Keiichi Ashikari

855 total citations
41 papers, 577 citations indexed

About

Keiichi Ashikari is a scholar working on Pulmonary and Respiratory Medicine, Surgery and Gastroenterology. According to data from OpenAlex, Keiichi Ashikari has authored 41 papers receiving a total of 577 indexed citations (citations by other indexed papers that have themselves been cited), including 25 papers in Pulmonary and Respiratory Medicine, 17 papers in Surgery and 16 papers in Gastroenterology. Recurrent topics in Keiichi Ashikari's work include Gastric Cancer Management and Outcomes (24 papers), Metastasis and carcinoma case studies (13 papers) and Colorectal Cancer Screening and Detection (11 papers). Keiichi Ashikari is often cited by papers focused on Gastric Cancer Management and Outcomes (24 papers), Metastasis and carcinoma case studies (13 papers) and Colorectal Cancer Screening and Detection (11 papers). Keiichi Ashikari collaborates with scholars based in Japan, Italy and United States. Keiichi Ashikari's co-authors include Atsushi Nakajima, Takuma Higurashi, Hideyuki Chiba, Noboru Misawa, Jun Arimoto, Jun Tachikawa, Hidenori Ohkubo, Akiko Fuyuki, Tsutomu Yoshihara and Hiroki Kuwabara and has published in prestigious journals such as SHILAP Revista de lepidopterología, Scientific Reports and Gastrointestinal Endoscopy.

In The Last Decade

Keiichi Ashikari

38 papers receiving 558 citations

Peers

Keiichi Ashikari

PRM

SURGE

ONCOL

GASTR

Noboru Misawa Japan

Matthew D. Egberg United States

Yong Cheol Jeon South Korea

D. Nageshwar Reddy India

Aharon Halak Israel

Barbara Porowska Italy

Frank A.J.A. Bodewes Netherlands

A. Caro-Patón Spain

Mohammad Minakari Iran

Po‐Jen Hsiao Taiwan

Noboru Misawa Japan

Keiichi Ashikari

95 ×0.3

PRM

144 ×0.6

SURGE

139 ×0.7

ONCOL

101 ×0.6

GASTR

63 ×1.0

Citations per year, relative to Keiichi Ashikari Keiichi Ashikari (= 1×) peers Noboru Misawa

Countries citing papers authored by Keiichi Ashikari

Since Specialization

Citations

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

Fields of papers citing papers by Keiichi Ashikari

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Keiichi Ashikari

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

Chiba, Hideyuki, Ken Ohata, Keiichi Ashikari, et al.. (2024). Effectiveness of Strategy-Focused Training in Colorectal Endoscopic Submucosal Dissection: A Retrospective Observational Study. Digestive Diseases and Sciences. 69(7). 2370–2380.

Yoshihara, Tsutomu, Takaomi Kessoku, Noboru Misawa, et al.. (2024). Efficacy and safety of linaclotide in treatment‐resistant chronic constipation: A multicenter, open‐label study. Neurogastroenterology & Motility. 36(12). e14938–e14938.

Misawa, Noboru, Masaru Matsumoto, Momoko Tsuda, et al.. (2024). Diagnostic Ability of Ultrasonography Compared with Computed Tomography for Assessing Rectal Feces. SHILAP Revista de lepidopterología. 8(2). 126–131. 4 indexed citations

Misawa, Noboru, Keiichi Ashikari, Shingo Kato, et al.. (2023). Changes in the Number of Gastrointestinal Cancers and Stage at Diagnosis with COVID-19 Pandemic in Japan: A Multicenter Cohort Study. Cancers. 15(17). 4410–4410. 9 indexed citations

Ohkubo, Hidenori, Takaomi Kessoku, Kosuke Tanaka, et al.. (2023). Efficacy and safety of rifaximin in patients with chronic intestinal pseudo-obstruction: a randomized, double-blind, placebo-controlled, phase II—a exploratory trial. Bioscience of Microbiota Food and Health. 43(2). 135–144. 1 indexed citations

Higurashi, Takuma, Keiichi Ashikari, Yusuke Saigusa, et al.. (2022). Leukotriene Receptor Antagonist Therapy for the Chemoprevention of Human Rectal Aberrant Crypt Foci: Nonrandomized, Open-Label, Controlled Trial. Cancer Prevention Research. 15(10). 661–668. 2 indexed citations

