Japan Human Brain Mapping Society

2021.12 - Now

Japan Society of Autopsy imaging

2017.5 - Now

Japanese Society of Interventional Radiology

2016.4 - Now

JDLA Deep Learning For GENERAL 2020#1

  20200314

ITパスポート

  20180413

Complete response of glottic cancer to intra-arterial infusion chemotherapy combined with radiotherapy: A report of 4 cases.

Ryo Yamakuni, Hirofumi Sekino, Masakazu Ikeda, Yoshiki Endo, Masamitsu Ikeda, Shiro Ishii, Kenji Fukushima, Shigeyuki Murono, Yoshiyuki Suzuki, Hiroshi Ito

Radiology case reports   18 ( 12 )   4514 - 4521   2023.12（ ISSN:1930-0433 ）

Oxygen extraction fraction is not uniform in human brain: a positron emission tomography study.

Ito H, Ibaraki M, Yamakuni R, Hakozaki M, Ukon N, Ishii S, Fukushima K, Kubo H, Takahashi K

The journal of physiological sciences : JPS   73 ( 1 )   25   2023.10（ ISSN:1880-6546 ）

Prediction of Anemia From Cerebral Venous Sinus Attenuation on Deep-Learning Reconstructed Brain Computed Tomography Images.

Ryo Yamakuni, Hirofumi Sekino, Masaki Saito, Takeyasu Kakamu, Katsuhiro Takahashi, Junko Hara, Hiroki Suenaga, Shiro Ishii, Kenji Fukushima, Hiroshi Ito

Journal of computer assisted tomography   47 ( 5 )   796 - 805   2023.9（ ISSN:0363-8715 ）

Lumbar intradural space reduction during the Valsalva maneuver observed using cine MRI and MR myelography: a single-case experimental study.

Ryo Yamakuni, Shinya Seino, Shiro Ishii, Hironobu Ishikawa, Katsuyuki Kikori, Tatsuya Ando, Takeyasu Kakamu, Kenji Fukushima, Koji Otani, Hiroshi Ito

Acta neurochirurgica   165 ( 8 )   2111 - 2120   2023.8（ ISSN:0001-6268 ）

Relationship between lumbar spinal stenosis and cauda equina movement during the Valsalva maneuver.

Ryo Yamakuni, Shiro Ishii, Takeyasu Kakamu, Hironobu Ishikawa, Hirofumi Sekino, Shinya Seino, Kenji Fukushima, Koji Otani, Hiroshi Ito

Skeletal radiology   52 ( 7 )   1349 - 1358   2023.7（ ISSN:0364-2348 ）

Different prognostic outcomes in two cases of FDG-PET/CT-Positive and -negative cardiac angiosarcoma.

Ryo Yamakuni, Shiro Ishii, Shoki Yamada, Junko Hara, Hiroki Suenaga, Shigeyasu Sugawara, Hirofumi Sekino, Takayoshi Yamaki, Keiichi Ishida, Yuko Hashimoto, Hiroshi Ito

Fukushima journal of medical science   69 ( 1 )   45 - 49   2023.4（ ISSN:0016-2590 ）

Cauda equina movement during the Valsalva maneuver in two patients with Lumbar spinal canal stenosis.

Ryo Yamakuni, Hironobu Ishikawa, Osamu Hasegawa, Hirofumi Sekino, Shiro Ishii, Koji Otani, Hiroshi Ito

Fukushima journal of medical science   68 ( 2 )   135 - 141   2022（ ISSN:0016-2590 ）

Left ventricular diastolic inflow and myocardial flow reserve in patients with coronary artery disease: simultaneous analysis of 4D-Flow and myocardial perfusion using hybrid PETMR.

Keiichiro Endo, Kenji Fukushima, Masataka Katahira, Takatoyo Kiko, Ryo Yamakuni, Naoyuki Ukon, Takeshi Shimizu, Shiro Ishii, Masayoshi Oikawa, Hiroshi Ito, Yasuchika Takeishi

The international journal of cardiovascular imaging   2025.4（ ISSN:1569-5794 ）

Impact of uterine displacement on T2-weighted image quality in the female pelvic MRI.

