Ryuichi Nishii

2.5k total citations
132 papers, 1.8k citations indexed

About

Ryuichi Nishii is a scholar working on Radiology, Nuclear Medicine and Imaging, Oncology and Molecular Biology. According to data from OpenAlex, Ryuichi Nishii has authored 132 papers receiving a total of 1.8k indexed citations (citations by other indexed papers that have themselves been cited), including 59 papers in Radiology, Nuclear Medicine and Imaging, 35 papers in Oncology and 30 papers in Molecular Biology. Recurrent topics in Ryuichi Nishii's work include Medical Imaging Techniques and Applications (37 papers), Radiopharmaceutical Chemistry and Applications (29 papers) and Drug Transport and Resistance Mechanisms (17 papers). Ryuichi Nishii is often cited by papers focused on Medical Imaging Techniques and Applications (37 papers), Radiopharmaceutical Chemistry and Applications (29 papers) and Drug Transport and Resistance Mechanisms (17 papers). Ryuichi Nishii collaborates with scholars based in Japan, United States and Indonesia. Ryuichi Nishii's co-authors include Keiichi Kawai, Shinya Kagawa, Tatsuya Higashi, Shigeki Nagamachi, Shozo Tamura, Seigo Fujita, Hideo Saji, Masahiro Ono, Shigemi Futami and Hideyuki Wakamatsu and has published in prestigious journals such as PLoS ONE, Brain and Stroke.

In The Last Decade

Ryuichi Nishii

123 papers receiving 1.8k citations

Peers

Countries citing papers authored by Ryuichi Nishii

Since Specialization

Citations

This map shows the geographic impact of Ryuichi Nishii's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ryuichi Nishii with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryuichi Nishii more than expected).

Fields of papers citing papers by Ryuichi Nishii

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryuichi Nishii. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ryuichi Nishii. The network helps show where Ryuichi Nishii may publish in the future.