Chiba, Hideyuki, Ken Ohata, Jun Tachikawa, et al.. (2022). The feasibility of endoscopic submucosal dissection for colorectal lesions larger than 10 cm. Surgical Endoscopy. 36(7). 5348–5355. 9 indexed citations

Chiba, Hideyuki, Ken Ohata, Jun Tachikawa, et al.. (2022). The feasibility and safety of endoscopic submucosal dissection of gastric lesions larger than 5 cm. Gastric Cancer. 25(6). 1031–1038. 2 indexed citations

Higurashi, Takuma, Keiichi Ashikari, Noboru Misawa, et al.. (2022). Comparison of the diagnostic performance of NBI, Laser-BLI and LED-BLI: a randomized controlled noninferiority trial. Surgical Endoscopy. 36(10). 7577–7587. 15 indexed citations

10.

Takano, Koji, Keiichi Ashikari, Noboru Misawa, et al.. (2022). Clinicopathological features of endoscopically treated early gastric cancer with lymphovascular infiltration. Journal of Cancer Research and Clinical Oncology. 149(9). 5781–5790. 2 indexed citations

11.

Tachikawa, Jun, Hideyuki Chiba, Naoya Okada, et al.. (2021). Impact of obesity in colorectal endoscopic submucosal dissection: single-center retrospective cohort study. BMC Gastroenterology. 21(1). 74–74. 4 indexed citations

12.

Arimoto, Jun, Hideyuki Chiba, Keiichi Ashikari, et al.. (2020). Safety and efficacy of cold snare polypectomy for pedunculated (Ip) polyps measuring less than 10 mm in diameter. International Journal of Colorectal Disease. 35(5). 859–867. 15 indexed citations

13.

Misawa, Noboru, Takuma Higurashi, Jun Tachikawa, et al.. (2020). Clinical impact of evaluation of frailty in endoscopic submucosal dissection for early gastric cancer in elderly patients. Geriatrics and gerontology international. 20(5). 461–466. 17 indexed citations

14.

Arimoto, Jun, Ken Ohata, Hideyuki Chiba, et al.. (2020). Evaluation of colorectal endoscopic submucosal dissection using a multifunctional snare: a prospective clinical feasibility study (with videos). Gastrointestinal Endoscopy. 93(3). 671–678. 5 indexed citations

15.

Higurashi, Takuma, Jun Arimoto, Keiichi Ashikari, et al.. (2020). The efficacy of a leukotriene receptor antagonist in the treatment of human rectal aberrant crypt foci: a nonrandomized, open-label, controlled trial. BMC Cancer. 20(1). 770–770. 3 indexed citations

16.

Chiba, Hideyuki, Jun Tachikawa, Jun Arimoto, et al.. (2019). Predictive Factors of Mild and Severe Fibrosis in Colorectal Endoscopic Submucosal Dissection. Digestive Diseases and Sciences. 65(1). 232–242. 27 indexed citations

17.

Arimoto, Jun, Hideyuki Chiba, Takuma Higurashi, et al.. (2019). Risk factors for incomplete polyp resection after cold snare polypectomy. International Journal of Colorectal Disease. 34(9). 1563–1569. 7 indexed citations

18.

Chiba, Hideyuki, Ken Ohata, Jun Tachikawa, et al.. (2018). Delayed Bleeding After Colorectal Endoscopic Submucosal Dissection: When Is Emergency Colonoscopy Needed?. Digestive Diseases and Sciences. 64(3). 880–887. 30 indexed citations

19.

Chiba, Hideyuki, Jun Tachikawa, Daisuke Kurihara, et al.. (2017). Successful endoscopic submucosal dissection of colon cancer with severe fibrosis after tattooing. Clinical Journal of Gastroenterology. 10(5). 426–430. 10 indexed citations

20.

Arimoto, Jun, Takuma Higurashi, Hideyuki Chiba, et al.. (2017). Continued Use of a Single Antiplatelet Agent Does Not Increase the Risk of Delayed Bleeding After Colorectal Endoscopic Submucosal Dissection. Digestive Diseases and Sciences. 63(1). 218–227. 28 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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