai A., Ohtsuru A., Miyazaki M., Hosoya M., Ohira T., Kamiya K.,Experience in individual dose estimation after the Fukushima nuclear accident using self-administered questionnaires -activities to encourage responses to the questionnaires and resulting response rate-.Radiation Environment and Medicine  8 (2) 118 – 126,   (2019).

  7. 大津留 晶., 緑川 早苗., 熊谷 敦史., 安井 清孝., 大葉 隆., 千葉 靖子., 宮崎 真., 佐藤 久志., 長谷川 有史., 津山 尚宏., 坂井 晃., 石川 徹夫.,放射線健康リスク科学教育の医学教育における潮流と本学での取り組み.福島医学雑誌  69 (1) 85 – 94,  (2019).

  8. Kojima Y., Yokoya S., Kurita N., Idaka T., Ishikawa T., Tanaka H., Ezawa Y., Ohto H.,Cryptorchidism after the Fukushima Daiichi Nuclear Power Plant accident:causation or coincidence?.Fukushima journal of medical science  65 (3) 76 – 98 ,  (2019)

  9. Sorimachi A., Tokonami S., Omori Y., Janik M., Iwaoka K., Ishikawa T., Sun Q.-F., Characteristics of indoor radon and thoron concentrations in cave dwellings in Gansu Province, China. Radiation Protection Dosimetry 184(3-4), 457-462 (2019).

  10. Omori Y., Inoue S., Otsuka T., Nagamatsu Y., Sorimachi A., Ishikawa T., Reduction in ambient gamma dose rate from radiocesium due to sow cover. Radiation Protection Dosimetry 184(3-4), 510-513 (2019).

  11. Omori Y., Ishikawa T., Sorimachi A., Ishikawa T., Distributions of indoor gamma dose rates in relation to gamma-ray emissions from building materials: case study of high-rise concrete building in Fukushima.Radiation Protection Dosimetry, 184(1), 116-126 (2019).

2018
  1. Ishikawa T., Yasumura S., Ozasa K., Miyazaki M., Hosoya M., Akahane K., Yonai S., Ohtsuru A., Sakai A., Sakata R., Kurihara O., Kobashi G., Ohira T., Kamiya K., External dose estimation in an early stage after the Fukushima Daiichi Nuclear Power Plant accident -Lessons learned from behavior surveys using self-administered questionnaires. Japanese Journal of Health Physics 53(2), 100-110 (2018).

  2. Ishikawa T., Matsumoto M., Sato T., Yamaguchi I., Kai M., Internal doses from radionuclides and their health effects following the Fukushima accident. Journal of Radiological Protection 38(4), 1253-1268 (2018).

  3. Kato T., Janik M., Kanda R., Ishikawa T., Kawase M., Kawamoto T.,  Environmentally Friendly Measurement of Airborne Radon Using a Nonvolatile Liquid Scintillation Absorbent. Health Physics 115(2), 203-211 (2018).

  4. Ohira T., Takahashi H., Yasumura S., Ohtsuru A., Midorikawa S., Suzuki S., Matsuzuka T., Shimura H., Ishikawa T., Sakai A., Yamashita S., Tanigawa K., Ohto H., Kamiya K., Suzuki S., Fukushima Health Management Survey Group., Associations Between Childhood Thyroid Cancer and External Radiation Dose After the Fukushima Daiichi Nuclear Power Plant Accident. Epidemiology 29(4), e32-e34 (2018).

  5. Omori Y., Sorimachi A., Ishikawa T., Measurement of gamma radiation at junior high school sites in Fukushima City. Radiation Environment and Medicine 7(1), 21-27 (2018).

2017
  1. Kurihara O., Kim E., Kunishima N., Tani K., Ishikawa T., Furuyama K., Hashimoto S., Akashi M., Development of a tool for calculating early internal doses in the Fukushima Daiichi nuclear power plant accident based on atmospheric dispersion simulation. EPJ Web of Conferences 153, 08008 (2017).

  2. Zunic Z.S., Stojanovska Z., Veselinovic N., Mishra R., Yarmoshenko I.V., Sapra B.K., Ishikawa T., Omori Y., Curguz Z., Bossew P., Udovicic V., Ramola R.C., Indoor radon, thoron and their progeny concentrations in high thoron rural Serbia environments. Radiation Protection Dosimetry 177(1-2), 36-39 (2017).

  3. Kunishima N., Kurihara O., Kim E., Ishikawa T., Nakano T., Fukutsu K., Tani K., Furuyama K., Hashimoto S., Hachiya M., Naoi Y., Akashi M., Early intake of radiocesium by residents living near the TEPCO Fukushima Dai-ichi Nuclear Power Plant after the accident. Part 2: relationship between internal dose and evacuation behavior in individuals. Health Physics 112(6), 512-525 (2017).

  4. Ishikawa T., A review of studies on thyroid dose estimation after the Fukushima Accident. in: Yamashita S., Thomas G. (eds.), Thyroid Cancer and Nuclear Accidents: Long-term Aftereffects of Chernobyl and Fukushima, Elsevier, London, 135-143 (2017).

  5. Ishikawa T., Takahashi H., Yasumura S., Ohtsuru A., Sakai A., Ohira T., Sakata R., Ozasa K., Akahane K., Yonai S., Kurihara O., Kamiya K., Abe M., Representativeness of individual external doses estimated for one quarter of residents in the Fukushima Prefecture after the nuclear disaster: the Fukushima Health Management Survey. Journal of Radiological Protection 37(3), 584-605 (2017).

  6. Ishikawa T., Radiation doses and associated risk from the Fukushima Nuclear Accident: a review of recent publications. Asia Pacific Journal of Public Health 29(2S), 18S-28S (2017).

  7. Omori Y., Tokonami S., Sahoo S.K., Ishikawa T., Sorimachi A., Hosoda M., Kudo H., Pornnumpa C., Nair R.R.K., Jayalekshmi P.A., Sebastian P., Akiba S., Radiation dose due to radon and thoron progeny inhalation in high-level natural radiation areas of Kerala, India. Journal of Radiological Protection 37(1), 111-126 (2017).

2016
  1. Mishra S, Sahoo S.K, Bossew P, Sorimachi A, Tokonami S, Ishikawa T, Vertical migration of radio-caesium derived from the Fukushima Dai-ichi Nuclear Power Plant accident in undisturbed soils of grass land and forest. Journal of Geochemical Exploration 169, 163–186 (2016)

  2. Suzuki Sh, Suzuki Sa, Fukushima T, Midorikawa S, Shimura H, Matsuzuka T, Ishikawa T, Takahashi H, Ohtsuru A, Sakai A, H osoya M, Yasumura S, Nollet KE, Ohira T, Ohto H, Abe M, Kamiya K, Yamashita S, Comprehensive Survey Results of Childhood Thyroid Ultrasound Examinations in Fukushima in the First Four Years After the Fukushima Daiichi Nuclear Power Plant Accident. Thyroid 26(6), 843-851 (2016).

  3. Kim E, Kurihara O, Kunishima N, Momose T, Ishikawa T, Akashi M, Internal thyroid doses to Fukushima residents -estimation and issues remaining. Journal of Radiation Research 57(S1), i118-i126 (2016).

  4. Kamiya K, Ishikawa T, Yasumura S, Sakai A, Ohira T, Takahashi H, Ohtsuru A, Suzuki S, Hosoya M, Maeda M, Yabe H, Fujimori K, Yamashita S, Ohto H, Abe M, External and internal exposure to Fukushima residents. Radiation Protection Dosimetry 171(1), 7-13 (2016).

