Hiroki Ochiai

2.3k total citations
61 papers, 1.7k citations indexed

About

Hiroki Ochiai is a scholar working on Oncology, Surgery and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Hiroki Ochiai has authored 61 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 36 papers in Oncology, 30 papers in Surgery and 16 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Hiroki Ochiai's work include Colorectal Cancer Surgical Treatments (18 papers), Colorectal and Anal Carcinomas (11 papers) and Colorectal Cancer Treatments and Studies (11 papers). Hiroki Ochiai is often cited by papers focused on Colorectal Cancer Surgical Treatments (18 papers), Colorectal and Anal Carcinomas (11 papers) and Colorectal Cancer Treatments and Studies (11 papers). Hiroki Ochiai collaborates with scholars based in Japan, United States and Netherlands. Hiroki Ochiai's co-authors include Shunsuke Tsukamoto, Dai Shida, Yukihide Kanemitsu, Peigen Huang, Dan G. Duda, Rakesh R. Ramjiawan, Rakesh K. Jain, Shuji Kitahara, Tai Hato and Andrew X. Zhu and has published in prestigious journals such as SHILAP Revista de lepidopterología, Hepatology and Macromolecules.

In The Last Decade

Hiroki Ochiai

55 papers receiving 1.7k citations

Peers

Hiroki Ochiai

ONCOL

SURGE

PRM

IMMUN

Ruth Vera Spain

Hiroyuki Yamaguchi Japan

Zhi Peng China

Aurélie Bertaut France

Francesco Leone Italy

Maria A. González-Carmona Germany

Minkyu Jung South Korea

Maria Giulia Zampino Italy

Antonia Digklia Switzerland

Ruth Vera Spain

Hiroki Ochiai

1.3k ×1.5

ONCOL

357 ×0.7

SURGE

394 ×1.0

PRM

347 ×1.0

IMMUN

252 ×0.8

Citations per year, relative to Hiroki Ochiai Hiroki Ochiai (= 1×) peers Ruth Vera

Countries citing papers authored by Hiroki Ochiai

Since Specialization

Citations

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

Fields of papers citing papers by Hiroki Ochiai

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hiroki Ochiai

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Hayama, Tamuro, Hiroki Ochiai, Tsuyoshi Ozawa, et al.. (2025). High systemic inflammation response index (SIRI) level as a prognostic factor for colorectal cancer patients after curative surgery: a single-center retrospective analysis. Scientific Reports. 15(1). 1008–1008. 4 indexed citations

Koide, Hiroyuki, Shinya Hirata, Hiroki Ochiai, et al.. (2025). In vivo delivery of antioxidant enzymes with multi-functionalized lipid nanoparticles for sepsis therapy. Journal of Controlled Release. 382. 113734–113734. 1 indexed citations

Hayama, Tamuro, Hiroki Ochiai, Keijiro Nozawa, et al.. (2024). A case of rectal cancer complicated with segmental arterial mediolysis (SAM) safely treated with curative resection - A case report. International Journal of Surgery Case Reports. 116(C). 109418–109418.

Ochiai, Hiroki, et al.. (2023). Long‐term oncological outcome of reduced‐port laparoscopic surgery (single‐incision plus one port) as a technical option for rectal cancer. Asian Journal of Endoscopic Surgery. 16(4). 687–694. 1 indexed citations

Komatsu, Toru, Hiroyuki Matsuzaki, Keisuke Hata, et al.. (2023). Development of fluorogenic substrates for colorectal tumor-related neuropeptidases for activity-based diagnosis. Chemical Science. 14(17). 4495–4499. 6 indexed citations

Hayama, Tamuro, Kotaro Hama, Tsuyoshi Ozawa, et al.. (2023). Ceramide synthase CERS4 gene downregulation is associated with KRAS mutation in colorectal cancer. Scientific Reports. 13(1). 16249–16249. 6 indexed citations

