Ryuta Koike

544 total citations
18 papers, 423 citations indexed

About

Ryuta Koike is a scholar working on Surgery, Radiology, Nuclear Medicine and Imaging and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Ryuta Koike has authored 18 papers receiving a total of 423 indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Surgery, 9 papers in Radiology, Nuclear Medicine and Imaging and 8 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Ryuta Koike's work include Medical Imaging Techniques and Applications (5 papers), Esophageal Cancer Research and Treatment (5 papers) and Esophageal and GI Pathology (4 papers). Ryuta Koike is often cited by papers focused on Medical Imaging Techniques and Applications (5 papers), Esophageal Cancer Research and Treatment (5 papers) and Esophageal and GI Pathology (4 papers). Ryuta Koike collaborates with scholars based in Japan, Thailand and United States. Ryuta Koike's co-authors include Yasumasa Nishimura, Kiyoshi Nakamatsu, Toru Shibata, Shuichi Kanamori, Masahiko Okumura, Minoru Suzuki, Manabu Watanabe, Yukinobu Yagyu, Kazuo Awai and Masaaki Inoue and has published in prestigious journals such as Radiology, International Journal of Radiation Oncology*Biology*Physics and Radiotherapy and Oncology.

In The Last Decade

Ryuta Koike

16 papers receiving 415 citations

Peers

Countries citing papers authored by Ryuta Koike

Since Specialization

Citations

This map shows the geographic impact of Ryuta Koike'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 Ryuta Koike with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryuta Koike more than expected).

Fields of papers citing papers by Ryuta Koike

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryuta Koike. 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 Ryuta Koike. The network helps show where Ryuta Koike may publish in the future.

Co-authorship network of co-authors of Ryuta Koike

This figure shows the co-authorship network connecting the top 25 collaborators of Ryuta Koike. A scholar is included among the top collaborators of Ryuta Koike 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 Ryuta Koike. Ryuta Koike is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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18 of 18 papers shown

