Koichi Okuya

636 total citations
41 papers, 480 citations indexed

About

Koichi Okuya is a scholar working on Oncology, Surgery and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Koichi Okuya has authored 41 papers receiving a total of 480 indexed citations (citations by other indexed papers that have themselves been cited), including 26 papers in Oncology, 25 papers in Surgery and 7 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Koichi Okuya's work include Colorectal Cancer Surgical Treatments (25 papers), Anorectal Disease Treatments and Outcomes (8 papers) and Colorectal and Anal Carcinomas (7 papers). Koichi Okuya is often cited by papers focused on Colorectal Cancer Surgical Treatments (25 papers), Anorectal Disease Treatments and Outcomes (8 papers) and Colorectal and Anal Carcinomas (7 papers). Koichi Okuya collaborates with scholars based in Japan and United States. Koichi Okuya's co-authors include Emi Akizuki, Ichiro Takemasa, Noriyuki Sato, Masayuki Ishii, Toshihiko Torigoe, Yasuaki Tamura, Goro Kutomi, Keita Saito, Atsushi Hamabe and Kenji Okita and has published in prestigious journals such as Journal of Clinical Oncology, SHILAP Revista de lepidopterología and The Journal of Immunology.

In The Last Decade

Koichi Okuya

34 papers receiving 477 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Koichi Okuya Japan	14	220	190	125	119	81	41	480
Yasuyuki Tomiyama Japan	12	155 0.7×	113 0.6×	39 0.3×	113 0.9×	58 0.7×	32	546
Rony Weitzen Israel	11	186 0.8×	47 0.2×	76 0.6×	103 0.9×	116 1.4×	33	427
Takao Katsube Japan	9	105 0.5×	77 0.4×	84 0.7×	148 1.2×	29 0.4×	17	451
Pengfei Huang China	13	168 0.8×	119 0.6×	39 0.3×	198 1.7×	174 2.1×	23	565
Nam Ik Han South Korea	13	133 0.6×	75 0.4×	92 0.7×	87 0.7×	57 0.7×	40	612
Shouwang Cai China	12	258 1.2×	276 1.5×	68 0.5×	83 0.7×	133 1.6×	31	510
Tomonori Shimonishi Japan	9	151 0.7×	205 1.1×	89 0.7×	111 0.9×	85 1.0×	16	403
Clemens Thoma United States	8	120 0.5×	55 0.3×	48 0.4×	170 1.4×	94 1.2×	106	361
Giulia Veronesi Italy	11	186 0.8×	66 0.3×	49 0.4×	122 1.0×	61 0.8×	58	367

Countries citing papers authored by Koichi Okuya

Since Specialization

Citations

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

Fields of papers citing papers by Koichi Okuya

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koichi Okuya

This figure shows the co-authorship network connecting the top 25 collaborators of Koichi Okuya. A scholar is included among the top collaborators of Koichi Okuya 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 Koichi Okuya. Koichi Okuya 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

Miyo, Masaaki, Emi Akizuki, Koichi Okuya, et al.. (2025). Diagnosis and Treatment of Low Anterior Resection Syndrome. Journal of the Anus Rectum and Colon. 9(1). 1–9. 2 indexed citations

Hamabe, Atsushi, Ichiro Takemasa, Masayuki Ishii, et al.. (2024). The potential of an artificial intelligence for diagnosing MRI images in rectal cancer: multicenter collaborative trial. Journal of Gastroenterology. 59(10). 896–904. 5 indexed citations

Kagawa, Yoshinori, Jun Watanabe, Koji Ando, et al.. (2024). Circulating tumor DNA for predicting radiographic and pathologic response to total neoadjuvant therapy in locally advanced rectal cancer: ENSEMBLE-1.. Journal of Clinical Oncology. 42(23_suppl). 71–71.

Toyota, M, Masaaki Miyo, Koichi Okuya, et al.. (2024). Cylindrical abdominoperineal resection for rectal cancer using the Hugo RAS system: The first ever case report for rectal cancer. Asian Journal of Endoscopic Surgery. 17(3). e13321–e13321. 4 indexed citations

Ishii, Masayuki, Koichi Okuya, Emi Akizuki, et al.. (2024). Hybrid Abdominal Robotic Approach Using the hinotori™ Surgical Robot System with Transanal Total Mesorectal Excision for Rectal Cancer: The First Ever Case Report for Rectal Cancer. SHILAP Revista de lepidopterología. 8(3). 253–258. 1 indexed citations

Okuya, Koichi, Emi Akizuki, Masaaki Miyo, et al.. (2024). A first report of right-hemicolectomy for ascending colon cancer in Japan with the da Vinci SP surgical robot system. Surgical Case Reports. 10(1). 125–125.