  5. Ohira T, Takahashi H, Yasumura S, Ohtsuru A, Midorikawa S, Suzuki S, Fukushima T, Shimura H, Ishikawa T, Sakai A, Yamashita S, Tanigawa K, Ohto H, Abe M, Suzuki S, Comparison of childhood thyroid cancer prevalence among 3 areas based on external radiation dose after the Fukushima Daiichi nuclear power plant accident. Medicine 95(35), e4472 (2016).

  6. Kim E, Kurihara O, Kunishima N, Nakano T, Tani K, Hachiya M, Momose T, Ishikawa T, Tokonami S, Hosoda M, Akashi M, Early intake of radiocesium by residents living near the TEPCO Fukushima Dai-ichi Nuclear Power Plant after the accident. Part 1: Internal doses based on whole-body measurements by NIRS. Health Physics 111(5), 451-464 (2016).

  7. Kato T, Janik M, Kanda R, Ishikawa T, Kawase M, Kawamoto T, Measurement of radon in air using a radon-Po218 calibration curve determined by an absorptive non-volatile liquid scintillator. Radiation Measurements 95, 25-30 (2016).

  8. Omori Y., Prasad G., Sorimachi A., Sahoo S.K., Ishikawa T., Vidya Sagar D., Ramola R.C., Tokonami S., Long-term measurements of residential radon, thoron, and thoron progeny concentrations around the Chhatrapur placer deposit, a high background radiation area in Odisha, India. Journal of Environmental Radioactivity 162-163, 371-378 (2016).

  9. Ishikawa T., Yasumura S., Ohtsuru A., Sakai A., Akahane K., Yonai S., Sakata R., Ozasa K., Hayashi M., Ohira T., Kamiya K., Abe M., An influential factor for external radiation dose estimation for residents after the Fukushima Daiichi Nuclear Power Plant accident-time spent outdoors for residents in Iitate Village. Journal of Radiological Protection 36(2), 255-268 (2016).

  10. Abe Y., Miura T., Yoshida M.A., Ujiie R., Kurosu Y., Kato N., Katafuchi A., Tsuyama N., Kawamura F., Ohba T., Inamasu T., Shishido F., Noji H., Ogawa K., Yokouchi H., Kanazawa K., Ishida T., Muto S., Ohsugi J., Suzuki H., Ishikawa T., Kamiya K., Sakai A., Analysis of chromosone translocation frequency after a single CT scan in adults. Journal of Radiation Research 57(3), 220-226 (2016).

  11. Sahoo S.K., Kierepko R., Sorimachi A., Omori Y., Ishikawa T., Tokonami S., Prasad G., Gusain G.S., Ramola R.C., Natural Radioactivity level and elemental comparison of soil samples from a high background radiation area on eastern coast of India (Odisha). Radiation Protection Dosimetry 171(2), 172-178 (2016).

  12. Omori Y., Wakamatsu H., Sorimachi A., Ishikawa T., Radiation survey on Fukushima Medical University premises about four years after the Fukushima nuclear disaster. Fukushima Journal of Medical Science 62(1), 1-17 (2016).

  13. Hosoda M., Tokonami S., Omori Y., Ishikawa T., Iwaoka K., A comparison of the dose from natural radionuclides and artificial radionuclides after the Fukushima nucear accident. Journal of Radiation Research 57(4), 422-430 (2016).

  14. Hosoda M., Ishikawa T., Yasuoka Y., Sahoo S.K., Katoh S., Ogawa M., Ogashiwa S., Iwaoka K., Tokonami S., Estimation of external and internal doses resulting from the use of artificial radon spa sources. Radiation Environment and Medicine 5(1), 46-52 (2016)

  15. Sorimachi A., Janik M., Tokonami S., Ishikawa T., Ai intercomparison done at NIRS, Japan on continous monitors for measuring 220Rn concentration. Applied Radiation and Isotopes 107, 145-151 (2016).

  16. 石川徹夫, 宮崎 真, 福島における外部被ばく個人線量評価とその意義, Isotope News 741, 54-58 (2016).

2015
  1. Shiroma Y, Hosoda M, Ishikawa T, Sahoo SK, Tokonami S, Furukawa M, Estimation of radon emanation coefficient for representative soils in Okinawa, Japan. Radiation Protection Dosimetry 167(1-3), 147-150 (2015).

  2. Ćurguz Z., Stojanovska Z., Žunić Z.S., Kolarž P., Ishikawa T., Omori Y., Mishra R., Sapra B.K., Vaupotič J., Ujič P., Bossew P., Long-term measurements of radon, thoron and their airborne progeny in 25 schools in Republic of Srpska. Journal of Environmental Radioactivity 148, 163-169 (2015).

  3. Inamasu T., Schonfeld S.J., Abe M., Bidstrup P.E., Deltour I., Ishida T., Ishikawa T., Kesminiene A., Ohira T., Ohto H., Suzuki S., Thierry-Chef I., Yabe H., Yasumura S., Schuz J., Yamashita S., Meeting report: suggestions for studies on future health risks following the Fukushima accident. Environmental Health 14, 26 (2015).

  4. Terashima S., Abe A., Kasai Y., Kawamura T., Kitaya T., Kubo K., Sakata S., Sugisawa H., Narita M., Hattori M., Masuda D., Iwaoka K., Hosoda M., Ishikawa T., Tokonami S., A comparison study of commercially available survey meters for measurement of gamma-rays. Radiation Emergency Medicine 4(2), 29-34 (2015).

  5. Abe Y., Miura T., Yoshida M.A., Ujiie R., Kurosu Y., Kato N., Katafuchi A., Tsuyama N., Ohba T., Inamasu T., Shishido F., Noji H., Ogawa K., Yokouchi H., Kanazawa K., Ishida T., Muto S., Ohsugi J., Suzuki H., Ishikawa T., Kamiya K., Sakai A., Increase in dicentric chromosome formation after a single CT scan in adults. Scientific Reports 5, 13882 (2015).

  6. Hasegawa A., Tanigawa K., Ohtsuru A., Yabe H., Maeda M., Shigemura J., Ohira T., Tominaga T., Akashi M., Hirohashi N., Ishikawa T., Kamiya K., Yamashita S., Chhem R.K., Health effects of radiation and other health problems in the aftermath of nuclear accident, with an emphasis on Fukushima. The Lancet 386(9992), 479-488 (2015).

  7. Tan Y., Ishikawa T., Janik M., Tokonami S., Hosoda M., Sorimachi A., Kearfott K., Novel method for estimation of the indoor-to-outdoor airborne radioactivity ratio following the Fukushima Daiichi Nuclear Power Plant accident. Science of the Total Environment 536, 25-30 (2015).

  8. 林 正幸, 安村誠司, 小橋 元, 赤羽恵一, 米内俊祐, 大津留 晶, 坂井 晃, 坂田 律, 小笹晃太郎, 石川徹夫, 神谷研二, 阿部正文, 「福島県県民健康調査」における被ばく線量推計に関する研究 ―簡易版問診票の妥当性について―, 福島医学雑誌 65(4), 149-161 (2015).

  9. Ishikawa T., Yasumura S., Ozasa K., Kobashi G., Yasuda H., Miyazaki M., Akahane K., Yonai S., Ohtsuru A., Sakai A., Sakata R., Kamiya K., Abe M., The Fukushima Health Management Survey: estimation of external doses to residents in Fukushima Prefecture, Scientific Reports 5, 12712 (2015).