Yahagi, Masashi, Yoshiyuki Ishii, Hiroki Ochiai, et al.. (2021). Usefulness of laparoscopic surgery and preoperative examinations for chronic recurrent small bowel obstruction. Surgery Today. 51(5). 807–813. 2 indexed citations

Ochiai, Hiroki, et al.. (2020). Thermally Activated Delayed Fluorescence Benzyl Cellulose Derivatives for Nondoped Organic Light-Emitting Diodes. Macromolecules. 53(8). 2864–2873. 17 indexed citations

Tsukamoto, Shunsuke, et al.. (2018). Improving Selection for Resection of Synchronous Para-Aortic Lymph Node Metastases in Colorectal Cancer. Digestive Surgery. 36(5). 369–375. 28 indexed citations

10.

Shida, Dai, Yuka Ahiko, Taro Tanabe, et al.. (2018). Shorter survival in adolescent and young adult patients, compared to adult patients, with stage IV colorectal cancer in Japan. BMC Cancer. 18(1). 334–334. 23 indexed citations

11.

Kanemitsu, Yukihide, et al.. (2018). ROK study-C (Rainbow of KIBOU study-colorectum): a colorectal cancer survivor cohort study on food, nutrition, physical activity, psychosocial factors and its influences on colorectal cancer recurrence, survival and quality of life in Japan. BMC Cancer. 18(1). 953–953. 5 indexed citations

12.

Nakanishi, Koki, Dai Shida, Shunsuke Tsukamoto, et al.. (2017). Multiple rapidly growing desmoid tumors that were difficult to distinguish from recurrence of rectal cancer. World Journal of Surgical Oncology. 15(1). 180–180. 10 indexed citations

13.

Shida, Dai, Gen Iinuma, Hiroki Ochiai, et al.. (2017). Preoperative T staging using CT colonography with multiplanar reconstruction for very low rectal cancer. BMC Cancer. 17(1). 764–764. 13 indexed citations

14.

Koyanagi, Kazuo, Soji Ozawa, Junya Oguma, et al.. (2016). Blood flow speed of the gastric conduit assessed by indocyanine green fluorescence. Medicine. 95(30). e4386–e4386. 86 indexed citations

15.

Kanemitsu, Yukihide, Dai Shida, Shunsuke Tsukamoto, et al.. (2014). [Treatment for locally recurrent rectal cancer].. PubMed. 111(11). 2113–20.

16.

Ishii, Yoshiyuki, Hiroki Ochiai, Kazumasa Fukuda, et al.. (2014). Cetuximab-mediated ADCC activity is correlated with the cell surface expression level of EGFR but not with the KRAS/BRAF mutational status in colorectal cancer. Oncology Reports. 31(5). 2115–2122. 42 indexed citations

17.

Ishii, Yoshiyuki, Hirotoshi Hasegawa, Takashi Endo, et al.. (2012). A case of adenocarcinoma on an ileostomy site 35 years after surgery for familial adenomatous polyposis coli with anal canal cancer. Nihon Daicho Komonbyo Gakkai Zasshi. 65(3). 118–123. 1 indexed citations

18.

Ochiai, Hiroki, Atsushi Shimada, Akira Matsui, et al.. (2010). Prolapse of Intussusception through the Anus as a Result of Sigmoid Colon Cancer. Case Reports in Gastroenterology. 4(3). 346–350. 12 indexed citations

19.

Tsuruta, Masashi, Hirotoshi Hasegawa, Yoshiyuki Ishii, et al.. (2009). Hand-assisted Versus Conventional Laparoscopic Restorative Proctocolectomy for Ulcerative Colitis. Surgical Laparoscopy Endoscopy & Percutaneous Techniques. 19(1). 52–56. 13 indexed citations

20.

Naganuma, Makoto, Atsushi Sakuraba, Tadakazu Hisamatsu, et al.. (2008). Efficacy of infliximab for induction and maintenance of remission in intestinal Behçetʼs disease. Inflammatory Bowel Diseases. 14(9). 1259–1264. 57 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.

Explore authors with similar magnitude of impact