Misawa, Takeyuki, Takuya Saito, Shuji Takiguchi, et al.. (2023). Safety and short‐term outcomes of robotic‐assisted transabdominal preperitoneal repair for inguinal hernia in pioneering hospitals in Japan: A nationwide retrospective cohort study. Asian Journal of Endoscopic Surgery. 17(1). e13251–e13251. 3 indexed citations

Okita, Kenji, Koichi Okuya, Atsushi Hamabe, et al.. (2023). Development of an ultralow-latency communication system using shared internet access: promoting the implementation of telemedicine. Surgery Today. 53(4). 522–525. 2 indexed citations

Miura, Ryo, Koichi Okuya, Emi Akizuki, et al.. (2023). World-first report of low anterior resection for rectal cancer with the hinotori™ Surgical Robot System: a case report. SHILAP Revista de lepidopterología. 9(1). 156–156. 19 indexed citations

10.

Takemasa, Ichiro, Koichi Okuya, Kenji Okita, et al.. (2022). Feasibility of the semi-opened method of specimen resection for a circumferential resection margin in rectal cancer surgery: a multicenter study. Surgery Today. 52(9). 1275–1283. 4 indexed citations

11.

Hamabe, Atsushi, Masayuki Ishii, Koichi Okuya, et al.. (2022). Artificial intelligence–based technology for semi-automated segmentation of rectal cancer using high-resolution MRI. PLoS ONE. 17(6). e0269931–e0269931. 19 indexed citations

12.

Sato, Yu, Kenji Okita, Daisuke Kyuno, et al.. (2021). Snapshots of lymphatic pathways in colorectal cancer surgery using near-infrared fluorescence, in vivo and ex vivo. European Journal of Surgical Oncology. 47(12). 3130–3136. 21 indexed citations

13.

Itabashi, Michio, Koichi Okuya, Kenji Okita, et al.. (2021). Feasibility of Pooled One-Step Nucleic Acid Amplification for Molecular Staging of Pathologically Node-Negative Colon Cancer: A Prospective Multicenter Study. Annals of Surgical Oncology. 28(13). 8804–8812. 3 indexed citations

14.

Hamabe, Atsushi, Kenji Okita, Toshihiko Nishidate, et al.. (2021). Short-Term Outcomes with Standardized Transperineal Minimally Invasive Abdominoperineal Excision for Rectal Cancer. Journal of Gastrointestinal Surgery. 26(3). 713–719. 3 indexed citations

15.

Okuya, Koichi, Ichiro Takemasa, Tetsuhiro Tsuruma, et al.. (2020). Evaluation of negative-pressure wound therapy for surgical site infections after ileostomy closure in colorectal cancer patients: a prospective multicenter study. Surgery Today. 50(12). 1687–1693. 7 indexed citations

16.

Okita, Kenji, Masayuki Ishii, Atsushi Hamabe, et al.. (2020). Timing of indocyanine green injection prior to laparoscopic colorectal surgery for tumor localization: a prospective case series. Surgical Endoscopy. 35(2). 763–769. 29 indexed citations

17.

Ishii, Masayuki, Atsushi Hamabe, Kenji Okita, et al.. (2019). Efficacy of indocyanine green fluorescence angiography in preventing anastomotic leakage after laparoscopic colorectal cancer surgery. International Journal of Colorectal Disease. 35(2). 269–275. 47 indexed citations

18.

Okuya, Koichi, Yasuaki Tamura, Keita Saito, et al.. (2010). Spatiotemporal Regulation of Heat Shock Protein 90-Chaperoned Self-DNA and CpG-Oligodeoxynucleotide for Type I IFN Induction via Targeting to Static Early Endosome. The Journal of Immunology. 184(12). 7092–7099. 33 indexed citations

19.

Kutomi, Goro, Yasuaki Tamura, Koichi Okuya, et al.. (2009). Targeting to Static Endosome Is Required for Efficient Cross-Presentation of Endoplasmic Reticulum-Resident Oxygen-Regulated Protein 150-Peptide Complexes. The Journal of Immunology. 183(9). 5861–5869. 22 indexed citations

20.

Kimura, Yasutoshi, Mitsuhiro Mukaiya, Toshio Honma, et al.. (2004). Pancreas-Sparing Duodenectomy for a Recurrent Retroperitoneal Liposarcoma: Report of a Case. Surgery Today. 35(1). 91–93. 10 indexed citations

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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