  10. Omori Y., Tokonami S., Ishikawa T., Sahoo S.K., Akata N., Sorimachi A., Hosoda M., Pornnumpa C., Wanabongse P., Kudo H., Hu Y.-J., Ao Y.-X., Li X.-L., Li K., Fu Y.-H., Sun Q.-F., Akiba S., A pilot study for dose evaluation in high-level natural radiation areas of Yangjiang, China, Journal of Radioanalytical and Nuclear Chemistry 306(1), 317-323 (2015).

  11. Mori Y., Omori Y., Yoshimura H., Maeda A., Yamamoto M., Nishinaka T., Ishikawa T., Wakabayashi A., Yasuoka Y., Measuring radon in high humidity air using anhydrous calcium sulfate and an activated charcoal detector. Journal of Hot Spring Sciences 64(4), 402-408 (2015).

  12. Iwaoka K., Hosoda M., Suwankot N., Omori Y., Ishikawa T., Yonehara H., Tokonami S., Natural radioactivity and radon exhalation rates in man-made tiles used as building materials in Japan. Radiation Protection Dosimetry 167(1-3), 135-138 (2015).

  13. Kudo H., Tokonami S., Omori Y., Ishikawa T., Iwaoka K., Sahoo S.K., Akata N., Hosoda M., Wanabongse P., Pornnumpa C., Sun Q., Li X., Akiba S., Comparative dosimetry for radon and thoron in high background radiation areas in China. Radiation Protection Dosimetry 167(1-3), 155-159 (2015).

  14. Sorimachi A., Tokonami S., Kranrod C., Ishikawa T., Preliminary experiments of passive detector for measuring indoor 220Rn progeny concentrations using an aerosol chamber. Health Physics 108(6), 597–606 (2015).

  15. Mishra S., Arae H., Sorimachi A., Hosoda M., Tokonami S., Ishikawa T., Sahoo S.K., Distribution and retention of Cs radioisotopes in soil affected by Fukushima nuclear plant accident. Journal of Soils and Sediments 15(2), 374–380 (2015).

  16. Hayashi K., Yasuoka Y., Nagahama H., Muto J., Ishikawa T., Omori Y., Suzuki T., Homma Y., Mukai T., Normal seasonal variations for atmospheric radon concentration: a sinusoidal model. Journal of Environmental Radioactivity 139, 149–153 (2015).

  17. Hosoda M., Tokonami S., Omori Y., Sahoo S.K., Akiba S., Sorimachi A., Ishikawa T., Nair R.R., Jayalekshmi P.A., Sebastian P., Iwaoka K., Akata N, Kudo H., Estimation of External Dose by Car-Borne Survey in Kerala, India. PloS ONE 10(4), e0124433. doi:10.1371/journal.pone.0124433 (2015).

  18. Shiroma Y., Hosoda M., Ishikawa T., Sahoo S.K., Tokonami S., Furukawa M., Characteristics of the environmental radon and thoron in Minamidaito-jima, a comparatively high background radiation island in Japan, Radiation Emergency Medicine 4(1), 27–33 (2015).

  19. Mishra S., Sahoo S.K., Arae H., Sorimachi A., Hosoda M., Tokonami S., Ishikawa T., Variability of radiocesium inventory in Fukushima soil cores from one site measured at different times. Radiation Protection Dosimetry 167(1-3), 344-347 (2015).

2014
  1. 神谷研二, 稲葉俊哉, 安村誠司, 山下俊一, 石川徹夫, 大津留晶, 坂井晃, 鈴木眞一, 細矢光亮, 矢部博興, 藤森敬也, 阿部正文, 福島原発事故による被ばく線量の概要とリスクコミュニケーション. 長崎医学会雑誌 89, 202-205 (2014).

  2. Ishikawa, T. Progress in estimation of dose due to the Fukushima Daiichi Nuclear Power Plant accident. Japanese Journal of Health Physics 49, 157–160 (2014).

  3. Ishikawa, T. A brief review of dose estimation studies conducted after the Fukushima Dai-ichi Nuclear Power Plant accident. Radiation Emergency Medicine 3, 21–27 (2014).

  4. Sorimachi A., Ishikawa T., Tokonami S., Performance tests of humidity control system in the 220Rn chamber. Radiation Emergency Medicine 3(2), 24–30 (2014).

  5. Sorimachi A., Ishikawa T., Tokonami S., Development of an aerosol chamber for calibration of 220Rn progeny detectors. Review of Scientific Instruments 85, 095104-1–095104-7 (2014).

  6. Kavasi N., Vigh T., Nemeth C., Ishikawa T., Omori Y., Janik M., Yonehara H., In situ comparison of passive radon-thoron discriminative monitors at subsurface workplaces in Hungary. Review of Scientific Instruments 85, 022002 (2014).

  7. Janik M., Ishikawa T., Omori Y., Kavasi N.: Radon and thoron intercomparison experiments for integrated monitors at NIRS, Japan. Review of Scientific Instruments 85, 022001 (2014).

  8. Ishikawa T., Sorimachi A., Arae H., Sahoo S.K., Janik M., Hosoda M, Tokonami S., Simultaneous sampling of indoor and outdoor airborne radioactivity after the Fukushima Daiichi Nuclear Power Plant accident. Environmental Science and Technology 48(4), 2430–2435 (2014).

  9. Gulan L., Zunic Z.S., Milic G., Ishikawa T., Omori Y., Vuckovic B., Nikezic D., Krstic D., Bossew P., First step of indoor thoron mapping of Kosovo and Metohija. Radiation Protection Dosimetry 162(1-2), 157–162 (2014).

  10. Mishra R., Zunic Z.S., Venoso G., Bochicchio F., Stojanovska Z., Carpentieri C., Prajith R., Sapra B.K., Mayya Y.S., Ishikawa T., Omori Y., Veselinovic N., Tollefsen T., Ujić P., Bossew P.: An evaluation of thoron (and radon) equilibrium factor close to walls based on long-term measurements in dwellings. Radiation Protection Dosimetry 160, 164–168 (2014).

  11. Yasuoka Y., Mori Y., Murakami K., Kobayashi Y., Ohnuma S., Takizawa H., Ishikawa T., Mukai T., Experimental demonstration with an acceptable range of radon leak for measurement of radon in water by a liquid scintillation counter using larger than usual samples. Radiation Emergency Medicine 3, 39–42 (2014).

  12. Tajika Y., Yasuoka Y., Omori Y., Sorimachi A., Ishikawa T., Mori Y., Mukai T., Effect of desiccant on the measurement of radon concentration in air. Japanese Journal of Health Physics 49, 190–193 (2014).

2013
  1. Nalaka D.S., Prasad M., Nimalsiri T.B., Suriyaarchchi N.B., Iimoto T., Ishikawa T., Omori Y., Dissanayake C.B., 2013, Measuring radon and thoron levels in Sri Lanka, Advanced Materials Research, 718-720, 721-724.

  2. Janik M., Tokonami S., Kranrod C., Sorimachi A., Ishikawa T., Hosoda M., McLaughlin J., Chang B.-U., Kim Y.-J., Comparative analysis of radon, thoron and thoron progeny concentration measurements. Jourmal of Radiation Research 54, 597–610 (2013).

  3. Sahoo S.K., Hosoda M., Prasad G., Takahashi H., Sorimachi A., Ishikawa T., Tokonami S., Uchida S., Naturally occurring radionuclides and rare earth elements in weathered Japanese soil samples. Acta Geophysica 61(4), 876–885 (2013).

