Papers - OKUDA KOICHI
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Establishment of a 123I-meta-iodobenzylguanidine normal database for D-SPECT using Japanese and Italian data
Xue Zhang, Kenichi Nakajima, Wanda Acampa, Roberta Assante, Adriana D’Antonio, Koichi Okuda, Kunihiko Yokoyama, Seigo Kinuya
Annals of Nuclear Medicine 39 ( 9 ) 952 - 965 2025.6
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Hirosaki team at the NTCIR-18 RadNLP2024 Shared Task: Few-Shot Learning and Prompt Engineering for TNM Staging Classification of English Radiology Reports Using Large Language Models．
Mori R, Okuda K, Hosokawa S, Komoda T, Watanabe T, Takahashi T．
Proceedings of the 18th NTCIR Conference 277 - 283 2025.6
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Evaluation of the Characteristics of Short Acquisition Times Using the Clear Adaptive Low-Noise Method and Advanced Intelligent Clear-IQ Engine.
Ogasawara R, Irikawa A, Watanabe Y, Harada T, Hosokawa S, Koyama K, Tsuda K, Kimura T, Okuda K, Takahashi Y.
Radiation 5 ( 1 ) 18 2025
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Detectability of cold tumors by xSPECT bone technology compared with hot tumors: a supine phantom study.
Takayuki Shibutani, Takahiro Konishi, Hajime Ichikawa, Masahisa Onoguchi, Hiroto Yoneyama, Toshimune Ito, Koichi Okuda, Kenichi Nakajima
Physical and engineering sciences in medicine 2023.12
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Phantom-Based Standardization Method for 123I-meta-iodobenzylguanidine Heart-to-Mediastinum Ratio Validated by D-SPECT Versus Anger Camera
Yamashita S, Nakajima K, Okuda K, Yamamoto H, Shibutani T, Yoneyama T, Tsuji S, Yokoyama K
Ann Nucl Cardiol. 9 ( 1 ) 85 - 90 2023.8
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Feasibility of using counts-per-volume approach with a new SPECT phantom to optimize the relationship between administered dose and acquisition time.
Hajime Ichikawa, Takayuki Shibutani, Hideki Shimada, Koichi Okuda, Toyohiro Kato, Hiroki Nosaka, Akio Nagaki, Masahisa Onoguchi
Radiological physics and technology 16 ( 2 ) 244 - 253 2023.6
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Modified signal-to-noise ratio in the liver using the background-to-lung activity ratio to assess image quality of whole-body F-18-fluorodeoxyglucose positron emission tomography
Yamashita Shozo, Okuda Koichi, Nakaichi Tetsu, Yamamoto Haruki, Yoneyama Tatsuya, Yokoyama Kunihiko
RADIOLOGICAL PHYSICS AND TECHNOLOGY 16 ( 1 ) 94 - 101 2023.3
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Machine learning-based prediction of conversion coefficients for I-123 metaiodobenzylguanidine heart-to-mediastinum ratio
Okuda Koichi, Nakajima Kenichi, Kitamura Chiemi, Ljungberg Michael, Hosoya Tetsuo, Kirihara Yumiko, Hashimoto Mitsumasa
JOURNAL OF NUCLEAR CARDIOLOGY 30 ( 4 ) 1630 - 1641 2023.2
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Comparison of Taiwanese and European Calibration Factors for Heart-to-Mediastinum Ratio in Multicenter <sup>123</sup>I-mIBG Phantom Studies
Okuda Koichi, Nakajima Kenichi, Hung Guang-Uei, Wu Hao-Ting, Verschure Derk O., Verberne Hein J., Kitamura Chiemi
Annals of Nuclear Cardiology 9 ( 1 ) 54 - 60 2023
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[Trends and Future Prospects of AI Technology Utilization Research in JSRT -Challenges to Tackle and the Expected Role of Our Academic Society !?].
