Hirotoshi Ohta

2.3k total citations
62 papers, 1.8k citations indexed

About

Hirotoshi Ohta is a scholar working on Pulmonary and Respiratory Medicine, Epidemiology and Surgery. According to data from OpenAlex, Hirotoshi Ohta has authored 62 papers receiving a total of 1.8k indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Pulmonary and Respiratory Medicine, 20 papers in Epidemiology and 18 papers in Surgery. Recurrent topics in Hirotoshi Ohta's work include Gastric Cancer Management and Outcomes (12 papers), Metastasis and carcinoma case studies (12 papers) and Gastrointestinal Tumor Research and Treatment (7 papers). Hirotoshi Ohta is often cited by papers focused on Gastric Cancer Management and Outcomes (12 papers), Metastasis and carcinoma case studies (12 papers) and Gastrointestinal Tumor Research and Treatment (7 papers). Hirotoshi Ohta collaborates with scholars based in Japan, United States and India. Hirotoshi Ohta's co-authors include Yo Kato, Akio Yanagisawa, Makoto Seki, Masashi Ueno, Kaoru Azekura, Toshifusa Nakajima, Takashi Takahashi, Toshiki Matsubara, Norihiro Kokudo and Mitsuru Seishima and has published in prestigious journals such as Hepatology, Cancer and Journal of Clinical Microbiology.

In The Last Decade

Hirotoshi Ohta

60 papers receiving 1.7k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hirotoshi Ohta Japan 18 761 601 535 485 383 62 1.8k
L H Sobin United States 13 646 0.8× 492 0.8× 385 0.7× 411 0.8× 497 1.3× 21 1.7k
Shujiro Yazumi Japan 25 1.1k 1.4× 544 0.9× 320 0.6× 567 1.2× 344 0.9× 127 2.2k
Richard Sturgess United Kingdom 20 1.0k 1.3× 450 0.7× 366 0.7× 712 1.5× 501 1.3× 69 1.9k
Najib Haboubi United Kingdom 26 1.3k 1.7× 894 1.5× 177 0.3× 410 0.8× 347 0.9× 89 2.4k
Terry L. Gramlich United States 30 1.4k 1.9× 465 0.8× 349 0.7× 798 1.6× 758 2.0× 61 2.7k
Bita V. Naini United States 23 771 1.0× 343 0.6× 582 1.1× 230 0.5× 462 1.2× 71 1.6k
Jeremy Parfitt Canada 23 777 1.0× 645 1.1× 170 0.3× 497 1.0× 235 0.6× 43 1.8k
Louise Barbier France 24 870 1.1× 588 1.0× 490 0.9× 370 0.8× 440 1.1× 75 1.5k
Alex Kartheuser Belgium 25 948 1.2× 1.0k 1.7× 142 0.3× 380 0.8× 173 0.5× 86 2.0k
Masahiko Sugitani Japan 22 315 0.4× 240 0.4× 671 1.3× 259 0.5× 661 1.7× 132 2.0k