  4. Hosoda M., Tokonami S., Tazoe H., Sorimachi A., Monzen S., Osanai M., Akata N., Kakiuchi H., Omori Y., Ishikawa T., Sahoo S.K., Kovács T., Yamada M., Nakata A., Yoshida M., Yoshino H., Mariya Y., Kashiwakura I., Activity concentrations of environmental samples collected in Fukushima Prefecture immediately after the Fukushima nuclear accident. Scientific Reports 3, 2283; DOI: 10.1038/srep02283 (2013).

  5. Yoshino H., Obara H.,Maeda T., Yamada A., Watanabe K., Hosoda M., Sorimachi A., Ishikawa T., Tokonami S., An investigation of gamma-ray dose rate in the central area of Hirosaki City, Japan. Radiation Emergency Medicine 2, 72–76 (2013).

  6. Hosoda M., Tokonami S., Akiba S., Kurihara O., Sorimachi A., Ishikawa T., Momose T., Nakano T., Mariya Y., Kashiwakura I., Estimation of internal exposure of the thyroid to 131I on the basis of 134C accumulated in the body among evacuees of the Fukushima Daiichi Nuclear Power Station accident. Environment International 61, 73–76 (2013).

  7. Iwaoka K., Hosoda M., Tabe H., Ishikawa T., Tokonami S., Yonehara H, Activity concentration of natural radionuclides and radon and thoron exhalation rates in rocks used as decorative wall coverings in Japan. Health Physics 104(1), 41-50 (2013).

  8. Iwaoka K., Tabe H., Ishikawa T., Tokonami S., Yonehara H., Occupational exposure to Austrian rocks used as radon spa sources in Japan. Radiation Emergency Medicine, 2(2), 23-26 (2013).

  9. Iwaoka K., Tokonami S., Ishikawa T., Yonehara H.: Mitigation effects of radon decay products by air cleaner. Journal of Radioanalytical and Nuclear Chemistry 295(1), 639-642 (2013).

  10. Mori Y., Murata S., Yoshimura H., Maeda A., Sawada Y., Shimura K., Yamaguchi T., Tajika Y., Ishikawa T., Yasuoka Y., Determination of Radon Concentration in Air Using a Liquid Scintillation Counter and an Activated Charcoal Detector. Journal of Hot Spring Science 62, 306-317 (2013).

  11. Tajika Y., Yasuoka Y., Nagahama H., Suzuki T., Homma Y., Ishikawa T., Tokonami S., Mukai T., Janik M., Sorimachi A., Hosoda M., Radon concentration of outdoor air: measured by an ionization chamber for radioisotope monitoring system at radioisotope institute. Journal of Radioanalytical & Nuclear Chemistry 295(3), 1709–1714 (2013).

  12. 楢崎幸範、竹村俊彦、天野光、石川徹夫、藤高和信:福岡県における福島第一原子力発電所事故初期の放射線影響評価、Radioisotopes, 62, 847–855 (2013).

2012
  1. Yasuoka Y., Kawada Y., Omori Y., Nagahama H., Ishikawa T., Tokonami S., Hosoda M., Hashimoto T., Shinogi M., Anomalous change in atmospheric radon concentration sourced from broad crustal deformation: A case study of the 1995 Kobe earthquake. Applied Geochemistry, 27(4), 825-830 (2012).

  2. Vaupotic J., Bezek M., Kavasi N., Ishikawa T., Yonehara H., Tokonami S., Radon and thoron doses in kindergartens and elementary schools. Radiation Protection Dosimetry 152(1-3), 247-252 (2012).

  3. Gabor S., Somlai J., Ishikawa T., Omori Y., Mishra R., Sapra B.K., Mayya Y.S., Tokonami S., Csordas A., Kovacs T., Preliminary results from an indoor radon thoron survey in Hungary. Radiation Protection Dosimetry 152(1-3), 243-246 (2012).

  4. Mishra S., Arae H., Zamostyan P.V., Ishikawa T., Yonehara H., Sahoo S.K.: Sorption-desorption characteristics of uranium, cesium and strontium in typical podzol soils from Ukraine. Radiation Protection Dosimetry 152(1-3), 238-242 (2012).

  5. Inoue K., Sugino M., Hosoda M., Shimizu H., Akimoto A., Hori K., Ishikawa T., Sahoo S.K., Tokonami S., Narita H., Fukushi M., Environmental radiation at Izu-Oshima island after the Fukushima Daiichi Nuclear Power Plant accident. Radiation Protection Dosimetry, 152(1-3), 234-237 (2012).

  6. Gulan L., Milic G., Bossew P., Omori Y., Ishikawa T., Mishra R., Mayya Y.S., Stojanovska Z., Nikezic D., Vuckovic B., Zunic Z.S., Field experience on indoor radon, thoron and their progenies with solid-state detectors in a survey of Kosovo and Metohija (Balkan region). Radiation Protection Dosimetry 152(1-3), 189-197 (2012).

  7. Janik M., Loskiewicz K., Tokonami S., Kozak K., Mazur J., Ishikawa T., Determination of the minimum measurement time for estimating long term mean radon concentration, Radiation Protection Dosimetry 152(1-3), 168-173 (2012).

  8. Kavasi N., Janik M., Prasad G., Omori Y., Ishikawa T., Yonehara H.: Thoron experimental room at the National Institute of Radiological Sciences (NIRS), Japan. Radiation Protection Dosimetry 152(1-3), 150-153 (2012).

  9. Kranrod C., Chanyotha S., Chankow N., Tokonami S., Ishikawa T., Measurement of radon and thoron progeny size distributions and dose assessments at the mineral treatment industry in Thailand. Journal of Radioanalytical and Nuclear Chemistry 296, 625–630 (2012).

  10. Sorimachi A., Ishikawa T., Tokonami S., Chittaporn P., Harley N.H., An intercomparison for NIRS and NYU passive thoron gas detectors at NYU. Health Physics 102, 419–424 (2012).

  11. Sorimachi A., Ishikawa T., Tokonami S., Performance test for radon measuring instruments using radon chamber at PTB. Applied Radiation and Isotopes 70, 994–998 (2012).

  12. Sorimachi A., Tokonami S., Omori Y., Ishikawa T., Performance test of passive radon-thoron discriminative detectors on environmental parameters. Radiation Measurements 47(6), 438–442 (2012).

  13. Prasad G., Ishikawa T., Hosoda M., Sorimachi A., Sahoo S.K, Kavasi N., TokonamiS., Sugino M., Uchida S., Seasonal and diurnal variations of radon/thoron exhalation rate in Kanto-loam area in Japan. Journal of Radioanalytical & Nuclear Chemistry 292, 1385–1390 (2012).

  14. Shiroma Y., Kina S., Fujitani T., Hosoda M., Sorimachi A., Ishikawa T., Sahoo S.K., Tokonami S., Furukawa M., Characteristics of radon and thoron exhalation rates in Okinawa, subtropical region of Japan. Radiation Protection Dosimetry 152, 184–188 (2012).

  15. Omori Y., Janik M., Sorimachi A., Ishikawa T., Tokonami S., Ventilation property of a passive-type radon-thoron discriminative detector. Radiation Protection Dosimetry 152, 140–145 (2012).

  16. Prasad G., Ishikawa T., Hosoda M., Sahoo S.K., Kavasi N., Sorimachi A., Tokonami S., Uchida S., Measurement of radon/thoron exhalation rates and gamma ray dose rate in granite areas in Japan. Radiation Protection Dosimetry 152, 130–134 (2012).

