Kazuma Okamoto

1.2k total citations
75 papers, 726 citations indexed

About

Kazuma Okamoto is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Cardiology and Cardiovascular Medicine. According to data from OpenAlex, Kazuma Okamoto has authored 75 papers receiving a total of 726 indexed citations (citations by other indexed papers that have themselves been cited), including 43 papers in Surgery, 38 papers in Pulmonary and Respiratory Medicine and 25 papers in Cardiology and Cardiovascular Medicine. Recurrent topics in Kazuma Okamoto's work include Cardiac Valve Diseases and Treatments (19 papers), Gastric Cancer Management and Outcomes (13 papers) and Metastasis and carcinoma case studies (13 papers). Kazuma Okamoto is often cited by papers focused on Cardiac Valve Diseases and Treatments (19 papers), Gastric Cancer Management and Outcomes (13 papers) and Metastasis and carcinoma case studies (13 papers). Kazuma Okamoto collaborates with scholars based in Japan, United States and United Kingdom. Kazuma Okamoto's co-authors include Hideyuki Shimizu, Akihiro Yoshitake, Mikihiko Kudo, Ryohei Yozu, Eigo Otsuji, Hiroto Kitahara, Keiichi Fukuda, Shunichiro Miyoshi, Satoshi Ogawa and Kaoru Segawa and has published in prestigious journals such as Journal of Clinical Oncology, The American Journal of Cardiology and British Journal of Cancer.

In The Last Decade

Kazuma Okamoto

69 papers receiving 706 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Kazuma Okamoto Japan 14 381 246 233 171 119 75 726
Camille Brasselet France 13 421 1.1× 347 1.4× 269 1.2× 77 0.5× 87 0.7× 37 929
Rayyan Hemetsberger Austria 14 482 1.3× 268 1.1× 178 0.8× 61 0.4× 77 0.6× 55 703
Rony Atoui Canada 16 337 0.9× 315 1.3× 154 0.7× 116 0.7× 77 0.6× 42 707
J.C. Alonso Farto Spain 10 242 0.6× 127 0.5× 118 0.5× 62 0.4× 80 0.7× 30 570
Varun Kapila Canada 11 217 0.6× 242 1.0× 87 0.4× 135 0.8× 116 1.0× 17 483
H.E. Mewhort Canada 17 346 0.9× 518 2.1× 406 1.7× 172 1.0× 182 1.5× 26 957
Can Yerebakan Germany 17 588 1.5× 297 1.2× 298 1.3× 430 2.5× 94 0.8× 101 1.1k
Ricardo Sanz‐Ruiz Spain 18 559 1.5× 439 1.8× 112 0.5× 92 0.5× 171 1.4× 68 945
Sina L. Moainie United States 17 650 1.7× 640 2.6× 157 0.7× 113 0.7× 100 0.8× 34 1.1k
Łukasz Tekieli Poland 13 189 0.5× 261 1.1× 363 1.6× 186 1.1× 47 0.4× 60 567