Co-authorship network of co-authors of Ryuichi Nishii

This figure shows the co-authorship network connecting the top 25 collaborators of Ryuichi Nishii. A scholar is included among the top collaborators of Ryuichi Nishii based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ryuichi Nishii. Ryuichi Nishii is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	1. Development and Clinical Application Prospects of Nuclear Medicine Therapy 2025 ·Japanese Journal of Radiological Technology ·Ryuichi Nishii	0
2	Predictive factors for the efficacy of radioiodine therapy in patients with Graves’ disease 2025 ·Nuclear Medicine Communications ·(unknown), (unknown), Shinji Abe, Rintaro Ito, (unknown), Ryogo Minamimoto, Ryuichi Nishii, Shinji Naganawa, Katsuhiko Kato	0
3	A simple method to shorten the apparent dead time in the dosimetry of Lu-177 for targeted radionuclide therapy using a gamma camera 2024 ·Physica Medica ·Kohei Nakanishi, (unknown), Shinji Abe, Ryuichi Nishii, Katsuhiko Kato	1
4	Potential Application of the Myocardial Scintigraphy Agent [123I]BMIPP in Colon Cancer Cell Imaging 2024 ·International Journal of Molecular Sciences ·(unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), Ryuichi Nishii, Masato Kobayashi, Keiichi Kawai	0
5	Biological Distribution after Oral Administration of Radioiodine-Labeled Acetaminophen to Estimate Gastrointestinal Absorption Function via OATPs, OATs, and/or MRPs 2023 ·Pharmaceutics ·(unknown), (unknown), (unknown), (unknown), Masato Kobayashi, (unknown), Ryuichi Nishii, Kodai Nishi, Takeo Nakanishi, Ikumi Tamai, Keiichi Kawai	2
6	Evaluation of L-Alanine Metabolism in Bacteria and Whole-Body Distribution with Bacterial Infection Model Mice 2023 ·International Journal of Molecular Sciences ·(unknown), (unknown), (unknown), Masato Kobayashi, (unknown), (unknown), (unknown), (unknown), Kodai Nishi, (unknown), Ryuichi Nishii, Naoto Shikano, Shigefumi Okamoto, Keiichi Kawai	4
7	123I-BMIPP, a Radiopharmaceutical for Myocardial Fatty Acid Metabolism Scintigraphy, Could Be Utilized in Bacterial Infection Imaging 2022 ·Pharmaceutics ·(unknown), (unknown), Masato Kobayashi, (unknown), (unknown), (unknown), Ken‐ichi Okazaki, Kodai Nishi, (unknown), Ryuichi Nishii, Naoto Shikano, Shigefumi Okamoto, (unknown), Keiichi Kawai	5
8	Comparison of L- and D-Amino Acids for Bacterial Imaging in Lung Infection Mouse Model 2022 ·International Journal of Molecular Sciences ·(unknown), (unknown), Masato Kobayashi, (unknown), (unknown), Kodai Nishi, (unknown), Ryuichi Nishii, Naoto Shikano, Shigefumi Okamoto, Keiichi Kawai	5
9	Translocator protein imaging with 18F-FEDAC-positron emission tomography in rabbit atherosclerosis and its presence in human coronary vulnerable plaques 2021 ·Atherosclerosis ·Kazunari Maekawa, Atsushi B. Tsuji, Atsushi Yamashita, Aya Sugyo, Chietsugu Katoh, Minghui Tang, Kensaku Nishihira, Yoshisato Shibata, Chihiro Koshimoto, Ming‐Rong Zhang, Ryuichi Nishii, Keiichiro Yoshinaga, Yujiro Asada	10
10	A Nucleoside Derivative 5-Vinyluridine (VrU) for Imaging RNA in Cells and Animals 2019 ·Bioconjugate Chemistry ·Hongshan Liu, Takumi Ishizuka, Makiko Kawaguchi, Ryuichi Nishii, Hiroaki Kataoka, Yan Xu	19
11	PET probe detecting non-small cell lung cancer susceptible to epidermal growth factor receptor tyrosine kinase inhibitor therapy 2018 ·Bioorganic & Medicinal Chemistry ·A. Makino, A. Miyazaki, (unknown), Hiroyuki Kimura, Kenji Arimitsu, Masahiko Hirata, Yoshiro Ohmomo, Ryuichi Nishii, Hidehiko Okazawa, Yasushi Kiyono, Masahiro Ono, Hideo Saji	7
12	Development of radioiodine labeled acetaminophen for specific, high-contrast imaging of malignant melanoma 2018 ·Nuclear Medicine and Biology ·(unknown), Masato Kobayashi, Kohei Yamada, Kodai Nishi, Kotaro Takahashi, (unknown), Ryuichi Nishii, Leo G. Flores, Naoto Shikano, Munetaka Kunishima, Keiichi Kawai	1
13	Do TSH, FT3, and FT4 Impact BAT Visualization of Clinical FDG-PET/CT Images? 2018 ·Contrast Media & Molecular Imaging ·Ryuichi Nishii, Shigeki Nagamachi, Youichi Mizutani, (unknown), (unknown), Hideyuki Wakamatsu, Seigo Fujita, Tatsuya Higashi, Keiichiro Yoshinaga, Tsuneo Saga, Toshinori Hirai	2
14	123I-iomazenil whole-body imaging to detect hepatic carboxylesterase drug-metabolizing enzyme activity 2018 ·Nuclear Medicine Communications ·(unknown), Masato Kobayashi, Ken‐ichi Fujita, Kotaro Takahashi, (unknown), (unknown), Kodai Nishi, Ryuichi Nishii, Naoto Shikano, Kazuki Fukuchi, Keiichi Kawai	2
15	Relationship between [ 14 C]MeAIB uptake and amino acid transporter family gene expression levels or proliferative activity in a pilot study in human carcinoma cells: Comparison with [ 3 H]methionine uptake 2017 ·Nuclear Medicine and Biology ·Shinya Kagawa, Ryuichi Nishii, Tatsuya Higashi, Hiroshi Yamauchi, (unknown), Hiroyuki Okudaira, Masato Kobayashi, Mitsuyoshi Yoshimoto, Naoto Shikano, Keiichi Kawai	5
16	Fatty Acid Synthase Is a Key Target in Multiple Essential Tumor Functions of Prostate Cancer: Uptake of Radiolabeled Acetate as a Predictor of the Targeted Therapy Outcome 2013 ·PLoS ONE ·Yukie Yoshii, Takako Furukawa, Nobuyuki Oyama, Yoko Hasegawa, Yasushi Kiyono, Ryuichi Nishii, Atsuo Waki, Atsushi B. Tsuji, Chizuru Sogawa, Hidekatsu Wakizaka, Toshimitsu Fukumura, Hiroshi Yoshii, Yasuhisa Fujibayashi, Jason S. Lewis, Tsuneo Saga	88
17	Competitive Displacement of Serum Protein Binding of Radiopharmaceuticals with Amino Acid Infusion Investigated withN-Isopropyl-p-¹²³I-Iodoamphetamine 2009 ·Journal of Nuclear Medicine ·(unknown), Naoto Shikano, Norito Takamura, Ryuichi Nishii, Keishi Yamasaki, Masato Kobayashi, Shigeki Nagamachi, Shozo Tamura, Keiichi Kawai	5
18	Comparison of the transcellular transport of FDG and D-glucose by the kidney epithelial cell line, LLC-PK1 2009 ·Nuclear Medicine Communications ·Masato Kobayashi, Naoto Shikano, Ryuichi Nishii, Yasushi Kiyono, (unknown), Kodai Nishi, (unknown), Hiroyuki Okudaira, Masato Ogura, Mitsuyoshi Yoshimoto, Hidehiko Okazawa, Yasuhisa Fujibayashi, Keiichi Kawai	13
19	FDG PET as a prognostic predictor in the early post-therapeutic evaluation for unresectable hepatocellular carcinoma 2009 ·European Journal of Nuclear Medicine and Molecular Imaging ·Tatsuya Higashi, Etsuro Hatano, Iwao Ikai, Ryuichi Nishii, Yuji Nakamoto, Koichi Ishizu, (unknown), Hidekazu Kawashima, Kaori Togashi, Satoru Seo, Koji Kitamura, (unknown), (unknown)	39
20	Effect of percutaneous endoscopic gastrostomy on gastrointestinal motility: evaluation by gastric-emptying scintigraphy 2008 ·Nuclear Medicine Communications ·Hideyuki Wakamatsu, Shigeki Nagamachi, Ryuichi Nishii, Kazutaka Higaki, Keiichi Kawai, Kiyohisa Kamimura, Seigo Fujita, Shigemi Futami, Shozo Tamura	4

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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