  17. Ramola R.C., Gusain G.S., Rautela B.S., Sagar D.V., Prasad G., Sahoo S.K., Ishikawa T., Omori Y., Janik M., Sorimachi A., Tokonami S., Levels of thoron and its progeny in high background radiation area of southeastern coast of Odisha, India. Radiation Protection Dosimetry 152, 62–65 (2012).

  18. Gusain G.S., Rautela B.S., Sahoo S.K., Ishikawa T., Prasad G., Omori Y., Sorimachi A., Tokonami S., Ramola R.C., Distribution of terrestrial gamma radiation dose rate in the eastern coastal area of Odisha, India. Radiation Protection Dosimetry 152, 42–45 (2012).

  19. Prasad G., Ishikawa T., Hosoda M., Sorimachi A., Janik M., Sahoo S.K, Tokonami S., Uchida S., Estimation of radon diffusion coefficients in soil using an updated experimental system. Review of Scientific Instruments 83, 093503–093503-6 (2012).

2011
  1. Kavasi N., Tamas V., Kovacs T., Vaupotic J., Jobbagy V., Ishikawa T., Yonehara H., Dose estimation and radon action level problems due to nanosize radon progeny aerosols in underground manganese ore mine. Journal of Environmental Radioactivity 102, 806-812 (2011).

  2. Kavasi N., Kobayashi Y., Kovacs T., Somlai J., Jobbagy V., Nagy K., Deak E., Berhes I., Bender T., Ishikawa T., Tokonami S., Vaupotic J., Yoshinaga S., Yonehara H., Effect of radon measurement methods on dose estimation. Radiation Protection Dosimetry 145(2-3), 224-232 (2011).

  3. Sahoo S.K., Parami V.K., Quirit L.L., Yonehara H., Ishikawa T., Tokonami S., Determination of uranium concentrations and its activity ratios in coal and fly ash from Philippine coal-fired thermal power plants using ICP-MS and TIMS. Radiochimica Acta 1(1), 257-261 (2011).

  4. Kavasi N., Kovacs T., Somlai J., Jobbagy V., Nagy K., Deak E., Berhes I., Bender T., Ishikawa T., Tokonami S., Comparison of urinary excretion of radon from the human body before and after radon bath therapy. Radiation Protection Dosimetry 146(1-3), 27-30 (2011).

  5. Hosoda M., Ishikawa T., Sorimachi A., Tokonami S., Uchida S., Development and application of a continuous measurement system for radon exhalation rate. Review of Scientific Instruments 82, 015101 (2011).

  6. Hassan N.M., Ishikawa T., Hosoda M., Iwaoka K., Sorimachi A., Sahoo S.K., Janik M., Kranrod C., Yonehara H., Fukushi M., Tokonami S., The effect of water content on the radon emanation coefficient for some building materials used in Japan. Radiation Measurements 46(2), 232–237 (2011).

  7. Sahoo S.K., Hosoda M., Kamagata S., Sorimachi A., Ishikawa T., Tokonami S., Uchida S., Thorium, uranium and rare earth elements concentration in weathered Japanese soil samples. Progress in NUCLEAR SCIENCE and TECHNOLOGY, 1, 416–419 (2011).

  8. Hassan N.M., Hosoda M., Iwaoka K., Sorimachi A., Janik M., Kranrod C., Sahoo S.K., Ishikawa T., Yonehara H., Fukushi M., Tokonami S., Simultaneous measurement of radon and thoron released from building materials used in Japan. Progress in NUCLEAR SCIENCE and TECHNOLOGY, 1, 404–407 (2011).

  9. Ishikawa T., Hosoda M., Sorimachi A., Tokonami S., Katho S., Ogashiwa S., Radiological characterization of commercially available radon spa sources. Journal of Radioanalytical & Nuclear Chemistry 287, 709–713 (2011).

2010
  1. 細田正洋, 床次眞司, 石川徹夫, Sahoo S.K., 反町篤行, Miroslaw J., Kávási N., 内田滋夫, 環境移行パラメータ推定支援ツールを用いたラドン散逸率の評価の検討. Radioisotopes 59, 423–428 (2010).

  2. Zunic Z.S., Celikovic I., Tokonami S., Ishikawa T., Ujic P., Onischenko A., Zhukovsky M., Milic G., Jakupi B., Cuknic O., Veselinovic N., Fujimoto K., Sahoo S.K., Yarmoshenko I., Collaborative investigations on thoron and radon in some rural communities of Balkans. Radiation Protection Dosimetry 141(4), 346-350 (2010).

  3. Milic G., Jakupi B., Tokonami S., Trajkovic R., Ishikawa T., Celikovic I., Ujic P., Cuknic O., Yarmoshenko I., Kosanovic K., Adrovic F., Sahoo S.K., Veselinovic N., Zunic Z.S., The concentrations and exposure doses of radon and thoron in residences of the rural areas of Kosovo and Metohija. Radiation Measurements 45, 118-121 (2010).

  4. Hassan N.M., Ishikawa T., Hosoda M., Sorimachi A., Tokonami S., Fukushi M., Sahoo S.K., Assessment of the natural radioactivity using two techniques for the measurement of radionuclide concentration in building materials used in Japan. Journal of Radioanalytical & Nuclear Chemistry 283, 15–21 (2010).

  5. Shiroma Y., Isa N., Hosoda M., Sorimachi A., Ishikawa T., Tokonami S., Furukawa M., In situ measurements on thoron exhalation rate in Okinawa, Japan. Radiation Protection Dosimetry 141, 457–461 (2010).

  6. Janik M., Tokonami S., Kranrod C., Sorimachi A., Ishikawa T., Hassan N.M., International intercomparisons of integrating radon/thoron detectors with the NIRS radon/thoron chambers. Radiation Protection Dosimetry 141, 436–439 (2010).

  7. Kávási N., Vigh T., Sorimachi A., Ishikawa T., Tokonami S., Hosoda M., Effective dose of miners due to natural radioactivity in a Manganese mine in Hungary. Radiation Protection Dosimetry 141, 432–435 (2010).

  8. Kranrod C., Ishikawa T., Tokonami S., Sorimachi A., Chanyotha S., Chankow N., Comparative dosimetry of radon and thoron. Radiation Protection Dosimetry 141, 424–427 (2010).

  9. Hosoda M., Tokonami S., Sorimachi A., Ishikawa T., Sahoo S.K., Furukawa M., Shiroma Y., Yasuoka Y., Janik M., Kávási N., Uchida S., Shimo M., Influence of soil environmental parameters on thoron exhalation rate. Radiation Protection Dosimetry 141, 420–423 (2010).

  10. Sahoo S.K., Ishikawa T., Tokonami S., Sorimachi A., Kranrod C., Janik M., Hosoda Hassan N.M., Chanyotha S., Parami V., Yonehara H., Ramola R.C., A comparative study of thorium activity in NORM and high background radiation area. Radiation Protection Dosimetry 141, 416–419 (2010).

  11. Yasuoka Y., Sorimachi A., Ishikawa T., Hosoda M., Tokonami S., Fukuhori N., Janik M., Separately measuring radon and thoron concentrations exhaled from soil using AlphaGUARD and liquid scintillation counter methods. Radiation Protection Dosimetry 141, 412–415 (2010).