Hironobu Ishikawa, Masahiko Monma, Yoshiyuki Ishimori, Kousaku Saotome, Shiro Ishii, Hirofumi Sekino, Ryo Yamakuni, Takeyasu Kakamu, Daisuke Oura, Yuma Takahashi, Shinya Seino, Masanori Yusa, Hiroshi Ito

Radiological physics and technology   18 ( 1 )   127 - 135   2025.3（ ISSN:1865-0333 ）

Feasibility of position emission tomography derived endocardial wall strain: direct comparison with magnetic resonance using hybrid 13N ammonia PETMR system.

Masataka Katahira, Kenji Fukushima, Keiichiro Endo, Masateru Kawakubo, Naoyuki Ukon, Ryo Yamakuni, Takatoyo Kiko, Takeshi Shimizu, Shiro Ishii, Takayoshi Yamaki, Michinobu Nagao, Hiroshi Ito, Yasuchika Takeishi

Annals of nuclear medicine   39 ( 3 )   285 - 294   2025.3（ ISSN:0914-7187 ）

Aortomesenteric angle: A contrast-enhanced computed tomography analysis of respiratory phase and visceral fat impact

Hirofumi Sekino, Shiro Ishii, Yumi Saito, Junko Hara, Ryo Yamakuni, Kenji Fukushima, Hiroshi Ito

Journal of Clinical Imaging Science   15   2 - 2   2025（ ISSN:2156-7514 ）

Respiratory Displacement of the Right Adrenal Vein: Comparison of Inspiratory and Expiratory Computed Tomography With Catheter Venography.

Junko Hara, Shiro Ishii, Hayato Tanabe, Ryo Yamakuni, Hiroki Suenaga, Teruyuki Kono, Daichi Kuroiwa, Hirofumi Sekino, Michio Shimabukuro, Hiroshi Ito

Journal of computer assisted tomography   48 ( 6 )   882 - 888   2024.11（ ISSN:0363-8715 ）

Impact of iodine contrast media on gamma camera-based GFR and factors affecting the difference between serum creatinine-based estimated GFR and Gate's GFR.

Shiro Ishii, Shigeyasu Sugawara, Yumi Tanaka, Natsumi Kawamoto, Junko Hara, Ryo Yamakuni, Hiroki Suenaga, Kenji Fukushima, Hiroshi Ito

Nuclear medicine communications   45 ( 7 )   573 - 580   2024.7（ ISSN:0143-3636 ）

Prognostic significance of left atrial strain combined with left ventricular strain using cardiac magnetic resonance feature tracking in patients with heart failure with preserved ejection fraction.

Masataka Katahira, Kenji Fukushima, Takatoyo Kiko, Ryo Yamakuni, Keiichiro Endo, Akiomi Yoshihisa, Shiro Ishii, Hiroshi Ito, Yasuchika Takeishi

Heart and vessels   39 ( 5 )   404 - 411   2024.5（ ISSN:0910-8327 ）

Reduced dopamine transporter availability in drug-naive adult attention-deficit/hyperactivity disorder.

Shuntaro Itagaki, Takashi Ohnishi, Wataru Toda, Aya Sato, Junya Matsumoto, Hiroshi Ito, Shiro Ishii, Ryo Yamakuni, Itaru Miura, Hirooki Yabe

PCN reports : psychiatry and clinical neurosciences   3 ( 1 )   e177   2024.3（ ISSN:2769-2558 ）

Abnormal motor cortical plasticity as a useful neurophysiological biomarker for Alzheimer's disease pathology.

Takenobu Murakami, Mitsunari Abe, Amanda Tiksnadi, Ayaka Nemoto, Miyako Futamura, Ryo Yamakuni, Hitoshi Kubo, Naoto Kobayashi, Hiroshi Ito, Ritsuko Hanajima, Yasuhiro Hashimoto, Yoshikazu Ugawa

Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology   158   170 - 179   2024.2（ ISSN:1388-2457 ）

Incidence of Bowel Wall Swelling Induced by Iodine-Contrast Media and Its Association With Gastrointestinal Manifestation.