Kawashita I, Hayashi N, Tominaga M, Fujibuchi T, Magome T, Yagahara A, Okuda K, Shinohara N
Nihon Hoshasen Gijutsu Gakkai zasshi 79 ( 8 ) 838 - 850 2023
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心臓専用半導体検出器ガンマカメラの再構成法が虚血診断能に与える影響について
米山 寛人, 中嶋 憲一, 小西 貴広, 奥田 光一, 澁谷 孝行, 小野口 昌久
核医学技術 42 ( 予稿集 ) 346 - 346 2022.8
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Beads phantom for evaluating heterogeneity of SUV on 18F-FDG PET images.
Koichi Okuda, Hisahiro Saito, Shozo Yamashita, Haruki Yamamoto, Hajime Ichikawa, Toyohiro Kato, Kunihiko Yokoyama, Mariko Doai, Mitsumasa Hashimoto, Munetaka Matoba
Annals of nuclear medicine 36 ( 5 ) 495 - 503 2022.5
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心臓専用半導体検出器ガンマカメラと3検出器型ガンマカメラの虚血診断能の比較 冠動脈造影の結果との比較
米山 寛人, 中嶋 憲一, 小西 貴広, 奥田 光一, 澁谷 孝行, 小野口 昌久
日本心臓核医学会ニュースレター 24 ( 2 ) 95 - 95 2022.5
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心臓専用半導体検出器ガンマカメラと3検出器型ガンマカメラの虚血診断能の比較 心筋ファントムによる検証
米山 寛人, 中嶋 憲一, 小西 貴広, 奥田 光一, 澁谷 孝行, 小野口 昌久
日本心臓核医学会ニュースレター 24 ( 2 ) 94 - 94 2022.5
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[[Nuclear Medicine] 6. Digital Phantoms for Nuclear Medicine].
Okuda K
Nihon Hoshasen Gijutsu Gakkai zasshi 78 ( 8 ) 871 - 875 2022
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Should Artifacts of the Inferior Wall Be Reduced Using Image Processing?
Koichi Okuda, Kenichi Nakajima, Takayuki Shibutani
Annals of nuclear cardiology 8 ( 1 ) 4 - 6 2022
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Normal and Range Value Evaluations Using Heart Risk View-Function Based on the Japanese Societyof Nuclear Medicine Working Group Database.
Kosuke Tatsuno, Koichi Okuda, Kenichi Nakajima, Hisahiro Saito, Takayuki Shibutani, Masahisa Onoguchi, Tomoko Takahashi, Takafumi Mochizuki, Naoto Watanabe, Munetaka Matoba
Annals of nuclear cardiology 8 ( 1 ) 51 - 56 2022
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Clinical Validation of Japanese Normal Myocardial Perfusion Imaging Databases Using Semi-conductor Gamma Camera (D-SPECT)
Naoya Matsumoto, Shonosuke Sugai, Yasuyuki Suzuki, Nobuo Iguchi, Mamoru Nanasato, Keisuke Kiso, Yasuyo Taniguchi, Tatsuya Yoneyama, Koichi Okuda, Kenichi Nakajima
Annals of Nuclear Cardiology 8 ( 1 ) 36 - 41 2022
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The utility of heart-to-mediastinum ratio using a planar image created from IQ-SPECT with Iodine-123 meta-iodobenzylguanidine.
Takayuki Shibutani, Kenichi Nakajima, Hiroto Yoneyama, Takahiro Konishi, Koichi Okuda, Masahisa Onoguchi, Seigo Kinuya
Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology 28 ( 6 ) 2569 - 2577 2021.12
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Validation of Simulation Codes for Nuclear Imaging Using Digital Phantoms
奥田光一, 野坂広樹, 伊東利宗, 松友紀和, 市川肇, 白川誠士, 山木範泰, 菊池明泰, 對間博之, LJUNGBERG Michael
日本放射線技術学会雑誌 77(1) ( 1 ) 41 - 47 2021.12