  12. Ramola R.C., Prasad G., Gusain G.S., Rautela B.S., Choubey V.M., Sagar D.V., Tokonami S., Sorimachi A., Sahoo S.K., Janik M., Ishikawa T., Preliminary indoor thoron measurements in high radiation background area of southeastern coastal Orissa, India. Radiation Protection Dosimetry 141, 379–382 (2010).

  13. Sorimachi A., Ishikawa T., Janik M., Tokonami S., Quality assurance and quality control for thoron measurement at NIRS. Radiation Protection Dosimetry 141, 367–370 (2010).

学会活動[国際]

2018
  1. Ohba T, Hasegawa A, Ishikawa T, Suzuki G., The proportion of evacuees with multiple plume exposures judging from the random sampled evacuation behavioral questionnaire records of less than 19 years old subjects after the Fukushima Daiichi nuclear power station accident. 64th Annual Meeting of the Radiation Research Society and Conference on Radiation & Health. Chicago, USA. (2018.9).

  2. Furukawa M, Omori Y, Shingaki R, Masuda N, Obata M, Tamakuma Y, Suzuki T, Nakasone S, Ishimine A, Hosoda M, Akata N, Tokonami S., High indoor radon concentration observed in Yomitan-son, Okinawa prefecture, southwestern part of Japan. 9th International Conference on High Level Environmental Radiation Areas – For Understanding Chronic Low-Dose-Rate Radiation Exposure Health Effects and Social Impacts. Hirosaki, Japan. (2018.9). (ポスター発表)

  3. Sorimachi A, Tokonami S, Omori Y, Janik M, Iwaoka K, Ishikawa T, Sun Q., Characteristics of indoor radon and thoron in cave dwellings in Gansu Province, China. 9th International Conference on High Level Environmental Radiation Areas – For Understanding Chronic Low-Dose-Rate Radiation Exposure Health Effects and Social Impacts. Hirosaki, Japan. (2018.9). (ポスター発表)

  4. Sahoo S.K, Tokonami S, Ishikawa T, Sorimachi A, Omori Y, Hosoda M, Ramola R.C., Naturally occurring radionuclides and selected rare earth elements in air particulates of an Indian high radiation background area. 9th International Conference on High Level Environmental Radiation Areas – For Understanding Chronic Low-Dose-Rate Radiation Exposure Health Effects and Social Impacts. Hirosaki, Japan. (2018.9). (ポスター発表)

  5. Omori Y, Inoue S, Otsuka T, Nagamatsu Y, Sorimachi A, Ishikawa T., Reduction of ambient gamma dose rate from radiocesium due to snow cover. 9th International Conference on High Level Environmental Radiation Areas – For Understanding Chronic Low-Dose-Rate Radiation Exposure Health Effects and Social Impacts. Hirosaki, Japan. (2018.9). (ポスター発表)

  6. Omori Y, Sorimachi A, Ishikawa T., Sturcture shieldng for school buildings against fallout gamma radiation from the Fukushima Dai-ichi Nuclear Power Plant accident. 5th Asian and Oceanic IRPA Regional Congress on Radiation Protection. Melbourne, Australia. (2018.5). (口頭発表)

2016
  1. Kurihara O, Kim E, Kunishima N, Tani K, Ishikawa T, Furuyama K, Hashimoto S, Akashi M, Development of a tool for calculating early internal doses in the Fukushima Daiichi nuclear power plant accident based on atmospheric dispersion simulation. 13th International Conference on Radiation Shielding – Radiation Protection & Shielding Division Topical Meeting 2016 of American Nuclear Society, Paris, France (2016.10).(口頭発表)

  2. Žunić Z.S., Stojanovska Z., Vaselinovic R., Mishra R., Sapra B.K., Ishikawa T., Omori Y., Ćurguz Z., Ramola R.C., Indoor radon, thoron and their progeny concentrations in high thoron rural Serbia environments. 8th International Conference on Protection against Radon at Home and Work, Prague, Czech Republic (2016.9.).(ポスター発表)

2015
  1. Ćurguz Z, Stojanovska Z, Žunić Z.S, Kolarž P, Ishikawa T, Omori Y, Mishra R, Sapra B.K, Vaupotič J, Ujič P, Bossew P, Long-term measurements of radon, thoron and their airborne progeny in 25 schools in Republic of Srpska. 2nd International Conference “Radon in the Environment 2015”,Krakow, Poland (2015.5). (口頭発表)

  2. Sorimachi A, Haraguchi M, Shimada I, Sakamoto K, Ishikawa T, Tokonami S, Dry deposition flux measurements of nanometer-size particles using the relaxed eddy accumulation technique. The 9th Asian Aerosol Conference, Kanazawa, Japan (2015.6).(口頭発表)

  3. Ishikawa T, Difficulties in dose estimation for residents in Fukushima Health Management Survey and other surveys. Train the Trainers Workshop on Medical Physics Support for Nuclear or Radiological Emergencies, Fukushima, Japan (2015.6).(口頭発表)

  4. Sorimachi A, Haraguchi M, Shimada I, Sakamoto K, Ishikawa T, Tokonami S, Dry deposition flux measurements of nanometer-size particles using the relaxed eddy accumulation technique. 2015 Asian Aerosol Conference (AAC 2015), Kanazawa, Japan (2015.6).(ポスター発表)

  5. 石川徹夫, 宮崎真, 安村誠司, 大津留晶, 坂井晃, 赤羽恵一, 米内俊祐, 大平哲也, 神谷研二, 阿部正文, 事故後初期と復興期における外部被ばく線量の評価. 福島の復興に向けての放射線対策に関するこれからの課題, 福島県福島市 (2015.5).(口頭発表)

  6. Kurihara O, Kim E, Tani K, Ishikawa T, Kunishima N, Yajima K, Fujibayashi Y, Akashi M, Current status of the reconstruction of early internal doses to Fukushima residents after the nuclear disaster. 15th International Congress of Radiation Research (ICRR 2015), Satellite Workshop, Kyoto, Japan (2015.5).(口頭発表)

2014
  1. Ćurguz Z, Stojanovska Z, Ujić P, Nađđerđ L, Tollefsen T, Vaupotic J, Kolarž P, Bochicchio F, Carpentieri C, Venoso G, Mishra R, Prajith R, Sapra B.K, Mayya Y.S, Ishikawa T, Omori Y, Nikezić D, Bossew P, Žunić Z.S, Assessment of nuclear track detectors exposure in schools of Banja Luka city, Republic of Srpska. Second East European Radon Symposium, University of Nis, Nis, Serbia (2014.5). (ポスター発表)

  2. Ćurguz Z, Stojanovska Z, Ishikawa T, Omori Y, Mishra R, Prajith R, Sapra B.K, Mayya Y.S, Bochicchio F, Carpentieri C, Tollefsen T, Jovanovič P, Venoso G, Kolarž P, Bossew P, Žunić Z.S, Variability of radon and thoron equilibrium factors close to the wall in indoor environments of Banja Luka city (Republika Srpska). Second East European Radon Symposium, University of Nis, Nis, Serbia (2014.5). (ポスター発表)

  3. Omori Y, Shimo M, Janik M, Ishikawa T, Yonehara H, Infiltration of thoron into a passive diffusion radon monitor in natural environment. Second East European Radon Symposium, University of Nis, Nis, Serbia (2014.5). (ポスター発表)

  4. Omori Y, Shimo M, Janik M, Tabe H, Ishikawa T, Yonehara H, Covariance structure analysis for outdoor, indoor and underfloor radon concentration. 12th International Workshop on the Geological Aspects of Radon Risk Mapping, Hotel DAP, Prague, Czech Republic (2014.9). (ポスター発表)

