Eiki Ojima

591 total citations
26 papers, 463 citations indexed

About

Eiki Ojima is a scholar working on Oncology, Surgery and Molecular Biology. According to data from OpenAlex, Eiki Ojima has authored 26 papers receiving a total of 463 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Oncology, 12 papers in Surgery and 6 papers in Molecular Biology. Recurrent topics in Eiki Ojima's work include Colorectal Cancer Treatments and Studies (5 papers), Colorectal Cancer Surgical Treatments (5 papers) and Cancer, Hypoxia, and Metabolism (3 papers). Eiki Ojima is often cited by papers focused on Colorectal Cancer Treatments and Studies (5 papers), Colorectal Cancer Surgical Treatments (5 papers) and Cancer, Hypoxia, and Metabolism (3 papers). Eiki Ojima collaborates with scholars based in Japan and India. Eiki Ojima's co-authors include Yasuhiro Inoue, Chikao Miki, Masato Kusunoki, Tsuyoshi Hatada, Naomi Konishi, Yasuhiko Mohri, J. Hiro, M. Kusunoki, Junichiro Hiro and Hideki Watanabe and has published in prestigious journals such as Critical Care Medicine, International Journal of Cancer and Diseases of the Colon & Rectum.

In The Last Decade

Eiki Ojima

21 papers receiving 453 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Eiki Ojima Japan	12	253	135	131	105	70	26	463
M. Coviello Italy	13	113 0.4×	116 0.9×	99 0.8×	56 0.5×	91 1.3×	26	446
José Manuel Aramendía Spain	14	326 1.3×	104 0.8×	45 0.3×	275 2.6×	60 0.9×	46	587
K Heer United Kingdom	8	210 0.8×	87 0.6×	241 1.8×	64 0.6×	127 1.8×	17	425
Shande Tang United States	10	152 0.6×	62 0.5×	137 1.0×	97 0.9×	51 0.7×	15	454
Alexandros Papalambros Greece	12	161 0.6×	140 1.0×	90 0.7×	99 0.9×	70 1.0×	25	402
Wen-hua Zhan China	14	234 0.9×	215 1.6×	165 1.3×	179 1.7×	69 1.0×	47	606
Yukio Chiba Japan	14	179 0.7×	210 1.6×	225 1.7×	197 1.9×	94 1.3×	40	676
Michelle Afkhami United States	13	148 0.6×	74 0.5×	135 1.0×	143 1.4×	74 1.1×	58	579
J. Crawford United States	12	271 1.1×	39 0.3×	137 1.0×	173 1.6×	85 1.2×	43	518
Roz Gibbs United Kingdom	7	123 0.5×	83 0.6×	129 1.0×	84 0.8×	108 1.5×	10	400

Countries citing papers authored by Eiki Ojima

Since Specialization

Citations

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

Fields of papers citing papers by Eiki Ojima

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Eiki Ojima

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

Yamamoto, Akira, Masahiro Tsujiura, Takeshi Yokoe, et al.. (2023). Symptom palliation with QUAD Shot radiation therapy to penile metastasis derived from descending colon cancer: a case report. International Cancer Conference Journal. 12(3). 210–215.

Moritani, Isao, Yutaka Yamanaka, Hidekazu Inoue, et al.. (2022). The gut microbiota composition in patients with right- and left-sided colorectal cancer and after curative colectomy, as analyzed by 16S rRNA gene amplicon sequencing. BMC Gastroenterology. 22(1). 313–313. 13 indexed citations

Kawamura, Mikio, Eiki Ojima, Shinji Yamashita, et al.. (2021). A Case of Anorectal Malignant Melanoma with Lymph Node Recurrence Showing a Complete Response to Nivolumab Treatment. The Japanese Journal of Gastroenterological Surgery. 54(1). 73–82. 1 indexed citations

Ojima, Eiki, Tetsuya Ikeda, Hideki Watanabe, et al.. (2014). Laparoscopic Sigmoidectomy Using a Hemi–Double-stapling Technique. Surgical Laparoscopy Endoscopy & Percutaneous Techniques. 24(2). e41–e42. 3 indexed citations

Mori, Koichiro, Naomi Konishi, Eiki Ojima, et al.. (2014). A Case of Isolated Traumatic Gallbladder Injury. Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association). 75(10). 2844–2848.