Countries citing papers authored by Hirotoshi Ohta

Since Specialization
Citations

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

Fields of papers citing papers by Hirotoshi Ohta

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hirotoshi Ohta

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

All Works

20 of 20 papers shown
1.
2.
Asai, Nobuhiro, Yuichi Shibata, Akiko Nakamura, et al.. (2023). Three Successfully Treated Cases of Lodderomyces elongisporus Fungemia: Case Reports and a Review of the Literature. Microorganisms. 11(4). 1076–1076. 3 indexed citations
3.
Seki, Makoto, Akio Yanagisawa, Hirotoshi Ohta, et al.. (2005). Clinicopathology of pancreaticobiliary maljunction: relationship between alterations in background biliary epithelium and neoplastic development. Journal of Hepato-Biliary-Pancreatic Surgery. 12(3). 254–262. 30 indexed citations
4.
Seki, Makoto, et al.. (2003). Pancreatic endocrine tumor : Pancreatographic features. Pancreas. 26(4). 400–401. 2 indexed citations
5.
Seki, Makoto, et al.. (2003). Extrapancreatic tumours in 9 cases : Differential diagnosis from primary pancreatic tumors with marked extrapancreatic growth based on imaging studies. Pancreas. 27(1). 91–92. 1 indexed citations
6.
Yajima, Hiroshi, Norihiro Kokudo, Takashi Takahashi, et al.. (2002). A Case of Appendiceal Mucocele Diagnosed Preoperatively by Ultrasonography. Journal of Medical Ultrasonics. 29(2). 1 indexed citations
7.
Kokudo, Norihiro, Hiroshi Kimura, Hirofumi Yamamoto, et al.. (2000). Hepatic parenchymal transection using ultrasonic coagulating shears: a preliminary report. Journal of Hepato-Biliary-Pancreatic Surgery. 7(3). 295–298. 16 indexed citations
8.
Kobayashi, Masanori, Shigekazu Ohyama, Keiichiro Ohta, et al.. (1999). Regional lymphatic metastasis in early gastric cancer.. The Japanese Journal of Gastroenterological Surgery. 32(8). 2072–2076. 2 indexed citations
9.
Fujimoto, Takeo, et al.. (1999). UNUSUAL LATE EXTRAPULMONARY METASTASIS IN OSTEOSARCOMA. Pediatric Hematology and Oncology. 16(6). 545–549. 9 indexed citations
10.
Kokudo, Norihiro, Makoto Seki, Hirotoshi Ohta, et al.. (1998). Effects of systemic and regional chemotherapy after hepatic resection for colorectal metastases. Annals of Surgical Oncology. 5(8). 706–712. 30 indexed citations
11.
Seki, Makoto, Eiju Tsuchiya, Masaharu Hori, et al.. (1998). Pancreatic metastasis from a lung cancer. International Journal of Pancreatology. 24(1). 55–59. 12 indexed citations
12.
Nishi, Mitsumasa, et al.. (1995). Chronological changes of characteristics of early gastric cancer and therapy: Experience in the Cancer Institute Hospital of Tokyo, 1950?1994. Journal of Cancer Research and Clinical Oncology. 121(9-10). 535–541. 46 indexed citations
13.
Nakajima, Toshifusa, Hirotoshi Ohta, Hirofumi Yamada, et al.. (1993). Clinicopathological Study of Gastric Mucosal Cancer with Lymph Node Metastasis.. The Japanese Journal of Gastroenterological Surgery. 26(3). 796–802. 2 indexed citations
14.
Kawaguchi, Tokuichi, Michiko Miyaki, Tohru Masui, et al.. (1991). Establishment and Characterization of an Epithelial Cell Line with Quasi‐normal Chromosomes from a Tubular Adenoma of a Familial Polyposis Coli Patient. Japanese Journal of Cancer Research. 82(2). 138–141. 8 indexed citations
15.
Takagi, Kunio, et al.. (1988). Clinicopathological studies of elevated early gastric cancer showing histologicaly undifferentiated adenocarcinoma.. The Japanese Journal of Gastroenterological Surgery. 21(8). 2094–2098. 2 indexed citations
16.
Kanai, Michio, Takashi Takahashi, Takaaki Ikeda, et al.. (1985). A STUDY OF RECTUM CANCER BY AGE. The Japanese Journal of Gastroenterological Surgery. 18(4). 799–808. 4 indexed citations
17.
Noguchi, Yoshikazu, Hirotoshi Ohta, Kunio Takagi, et al.. (1983). Studies on proximal gastrectomy against gastric carcinoma -indications for surgery. The Japanese Journal of Gastroenterological Surgery. 16(8). 1470–1476. 2 indexed citations
18.
Ohta, Hirotoshi, et al.. (1981). STUDIES OF THE 1000 CASES OF EARLY GASTRIC CANCER. The Japanese Journal of Gastroenterological Surgery. 14(10). 1399–1408. 11 indexed citations
19.
Ohta, Hirotoshi, et al.. (1980). SURGICAL TREATMENT OF CARCINOMA AT THE GASTRO-ESOPHAGEAL JUNCTION. The Japanese Journal of Gastroenterological Surgery. 13(3). 165–171. 1 indexed citations
20.
Ohta, Hirotoshi, Takashi Takahashi, & Tamaki KAJITANI. (1980). ON SURGICAL COMPLICATIONS AFTER SPHINCTER PRESERVING OPERATIONS FOR RECTAL CANCER. The Japanese Journal of Gastroenterological Surgery. 13(7). 874–879. 1 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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