  5. Omori Y, Shimo M, Janik M, Tabe H, Ishikawa T, Yonehara H, Measurement of indoor, outdoor and underfloor radon concentrations in a Japanese dwelling. The 9th International Symposium on Natural Radiation Environment, Hirosaki Aomori Japan (2014.9). (ポスター発表)

  6. Ishikawa T, A review of dose estimation studies conducted after the Fukushima accident. The 9th international symposium of Natural Radiation Environment (NRE9), Aomori, Japan (2014.9).(口頭発表)

  7. Ishikawa T, Yasumura Y, Ohtsuru A, Sakai A, Ohira T, Kamiya K, Abe M, The Basic Survey: estimation of external doses to residents in Fukushima Prefecture. The 3rd International Expert Symposium in Fukushima: Beyond radiation and health risk-Toward resilience and recovery, Fukushima, Japan (2014.9).(口頭発表)

  8. Ishikawa T, Yasumura S, Ohtsuru A, Sakai A, Kamiya K, Abe M, Basic survey: external dose estimation. International Workshop on Radiation and Thyroid Cancer, Tokyo, Japan (2014.2).(口頭発表)

2013
  1. Nakamura S, Hayashi K, Yasuoka Y, Nagahama H, Muto J, Omori Y, Ishikawa T, Suzuki T, Homma Y, Ihara H, Mukai T, Sinusoidal model for the annual variation of atmospheric radon concentration in Japan. The 2nd Workshop of Asia-Pacific Region Global Earthquake and Volcanic Eruption Risk Management, Sendai, Japan (2013.10).(ポスター発表)

  2. Ishikawa T, Dose estimation as a part of the Fukushima Health Management Survey. IARC-FMU joint workshop, Fukushima, Japan (2013.10).(口頭発表)

  3. Janik M, Ishikawa T, Yonehara H, RADIF- NIRS system for measurement of radon diffusion in membranes. 7th conference of protection against radon at home and at work, Prague, Czech Republic (2013.9).(ポスター発表)

  4. Zunic ZS, Stojanovskac Z, Carpentieri C, Venoso G, Bochicchio F, Ishikawa T, Omori Y, Veselinovic N, Bossew P, Prajitha R, Sapraa BK, Mayya YS, Tollefsen T, Mishra R, An evaluation of thoron (and radon) equilibrium factor close to walls based on long-term measurements in dwellings. 7th conference of protection against radon at home and at work, Prague, Czech Republic (2013.9).(口頭発表)

学会活動[国内]

2019
  1. 反町篤行, 大森康孝, 石川徹夫.屋内におけるエアロゾル粒子とラドン壊変生成物の粒径分布の関係.研究連携セミナー2019年度ポスター発表会.福島県福島市・福島県立医科大学(2019.12.17)(ポスター発表)

2018
  1. 石川徹夫, 福島原発事故による内部被ばくの概要. 保物セミナー2018「世界のエネルギー事情とこれからの保健物理」, 大阪府大阪市 (2018.11.16)

  2. 大葉隆, 長谷川有史, 石川徹夫, 鈴木元, 福島第一原発事故における19歳以下の行動パターンによる放射性物質の複数回の吸入によるばく露の可能性. 日本放射線影響学会第61回大会, 長崎県長崎市 (2018.11.9)

  3. 石川徹夫, 被ばく線量評価の最新状況. 日本放射線影響学会第61回大会, 長崎県長崎市 (2018.11.7)

  4. Abe Yu, Noji Hideyoshi, Sugai Misaki, Kurosu Yumiko, Tsuyama Naohiro, Yanai Aki, Ohba Takashi, Ishikawa Tetsuo, Miura Tomisato, Kamiya Kenji, Yoshida Mitsuaki, Sakai Akira,  Analysis of the number of chromosome aberrations induced by three consecutive CT examinations. 日本放射線影響学会第61回大会, 長崎県長崎市 (2018.11.7)

  5. 石川徹夫, 安村誠司, 赤羽恵一, 米内俊祐, 大津留晶, 坂井晃, 小笹晃太郎, 坂田律, 大平哲也, 神谷研二, 福島県「県民健康調査」における外部被ばく線量評価の最新状況. 日本保健物理学会第51回研究発表会, 北海道札幌市 (2018.6.28-29)

  6. 大森康孝・石川拓磨・反町篤行・石川徹夫,. 看護学部棟内の空間線量率分布. 医学研究科大学院研究発表会・サマーポスターセッション. 福島県福島市 (2018.7.23-28). (ポスター発表).

2017
  1. 石川徹夫, 福島事故後の内部被ばく線量評価の現状. 日本保健物理学会シンポジウム「福島事故後の内部被ばくの課題の解決に向けて -不溶性粒子と短半減期核種-」, 東京都文京区 (2018.3.19)

  2. 大津留晶, 緑川早苗, 大葉隆, 熊谷敦史, 長谷川有史, 石川徹夫, 福島県立医科大学医学部教育における放射線健康リスク科学教育の試み. 放射線健康リスク科学人材養成プログラム公開シンポジウム2018, 長崎県長崎市 (2018.2.2)

  3. 阿部悠, 菅井美咲, 黒須由美子, 津山尚宏, 柳亜希, 柳井祐佳里, 吉田光明, 大葉隆, 野地秀義, 石川徹夫, 神谷研二, 坂井晃, 継続的なCT検査による染色体異常形成数の累積性の検討. 日本放射線影響学会第60回大会, 千葉県千葉市 (2017.10.25-28)

  4. 石川徹夫, 高橋秀人, 安村誠司, 大津留晶, 坂井晃, 大平哲也, 坂田律, 小笹晃太郎, 赤羽恵一, 米内俊祐, 栗原治, 神谷研二, 福島県「県民健康調査」基本調査によって推定された個人外部被ばく線量の代表性に関する研究. 日本保健物理学会第50回研究発表会, 大分県大分市 (2017.6.28-30)

  5. 反町篤行, 福山南美, 大森康孝, 石川徹夫, 福島医大屋内におけるラドン調査. 日本保健物理学会第50回発表会, 大分県大分市 (2017.6.28-30).

  6. 反町篤行, 大森康孝, 石川徹夫, 福島市中学校における屋内外の空間線量率調査. 大分県大分市 (2017.6.28-30).

  7. 大森康孝, 反町篤行, 石川徹夫, 福島市における天然放射性核種由来の空間線量率―市立中学校における測定―. 日本保健物理学会第50回発表会, 大分県大分市 (2017.6.28-30).