Shiro Ishii, Ryo Yamakuni, Takao Tsuchiya, Anna Yamaki, Junko Hara, Shigeyasu Sugawara, Hirofumi Sekino, Kenji Fukushima, Hiroshi Ito

Journal of computer assisted tomography   48 ( 1 )   42 - 48   2024.1（ ISSN:0363-8715 ）

Investigation of factors affecting CT attenuation and glucose metabolism of bone marrow as seen on PET/CT scans.

Shiro Ishii, Ryo Yamakuni, Shigeyasu Sugawara, Junko Hara, Yoshiki Endo, Hirotoshi Hotsumi, Mahori Hiruta, Honami Kobiyama, Yuki Yaginuma, Kenji Fukushima, Hiroshi Ito

American journal of nuclear medicine and molecular imaging   14 ( 1 )   22 - 30   2024（ ISSN:2160-8407 ）

A Quantitative Diagnostic Method Using 99mTc-pyrophosphate Lateral Planar Images to Distinguish Between Transthyretin Amyloid Cardiomyopathy and False-Positive Images Due to Blood Pools.

Junko Hara, Shiro Ishii, Honami Kobiyama, Kenji Fukushima, Natsumi Kawamoto, Ryo Yamakuni, Hiroki Suenaga, Yuuki Muto, Shigeyasu Sugawara, Akihiko Sato, Masayoshi Oikawa, Yasuchika Takeishi, Hiroshi Ito

Annals of nuclear cardiology   10 ( 1 )   23 - 28   2024（ ISSN:2189-3926 ）

Global and Regional Reduction of Myocardial Perfusion in Patients with Transthyretin Type of Cardiac Amyloidosis: A Dual SPECT Study Using 99mTc Pyrophosphate and 201Thallium.

Hiroki Suenaga, Kenji Fukushima, Shiro Ishii, Osamu Hasegawa, Yuuki Muto, Ryo Yamakuni, Shigeyasu Sugawara, Hirofumi Sekino, Akihiko Sato, Masayoshi Oikawa, Yasuchika Takeishi, Hiroshi Ito

Annals of nuclear cardiology   10 ( 1 )   16 - 22   2024（ ISSN:2189-3926 ）

Harmonizing multisite data with the ComBat method for enhanced Parkinson's disease diagnosis via DAT-SPECT.

Noritaka Wakasugi, Harumasa Takano, Mitsunari Abe, Nobukatsu Sawamoto, Toshiya Murai, Toshiki Mizuno, Teruyuki Matsuoka, Ryo Yamakuni, Hirooki Yabe, Hiroshi Matsuda, Takashi Hanakawa

Frontiers in neurology   15   1306546 - 1306546   2024（ ISSN:1664-2295 ）

Simultaneous assessment of left ventricular mechanical dyssynchrony using integrated 13N-ammonia PETMR system: direct comparison of PET phase analysis and MR feature tracking.

Kenji Fukushima, Keiichiro Endo, Ryo Yamakuni, Takatoyo Kiko, Hirofumi Sekino, Katsuyuki Kikori, Naoyuki Ukon, Shiro Ishii, Takayoshi Yamaki, Hiroshi Ito, Yasuchika Takeishi

Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology   30 ( 5 )   1947 - 1958   2023.10（ ISSN:1071-3581 ）

Conventional versus aspiration-type needles in CT-guided biopsy for chest pathologies/lesions: A comparative study.

Hirofumi Sekino, Shiro Ishii, Ryo Yamakuni, Hiroki Suenaga, Daichi Kuroiwa, Kenji Fukushima, Hiroshi Ito

Current medical imaging   2023.5

Hypertrophic Pachymeningitis Demonstrated by Whole-Body 67Ga Scintigraphy.

Shiro Ishii, Shigeyasu Sugawara, Ryo Yamakuni, Hirofumi Sekino, Hiroshi Ito

Clinical nuclear medicine   47 ( 2 )   e149 - e151   2022.2（ ISSN:0363-9762 ）

Prognostic Value of Simultaneous Analysis with Myocardial Flow Reserve and Right Ventricular Strain by Hybrid 13N-Ammonia Positron Emission Tomography/Magnetic Resonance Imaging in Coronary Artery Disease.