#	Work	Indexed citations
1	Structural Determination of a Novel Polymorph of Sulfathiazole–Oxalic Acid Complex in Powder Form by Solid-State NMR Spectroscopy on the Basis of Crystallographic Structure of Another Polymorph 2014 ·Crystal Growth & Design ·Ryuta Koike, Kenjirou Higashi, (unknown), Waree Limwikrant, Keiji Yamamoto, Kunikazu Moribe	15
2	A prospective clinical trial of tumor hypoxia imaging with 18F-fluoromisonidazole positron emission tomography and computed tomography (F-MISO PET/CT) before and during radiation therapy 2013 ·Journal of Radiation Research ·(unknown), Yasumasa Nishimura, Toru Shibata, Shuichi Kanamori, Kiyoshi Nakamatsu, Ryuta Koike, (unknown), (unknown), Masaya Tamura, Makoto Hosono	45
3	Long-term Follow-up of a Randomized Phase II Study of Cisplatin/5-FU Concurrent Chemoradiotherapy for Esophageal Cancer (KROSG0101/JROSG021) 2012 ·Japanese Journal of Clinical Oncology ·Yumiko Nishimura, Masahiro Hiraoka, Ryuta Koike, (unknown), Satoshi Itasaka, M Kawamura, Yuji Negoro, Norio Araki, Hirofumi Ishikawa, Takashi Fujii, Norio Mitsuhashi	32
4	Randomized Clinical Trial of Postoperative Strontium-90 Radiation Therapy for Pterygia 2011 ·Strahlentherapie und Onkologie ·Kiyoshi Nakamatsu, Yasumasa Nishimura, Shuichi Kanamori, Ryuta Koike, (unknown), (unknown), Toru Shibata	3
5	Clinical practice and outcome of radiotherapy for esophageal cancer between 1999 and 2003: the Japanese Radiation Oncology Study Group (JROSG) Survey 2011 ·International Journal of Clinical Oncology ·Yasumasa Nishimura, Ryuta Koike, Kazuhiko Ogawa, Ryuta Sasamoto, Yuji Murakami, Yoshiyuki Itoh, Yoshiharu Negoro, Satoshi Itasaka, Toru Sakayauchi, Tetsuro Tamamoto	18
6	[IMRT for esophageal neoplasms]. 2011 ·PubMed ·Yasumasa Nishimura, Ryuta Koike	0
7	Adaptive Radiation Therapy Scheme of a Two-step Intensity Modulated Radiation Therapy (IMRT) Method for Nasopharyngeal Cancer (NPC) 2011 ·International Journal of Radiation OncologyBiologyPhysics ·Yasumasa Nishimura, Toru Shibata, Kiyoshi Nakamatsu, S. Kanamori, Ryuta Koike, Takuya Nishikawa, (unknown), (unknown)	0
8	Definitive Radiation Therapy for Moderately Advanced Laryngeal Cancer: Effects of Accelerated Hyperfractionation 2010 ·Japanese Journal of Clinical Oncology ·(unknown), (unknown), Toru Shibata, Kiyoshi Nakamatsu, S. Kanamori, (unknown), Ryuta Koike, (unknown), Kazuhiko Mori	4
9	A Two-step Intensity-modulated Radiation Therapy Method for Nasopharyngeal Cancer: The Kinki University Experience 2009 ·Japanese Journal of Clinical Oncology ·(unknown), Toru Shibata, Kiyoshi Nakamatsu, S. Kanamori, Ryuta Koike, (unknown), Takuya Nishikawa, (unknown), Masaya Tamura, Masahiko Okumura	27
10	A randomized phase II study of cisplatin/5-FU concurrent chemoradiotherapy for esophageal cancer: Short-term infusion versus protracted infusion chemotherapy (KROSG0101/JROSG021) 2009 ·Radiotherapy and Oncology ·Yasumasa Nishimura, Michihide Mitsumori, Masahiro Hiraoka, Ryuta Koike, Kiyoshi Nakamatsu, Masashi Kawamura, Yoshiharu Negoro, K. Fujiwara, Hideyuki Sakurai, Norio Mitsuhashi	29
11	Concurrent Chemoradiotherapy for Esophageal Cancer With Malignant Fistula 2008 ·International Journal of Radiation OncologyBiologyPhysics ·Ryuta Koike, Yasumasa Nishimura, Kiyoshi Nakamatsu, Shuichi Kanamori, Toru Shibata	22
12	Treatment outcomes and dose-volume histogram analysis of simultaneous integrated boost method for malignant gliomas using intensity-modulated radiotherapy 2008 ·International Journal of Clinical Oncology ·Kiyoshi Nakamatsu, Minoru Suzuki, Yasumasa Nishimura, Shuichi Kanamori, Ryuta Koike, Toru Shibata, (unknown), Masahiko Okumura, Kaoru Okajima, Fumiharu Akai	19
13	A Randomized Phase II Study of Cisplatin/5-FU Concurrent Chemoradiotherapy for Esophageal Cancer: Short-term Infusion versus Protracted Infusion Chemotherapy (KROSG-0101, JROSG-021) 2008 ·International Journal of Radiation OncologyBiologyPhysics ·Yasumasa Nishimura, Michihide Mitsumori, Masahiro Hiraoka, Ryuta Koike, Kiyoshi Nakamatsu, M Kawamura, Yuji Negoro, K. Fujiwara, Hideyuki Sakurai, Norio Mitsuhashi	1
14	Analysis of interfractional set-up errors and intrafractional organ motions during IMRT for head and neck tumors to define an appropriate planning target volume (PTV)- and planning organs at risk volume (PRV)-margins 2006 ·Radiotherapy and Oncology ·Minoru Suzuki, Yasumasa Nishimura, Kiyoshi Nakamatsu, Masahiko Okumura, (unknown), Ryuta Koike, Shuichi Kanamori, Toru Shibata	78
15	Importance of the Initial Volume of Parotid Glands in Xerostomia for Patients with Head and Neck Cancers Treated with IMRT 2005 ·Japanese Journal of Clinical Oncology ·Yasumasa Nishimura, Kiyoshi Nakamatsu, Toru Shibata, Shuichi Kanamori, Ryuta Koike, Masahiko Okumura, Minoru Suzuki	46
16	Moderate versus High Concentration of Contrast Material for Aortic and Hepatic Enhancement and Tumor-to-Liver Contrast at Multi–Detector Row CT 2004 ·Radiology ·Kazuo Awai, Masaaki Inoue, Yukinobu Yagyu, Manabu Watanabe, (unknown), (unknown), Ryuta Koike, Yasumasa Nishimura, Yasuyuki Yamashita	82
17	A randomized trial of 30 Gy/3 fractions versus 40 Gy/4 fractions in postoperative strontium-90 radiation therapy (RT) for pterygia 2004 ·International Journal of Radiation OncologyBiologyPhysics ·Kiyoshi Nakamatsu, Yasumasa Nishimura, Yukinobu Yagyu, Ryuta Koike, S. Kanamori	1
18	[A case of idiopathic hypereosinophilic syndrome (HES) complicated by pulmonary infarction]. 1991 ·PubMed ·Ryuta Koike, (unknown), H Takahashi	1

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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