Ken Haruma

721 total citations
25 papers, 584 citations indexed

About

Ken Haruma is a scholar working on Surgery, Gastroenterology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Ken Haruma has authored 25 papers receiving a total of 584 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Surgery, 13 papers in Gastroenterology and 11 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Ken Haruma's work include Helicobacter pylori-related gastroenterology studies (10 papers), Gastric Cancer Management and Outcomes (8 papers) and Gastrointestinal Tumor Research and Treatment (7 papers). Ken Haruma is often cited by papers focused on Helicobacter pylori-related gastroenterology studies (10 papers), Gastric Cancer Management and Outcomes (8 papers) and Gastrointestinal Tumor Research and Treatment (7 papers). Ken Haruma collaborates with scholars based in Japan and Australia. Ken Haruma's co-authors include Goro Kajiyama, Koji Sumii, Tomoari Kamada, Goro Kajiyama, Shinji Tanaka, Fumio Shimamoto, Kunihiko Komoto, Shinji Tanaka, Carlos Roberto Teixeira and Masaharu Yoshihara and has published in prestigious journals such as Cancer, Biochemical and Biophysical Research Communications and The American Journal of Gastroenterology.

In The Last Decade

Ken Haruma

23 papers receiving 568 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ken Haruma Japan 11 377 306 174 149 69 25 584
Sumitaka Arima Japan 11 312 0.8× 162 0.5× 139 0.8× 53 0.4× 37 0.5× 44 497
Masaaki Inomata Japan 10 206 0.5× 193 0.6× 164 0.9× 103 0.7× 28 0.4× 20 466
Yasuyuki Asada Japan 11 541 1.4× 253 0.8× 420 2.4× 35 0.2× 38 0.6× 31 667
Ron Lavy Israel 12 176 0.5× 136 0.4× 147 0.8× 75 0.5× 74 1.1× 33 393
Yukihiko Jo Japan 9 193 0.5× 81 0.3× 154 0.9× 45 0.3× 37 0.5× 16 433
Takuzo Ishidate Japan 12 290 0.8× 157 0.5× 221 1.3× 25 0.2× 93 1.3× 29 463
Masaru Kimata Japan 10 191 0.5× 156 0.5× 92 0.5× 117 0.8× 34 0.5× 33 356
Tatsuo Oshiro Japan 13 285 0.8× 495 1.6× 164 0.9× 237 1.6× 77 1.1× 22 701
A Wee Singapore 13 217 0.6× 78 0.3× 50 0.3× 113 0.8× 50 0.7× 23 403
M Mastrorilli Italy 9 220 0.6× 122 0.4× 258 1.5× 22 0.1× 22 0.3× 16 374

Countries citing papers authored by Ken Haruma

Since Specialization
Citations

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

Fields of papers citing papers by Ken Haruma

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ken Haruma

This figure shows the co-authorship network connecting the top 25 collaborators of Ken Haruma. A scholar is included among the top collaborators of Ken Haruma 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 Ken Haruma. Ken Haruma 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.
Konishi, Takako, Noriaki Manabe, Ken Haruma, et al.. (2024). A case of hemorrhagic Meckel's diverticulum diagnosed by transabdominal ultrasound. Clinical Journal of Gastroenterology. 17(5). 876–882. 1 indexed citations
3.
Shimizu, Kayoko, Hideki Koga, Masaharu Takeda, et al.. (2003). CASE REPORT: Suddenly Accelerated Growth of Gastrointestinal Stromal Tumor of Remnant Stomach. Digestive Diseases and Sciences. 48(6). 1106–1109. 2 indexed citations
4.
Haruma, Ken, et al.. (2001). Protective Effect of Ammonia Against Reflux Esophagitis in Rats. Digestive Diseases and Sciences. 46(5). 976–980. 6 indexed citations
5.
Hiyama, Toru, Ken Haruma, Yasuhiko Kitadai, et al.. (2001). B-Cell monoclonality in Helicobacter pylori -associated chronic atrophic gastritis. Archiv für Pathologische Anatomie und Physiologie und für Klinische Medicin. 438(3). 232–237. 18 indexed citations
6.
Nakamura, Masaru, et al.. (2001). Duodenogastric reflux is associated with antral metaplastic gastritis. Gastrointestinal Endoscopy. 53(1). 53–59. 23 indexed citations
7.
Chen, Xing, Ken Haruma, Tomoari Kamada, et al.. (2001). A low 13 C-urea breath test value is associated with increased risk of gastric cancer. Journal of Gastroenterology. 36(9). 601–605. 10 indexed citations
8.
Haruma, Ken, et al.. (2000). Enhanced tumorigenicity of insulinoma by X‐irradiation of the gastric regions in Sprague–Dawley male rats. Journal of Gastroenterology and Hepatology. 15(7). 766–770. 3 indexed citations
9.
Haruma, Ken, et al.. (2000). Evaluation of lower oesophageal sphincter pressure using endoscopic manometric sleeve assembly. Journal of Gastroenterology and Hepatology. 15(2). 121–126. 9 indexed citations
10.
Haruma, Ken. (2000). TREND TOWARD A REDUCED PREVALENCE OF HELICOBACTER PYLORI INFECTION, CHRONIC GASTRITIS, AND GASTRIC CANCER IN JAPAN. Gastroenterology Clinics of North America. 29(3). 623–631. 18 indexed citations
11.
Aogi, Kenjiro, Toshihiro Hirai, Hidenori Mukaida, et al.. (1999). Laparoscopic resection of submucosal gastric tumors. Surgery Today. 29(2). 102–106. 48 indexed citations
12.
Haruma, Ken, et al.. (1999). Development and validation of an ultrasonographic activity index of Crohnʼs disease. European Journal of Gastroenterology & Hepatology. 11(9). 1007–1012. 66 indexed citations
13.
Komoto, Kunihiko, Ken Haruma, Tomoari Kamada, et al.. (1998). Helicobacter pylori Infection and Gastric Neoplasia: Correlations With Histological Gastritis and Tumor Histology. The American Journal of Gastroenterology. 93(8). 1271–1276. 136 indexed citations
14.
Tanaka, Shinji, Ken Haruma, Carlos Roberto Teixeira, et al.. (1995). Endoscopic treatment of submucosal invasive colorectal carcinoma with special reference to risk factors for lymph node metastasis. Journal of Gastroenterology. 30(6). 710–717. 135 indexed citations
15.
Kawanishi, Masahiro, et al.. (1995). Significance of rapid urease test for identification ofHelicobacter pylori in comparison with histological and culture studies. Journal of Gastroenterology. 30(1). 16–20. 11 indexed citations
16.
17.
Haruma, Ken, et al.. (1992). Flow cytometric DNA analysis of gastric smooth muscle tumors. Cancer. 70(8). 2031–2034. 9 indexed citations
18.
Haruma, Ken, Takehiko Suzuki, Toshitaka Tsuda, et al.. (1991). Evaluation of tumor growth rate in patients with early gastric carcinoma of the elevated type. Abdominal Imaging. 16(1). 289–292. 30 indexed citations
19.
Tari, Akira, Yukitaka Miyachi, Koji Sumii, et al.. (1988). ?-Endorphin-like immunoreactivity in normal mucosa, muscle layer, adenocarcinoma, and polyp of the colon. Digestive Diseases and Sciences. 33(4). 429–434. 4 indexed citations
20.
Tari, Akira, et al.. (1987). Effect of cisapride on the concentrations of β-endorphinlike immunoreactivity and substance P-like immunoreactivity in the rat gastrointestinal tract. Biochemical and Biophysical Research Communications. 147(3). 1162–1169. 3 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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