Countries citing papers authored by Kazuma Okamoto

Since Specialization
Citations

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

Fields of papers citing papers by Kazuma Okamoto

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kazuma Okamoto

This figure shows the co-authorship network connecting the top 25 collaborators of Kazuma Okamoto. A scholar is included among the top collaborators of Kazuma Okamoto 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 Kazuma Okamoto. Kazuma Okamoto 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.
Shimokawa, Tomoki, Hiraku Kumamaru, Noboru Motomura, et al.. (2024). Minimally invasive cardiac surgeries in 2021: annual report by Japanese society of minimally invasive cardiac surgery. General Thoracic and Cardiovascular Surgery. 73(2). 88–95. 1 indexed citations
2.
Nishi, Hiroyuki, Kazuma Okamoto, Hitoshi Yokoyama, et al.. (2023). A Novel Method of Real-Time Assessment for Coronary Artery Anastomosis Skill. Annals of Thoracic and Cardiovascular Surgery. 30(1). n/a–n/a.
3.
Okamoto, Kazuma, et al.. (2018). Right heart failure caused by direct pressure of distal arch aneurysm. General Thoracic and Cardiovascular Surgery. 67(2). 263–265. 1 indexed citations
4.
Kobayashi, Toshiyuki, Atsushi Shiozaki, Hitoshi Fujiwara, et al.. (2018). [Two Cases of Local Recurrence in the Descending Aorta after Radical Esophagectomy, Resected after Placement of a Thoracic Endovascular Stent].. PubMed. 45(13). 2372–2374. 1 indexed citations
5.
Okamoto, Kazuma. (2018). Minimally invasive cardiac surgery in Japan: history and current status. General Thoracic and Cardiovascular Surgery. 66(9). 504–508. 6 indexed citations
6.
Kitahara, Hiroto, Hiroshi Yagi, Kazuki Tajima, et al.. (2016). Heterotopic transplantation of a decellularized and recellularized whole porcine heart. Interactive Cardiovascular and Thoracic Surgery. 22(5). 571–579. 71 indexed citations
7.
Kitahara, Hiroto, Mitsushige Murata, Kazuma Okamoto, et al.. (2016). Preservation of Mobility of the Posterior Mitral Leaflet After Mitral Valve Repair With Neochordae Using Loop Technique. Circulation Journal. 80(3). 663–667. 3 indexed citations
8.
Shoda, Katsutoshi, Shuhei Komatsu, Daisuke Ichikawa, et al.. (2015). [Thrombocytosis Associated with Poor Prognosis in Patients with Gastric Cancer].. PubMed. 42(12). 1980–2. 10 indexed citations
9.
Kitahara, Hiroto, Kazuma Okamoto, Mikihiko Kudo, et al.. (2015). Alternative peripheral perfusion strategies for safe cardiopulmonary bypass in atrial septal defect closure via a right minithoracotomy approach. General Thoracic and Cardiovascular Surgery. 64(3). 131–137. 10 indexed citations
10.
Kitahara, Hiroto, et al.. (2015). Management of Right Atrial Hemangioma in a Patient With Antithrombin Deficiency. The Annals of Thoracic Surgery. 99(3). e53–e55. 1 indexed citations
11.
Komatsu, Shuhei, Daisuke Ichikawa, Takeshi Kubota, et al.. (2014). [Clinical significance of ascites on preoperative MDCT in patients with advanced gastric cancer].. PubMed. 41(12). 2229–31. 1 indexed citations
12.
Kudo, Mikihiko, Ryohei Yozu, & Kazuma Okamoto. (2014). Recurrent Mitral Regurgitation Due to Ruptured ePTFE Neochordae after Mitral Valve Repair by the Loop Technique: A Report of Case. Annals of Thoracic and Cardiovascular Surgery. 20(Supplement). 746–749. 4 indexed citations
13.
Miyamae, Mahito, Shuhei Komatsu, Daisuke Ichikawa, et al.. (2013). [Discrepancies in the histological grade of submucosal gastric carcinoma between biopsy and postoperative resected specimens].. PubMed. 40(12). 2292–4. 1 indexed citations
14.
Aeba, Ryo, Mikihiko Kudo, Kazuma Okamoto, & Ryohei Yozu. (2012). Bridging Annuloplasty for Left Atrioventricular Valve of Partial Atrioventricular Septal Defect. The Annals of Thoracic Surgery. 93(5). e137–e139. 2 indexed citations
15.
Kawaguchi, Tsutomu, Toshiya Ochiai, Hisashi Ikoma, et al.. (2011). Prognostic impact of histological blood vessel invasion in patients with ampullary adenocarcinoma.. PubMed. 57(104). 1347–50. 2 indexed citations
16.
Okamoto, Kazuma, et al.. (2006). Left Ventricular Outflow Obstruction After Mitral Valve Replacement Preserving Native Anterior Leaflet. The Annals of Thoracic Surgery. 82(2). 735–737. 13 indexed citations
17.
Otsuji, Eigo, et al.. (1997). Decreased Renal Accumulation of Biotinylated Chimeric Monoclonal Antibody‐Neocarzinostatin Conjugate after Administration of Avidin. Japanese Journal of Cancer Research. 88(2). 205–212. 1 indexed citations
18.
Kitamura, Kazuya, Toshiharu Yamaguchi, Kazuhiro Yamamoto, et al.. (1997). Early gastric cancer mimicking advanced gastric cancer. British Journal of Cancer. 75(12). 1769–1773. 7 indexed citations
19.
Otsuji, Eigo, et al.. (1995). The effect of intravenous and intra-tumoural chemotherapy using a monoclonal antibody—Drug conjugate in a xenograft model of pancreatic cancer. European Journal of Surgical Oncology. 21(1). 61–65. 10 indexed citations
20.
Ishimitsu, T, et al.. (1991). [Mitral regurgitation due to redundant chordae].. PubMed. 25. 95–102; discussion 103. 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Camille Brasselet Breakdown of academic impact, for papers by Rayyan Hemetsberger Breakdown of academic impact, for papers by Rony Atoui Breakdown of academic impact, for papers by J.C. Alonso Farto Breakdown of academic impact, for papers by Varun Kapila Breakdown of academic impact, for papers by H.E. Mewhort Breakdown of academic impact, for papers by Can Yerebakan Breakdown of academic impact, for papers by Ricardo Sanz‐Ruiz Breakdown of academic impact, for papers by Sina L. Moainie Breakdown of academic impact, for papers by Łukasz Tekieli
Rankless by CCL
2026