Keiichiro Endo, Takatoyo Kiko, Ryo Yamakuni, Tomofumi Misaka, Takayoshi Yamaki, Kazuhiko Nakazato, Kenji Fukushima, Yasuchika Takeishi

International heart journal   63 ( 6 )   1063 - 1069   2022（ ISSN:1349-2365 ）

Evaluation of Computed Tomography Attenuation Value of Proximal Femoral Marrow to Diagnose and Differentiate Hematologic Malignancies, Myelofibrosis, and Aplastic Anemia

Ishii, S., Ohkawara, H., Endo, Y., Hara, J., Hotsumi, H., Yamakuni, R., Sugawara, S., Sekino, H., Ito, H.

Journal of Computer Assisted Tomography   45 ( 6 )   912 - 918   2021.11（ ISSN:0363-8715 ）

Usefulness of Model-Based Iterative Reconstruction in Brain CT as Compared with Hybrid Iterative Reconstruction

Sekino, H., Ishii, S., Kuroiwa, D., Fujimaki, H., Sugawara, S., Suenaga, H., Hakozaki, M., Yamakuni, R., Watanabe, H., Hasegawa, O., Ito, H.

Journal of Computer Assisted Tomography   45 ( 4 )   600 - 605   2021.7（ ISSN:0363-8715 ）

Integrated PET/MRI scanner with oxygen-15 labeled gases for quantification of cerebral blood flow, cerebral blood volume, cerebral oxygen extraction fraction and cerebral metabolic rate of oxygen.

Hiroshi Ito, Hitoshi Kubo, Kazuhiro Takahashi, Ken-Ichi Nishijima, Naoyuki Ukon, Ayaka Nemoto, Shigeyasu Sugawara, Ryo Yamakuni, Masanobu Ibaraki, Shiro Ishii

Annals of nuclear medicine   35 ( 4 )   421 - 428   2021.4（ ISSN:0914-7187 ）

Causes of false negatives in technetium-99 m methoxyisobutylisonitrile scintigraphy for hyperparathyroidism: influence of size and cysts in parathyroid lesions.

Shiro Ishii, Shigeyasu Sugawara, Yuuki Yaginuma, Honami Kobiyama, Mahori Hiruta, Hirotake Watanabe, Ryo Yamakuni, Motoharu Hakozaki, Hideki Fujimaki, Hiroshi Ito

Annals of nuclear medicine   34 ( 12 )   892 - 898   2020.12（ ISSN:0914-7187 ）

Lumbar vertebral venous plexus dilation during Valsalva maneuver observed by FIESTA Cine MRI

大脳基底核および白質に広範な石灰化を認めた慢性活動性Epstein-Barrウイルス感染症の1例

第147回日本医学放射線学会 北日本地方会・第92回日本核医学会 北日本地方会  

The 65th Annual Meeting of the Japanese Society of Cerebral Blood Flow and Metabolism (BRAIN Japan 2022)

Liver IVIM in Patients with Chronic Liver Disease: Relationship with ALBI Score, mALBI Grade, FIB-4 Index, and APRI Score

第50回日本磁気共鳴医学会大会  

Prognostic significance of simultaneous analysis with global myocardial flow reserve and myocardial strain under vasodilator stress using cardiac PETMR

SNMMI 2022 Annual Meeting  

新生児および乳児における脳静脈洞内のT1強調画像高信号域と臨床的意義について：2施設での検討

第 24 回日本ヒト脳機能マッピング学会  

A Case of Cauda Equina Moving During Valsalva Maneuver with Spinal Canal Stenosis

The 51st Annual Meeting of The Japanese Society of Neuroradiology  

片側もやもや病を原因とした脳出血の超急性期CT所見

第2回東北NR懇話会  

放射線併用動注化学療法により完全奏効を得たcT3N0M0声門癌の4例

第50回日本IVR学会総会  

Effect of phantom study in 99mTc-ECD IBUR method for measurement of cerebral blood flow

Hyper intensity on T1WI in cerebral venous sinus of neonates and infants; retrospective study of 135 cases and consideration of clinical significance

The 48th Annual Meeting of the Japanese Society for Magnetic Resonance in Medicine  

angiocentric glioma with signet ring cell ependymoma componentの一例

第140回日本医学放射線学会北日本地方会  

PET-CTを施行した心臓血管肉腫の2例

第32回ふくしま核医学会