  8. 大森康孝, 反町篤行, 石川徹夫, 線量低減係数の新たな評価方法と自然放射線および屋内の放射能汚染の影響. 日本保健物理学会第50回発表会, 大分県大分市 (2017.6.28-30)

2016
  1. 石川徹夫, 福島原発事故による内部被ばくー残された課題と内部被ばく影響評価委員会の活動ー. 日本保健物理学会シンポジウム「福島事故を内部被ばくから考える」, 東京都文京区 (2017.3)

  2. 反町篤行, 石川徹夫, 福島における内部被ばく評価の現状と課題. 日本保健物理学会第49回発表会, 青森県弘前市 (2016.7).(口頭発表)

  3. 石川徹夫, 福島県住民に関する線量評価. 日本放射線影響学会第59回大会, 広島県広島市 (2016.10). (口頭発表)

  4. 金ウンジュ, 栗原治, 國島直晃, 谷幸太郎, 百瀬琢磨, 石川徹夫, 明石真言, Early intake of radiocesium by residents living near the TEPCO Fukushima Dai-ichi Nuclear Power Plant after the accident. Part 1: Internal doses based on whole-body measurements by NIRS. 日本放射線影響学会第59回大会, 広島県広島市 (2016.10). (ポスター発表)

  5. 石川徹夫, ラドン等の測定の現状とリスクの考え方. 日本放射線影響学会第59回大会, 広島県広島市 (2016.10). (口頭発表)

  6. 反町篤行, Miroslaw Janik, 床次眞司, 石川徹夫, アクティブ型トロン測定器の比較実験. 日本保健物理学会第49回研究発表会, 青森 (2016.7). (口頭発表)

  7. 石川徹夫、佐藤達彦、反町篤行、松本雅紀、山口一郎、甲斐倫明, 内部被ばく影響評価委員会の活動概要. 日本保健物理学会第49回研究発表会, 青森 (2016.7). (口頭発表)

  8. 大森康孝, 井上晴太, 大塚哲也, 永松優一, 反町篤行, 石川徹夫, 積雪による空間線量率の変化. 日本保健物理学会第49回研究発表会, 青森県弘前市 (2016.6). (ポスター発表)

2015
  1. 反町篤行, 大森康孝, 石川徹夫, 土中ラドンガスの測定に関する研究. 日本保健物理学会第48回研究発表会, 東京都荒川区 (2015.7). (口頭発表)

  2. 大森康孝, 若松宏昌, 反町篤行, 石川徹夫, 医大敷地内における放射線量調査‐福島第一原子力発電所事故から4年後の状況‐. 医学研究科大学院研究発表会・サマーポスターセッション, 福島県福島市 (2015.7). (ポスター発表)

  3. 床次眞司, 細田正洋, 岩岡和輝, 工藤ひろみ, Chanis Pornnumpa, 石川徹夫, 反町篤行, 大森康孝, Sarata K. Sahoo, 赤田尚史, 秋葉澄伯, 高自然放射線地域(インド・中国)におけるラドン等の線量調査結果の概要. 日本保健物理学会第48回研究発表会, 東京都荒川区 (2015.7).(口頭発表)

  4. 大森康孝, 床次眞司, 秋葉澄伯, 石川徹夫, 反町篤行, S.K. Sahoo, 赤田尚史, 工藤ひろみ, 細田正洋, 岩岡和輝, C. Pornnumpa, P. Wanabongse, Y.-J. Hu, Y.-X. Ao, X.-L. Li, K. Li, Y.-H. Fu, Q.-F. Sun, 中国広東省陽江地域における空間線量率及び屋内ラドン・トロン・トロン子孫核種濃度に関する調査. 日本保健物理学会第48回研究発表会, 東京都荒川区 (2015.7).(ポスター発表)

  5. 床次眞司, 細田正洋, 大森康孝, Sarata K. Sahoo, 秋葉澄伯, 反町篤行, 石川徹夫, Raghu R. Nair, Padmavathy A. Jayalekshmi, Paul Sebastian, 岩岡和輝, 赤田尚史, 工藤ひろみ, インド・ケララにおける外部被ばく線量の評価. 日本保健物理学会第48回研究発表会, 東京都荒川区 (2015.7).(ポスター発表)

  6. 栗原治, 金ウンジュ, 國島直晃, 谷幸太郎, 矢島千秋, 石川徹夫, 藤林康久, 明石真言, 福島県住民の初期内部被ばく線量推計の現状と課題. 第56回大気環境学会年会, 東京都 (2015.9). (口頭発表)

  7. 石川徹夫, 安村誠司, 大津留晶, 坂井晃, 赤羽恵一, 米内俊祐, 大平哲也, 神谷研二, 阿部正文, 福島県「県民健康調査」における事故後初期の外部被ばく線量推計. 日本保健物理学会第48回研究発表会, 東京都 (2015.7). (口頭発表)

  8. 石川徹夫, 福島原発事故による被ばくのレベル. 第20回日本集団災害医学会総会・学術集会, 東京都立川市 (2015.2). (口頭発表)

  9. 石川徹夫, 福島県民の被ばく線量評価に関する現状. 第35回弘前大学生体応答科学研究セミナー, 青森県弘前市 (2015.2). (口頭発表)

2014
  1. 細田正洋, 床次眞司, 大森康孝, Sahoo S.K, 秋葉澄伯, 反町篤行, 石川徹夫, 岩岡和輝, 工藤ひろみ, Nair R.R, Jayalekshmi P, Sebastian P, 自動車走行サーベイによるインド・ケララ州における外部被ばく線量評価. 日本放射線影響学会第57回大会, 鹿児島県鹿児島市 (2014.10). (口頭発表)

  2. 反町篤行, 床次眞司, 大森康孝, 石川徹夫, トロン‐エアロゾルチャンバーを用いたパッシブ型トロン子孫核種濃度モニタに関する研究. 日本保健物理学会第47回研究発表会, 岡山県苫田郡鏡野町 (2014.6) (口頭発表)

  3. 大森康孝, 反町篤行, 石川徹夫,福島市立中学校における自然放射性核種に由来する空間線量率. 2014年度研究連携セミナーポスター発表会, 福島県福島市 (2014.12). (ポスター発表)

  4. 大森康孝, 反町篤行, 石川徹夫, 除染に伴う空間線量率の変化から見る建物の放射線遮蔽効果‐福島市の中学校の例-. 医学研究科大学院研究発表会・サマーポスターセッション,福島県福島市 (2014.7) (ポスター発表)

  5. 反町篤行, 大森康孝, 床次眞司, Sahoo SK, 秋葉澄伯, 細田正洋, 石川徹夫, Nair RR, Jayalekshmi P, インド・ケララ州におけるラドンとトロンによる内部被ばく線量評価. 日本放射線影響学会第57回大会, 鹿児島県鹿児島市 (2014.10.).(口頭発表)

  6. 石川徹夫, 安村誠司, 大津留晶, 坂井晃, 大平哲也, 神谷研二, 阿部正文, 基本調査による線量推計. 福島医学会シンポジウム「県民健康調査の成果を県民とともに共有する」, 福島県福島市 (2014.10). (口頭発表)

  7. 石川徹夫, 福島原発事故に関する線量評価の現状. 日本放射線影響学会第57回大会, 鹿児島県鹿児島市 (2014.10). (口頭発表)

2013
  1. 古川雅英, サフー サラタ クマール, 床次眞司, 石川徹夫, 反町篤行, 細田正洋, 大森康孝, Rakesh Ramola, 高自然放射線地域における外部被ばく線量評価とウラン・トリウム放射能の測定. 日本放射線影響学会第56回研究発表会, 青森県青森市 (2013.10). (口頭発表)

  2. 村上香瑛, 安岡由美, 森康則, 大沼章子, 滝沢英夫, 石川徹夫, 向高弘, 液体シンチレーションカウンタによる水中ラドン濃度測定の検討:テフロンバイアル(100mL)を用いた場合. 第63回日本薬学会近畿支部総会, 京都府京田辺市 (2013.10). (ポスター発表)

  3. 林孝積, 安岡由美, 長濱裕幸, 武藤潤, 石川徹夫, 鈴木俊幸, 本間好, 大森康孝, 向高弘, 簡易モデルによる屋外ラドン濃度の季節変動の推定:福島県立医科大学の排気モニターのデータを用いて. 第63回日本薬学会近畿支部総会, 京都府京田辺市 (2013.10). (ポスター発表)