Toiyama, Yuji, Chikao Miki, Yasuhiro Inoue, et al.. (2008). Serum immunosuppressive acidic protein reflects systemic deterioration of colorectal cancer patient condition. Journal of Surgical Oncology. 97(5). 404–408. 2 indexed citations

Ojima, Eiki, Yasuhiro Inoue, Chikao Miki, Masaki Mori, & Masato Kusunoki. (2007). Effectiveness of gene expression profiling for response prediction of rectal cancer to preoperative radiotherapy. Journal of Gastroenterology. 42(9). 730–736. 24 indexed citations

Watanabe, Hideki, Yasuhiro Inoue, Keiichi Uchida, et al.. (2007). Octreotide improved the quality of life in a child with malignant bowel obstruction caused by peritoneal dissemination of colon cancer. Journal of Pediatric Surgery. 42(1). 259–260. 5 indexed citations

Ieta, Keisuke, Eiki Ojima, Fumiaki Tanaka, et al.. (2007). Identification of overexpressed genes in hepatocellular carcinoma, with special reference to ubiquitin‐conjugating enzyme E2C gene expression. International Journal of Cancer. 121(1). 33–38. 88 indexed citations

10.

Inoue, Yasuhiro, Chikao Miki, Hideki Watanabe, et al.. (2007). Schedule-dependent cytotoxicity of 5-fluorouracil and irinotecan in a colon cancer cell line. Journal of Gastroenterology. 41(12). 1149–1157. 12 indexed citations

11.

Miki, Chikao, Yasuhiro Inoue, Eiki Ojima, et al.. (2006). Combined Measurement of Hepatocyte Growth Factor and Carcinoembryonic Antigen as a Prognostic Marker for Patients with Dukes A and B Colorectal Cancer: Results of a Five-Year Study. Diseases of the Colon & Rectum. 49(11). 1710–1718. 8 indexed citations

12.

Inoue, Yasuhiro, Chikao Miki, Hideki Watanabe, Eiki Ojima, & Masato Kusunoki. (2006). Genomic instability and tissue expression of angiogenic growth factors in sporadic colorectal cancer. Surgery. 139(3). 305–311. 9 indexed citations

13.

Toiyama, Yuji, Yasuhiro Inoue, Junichiro Hiro, et al.. (2006). The range of optimal concentration and mechanisms of paclitaxel in radio-enhancement in gastrointestinal cancer cell lines. Cancer Chemotherapy and Pharmacology. 59(6). 733–742. 13 indexed citations

14.

Ojima, Eiki, Yasuhiro Inoue, Hideki Watanabe, et al.. (2006). The optimal schedule for 5-fluorouracil radiosensitization in colon cancer cell lines. Oncology Reports. 16(5). 1085–91. 22 indexed citations

15.

Inoue, Yasuhiro, Chikao Miki, Hideki Watanabe, et al.. (2006). Irinotecan cytotoxicity does not necessarily depend on the UGT1A1 polymorphism but on fluoropyrimidine: A molecular case report. Oncology Reports. 16(5). 971–4.

16.

Miki, Chikao, Yasuhiro Inoue, Yuji Toiyama, et al.. (2005). Deficiency in systemic interleukin-1 receptor antagonist production as an operative risk factor in malnourished elderly patients with colorectal carcinoma. Critical Care Medicine. 33(1). 177–180. 14 indexed citations

17.

Miki, Chikao, J. Hiro, Eiki Ojima, et al.. (2005). Perioperative Allogeneic Blood Transfusion, the Related Cytokine Response and Long-term Survival After Potentially Curative Resection of Colorectal Cancer. Clinical Oncology. 18(1). 60–66. 85 indexed citations

18.

Miki, Chikao, Naomi Konishi, Eiki Ojima, et al.. (2004). C-Reactive Protein as a Prognostic Variable That Reflects Uncontrolled Up-Regulation of the IL-1-IL-6 Network System in Colorectal Carcinoma. Digestive Diseases and Sciences. 49(6). 970–976. 101 indexed citations

19.

Inoue, Yasuhiro, Chikao Miki, Eiki Ojima, Yoshihito Nomoto, & Masato Kusunoki. (2003). Pelvic insufficiency fractures after preoperative radiotherapy for rectal carcinoma. International Journal of Clinical Oncology. 8(5). 336–339. 13 indexed citations

20.

Ojima, Eiki, et al.. (1999). Delivery of a normal newborn after intensive medical treatment for an acute exacerbation of ulcerative colitis during pregnancy: A case report. Surgery Today. 29(12). 1257–1259. 11 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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