Koichiro Ogihara

458 total citations
27 papers, 311 citations indexed

About

Koichiro Ogihara is a scholar working on Surgery, Oncology and Urology. According to data from OpenAlex, Koichiro Ogihara has authored 27 papers receiving a total of 311 indexed citations (citations by other indexed papers that have themselves been cited), including 25 papers in Surgery, 8 papers in Oncology and 7 papers in Urology. Recurrent topics in Koichiro Ogihara's work include Bladder and Urothelial Cancer Treatments (25 papers), Urinary and Genital Oncology Studies (16 papers) and Urological Disorders and Treatments (4 papers). Koichiro Ogihara is often cited by papers focused on Bladder and Urothelial Cancer Treatments (25 papers), Urinary and Genital Oncology Studies (16 papers) and Urological Disorders and Treatments (4 papers). Koichiro Ogihara collaborates with scholars based in Japan, Sweden and United Kingdom. Koichiro Ogihara's co-authors include Mototsugu Oya, Eiji Kikuchi, Kazuhiro Matsumoto, Shuji Mikami, Ryuichi Mizuno, Keisuke Shigeta, Takeo Kosaka, Akira Miyajima, Nobuyuki Tanaka and Toshikazu Takeda and has published in prestigious journals such as SHILAP Revista de lepidopterología, Scientific Reports and The Journal of Urology.

In The Last Decade

Koichiro Ogihara

26 papers receiving 307 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Koichiro Ogihara Japan	10	206	109	72	68	52	27	311
Moritz Maas Germany	12	139 0.7×	144 1.3×	101 1.4×	104 1.5×	72 1.4×	27	344
Zhi-Ling Zhang China	11	146 0.7×	77 0.7×	99 1.4×	125 1.8×	31 0.6×	22	331
Ursula Kühs Germany	11	111 0.5×	130 1.2×	112 1.6×	143 2.1×	126 2.4×	27	335
Viktoria Stühler Germany	12	71 0.3×	96 0.9×	157 2.2×	139 2.0×	76 1.5×	34	308
Yoshiyuki Nagumo Japan	8	91 0.4×	35 0.3×	64 0.9×	75 1.1×	32 0.6×	48	238
Lauren Shuman United States	10	355 1.7×	104 1.0×	127 1.8×	217 3.2×	76 1.5×	16	491
Victoria Hinder New Zealand	7	136 0.7×	109 1.0×	64 0.9×	67 1.0×	26 0.5×	18	264
Marco Allasia Italy	12	106 0.5×	34 0.3×	95 1.3×	142 2.1×	84 1.6×	27	307
Amy Gursky United States	5	67 0.3×	82 0.8×	53 0.7×	71 1.0×	47 0.9×	5	208
Xiong‐Lin Sun China	12	94 0.5×	35 0.3×	119 1.7×	99 1.5×	68 1.3×	28	303

Countries citing papers authored by Koichiro Ogihara

Since Specialization

Citations

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

Fields of papers citing papers by Koichiro Ogihara

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koichiro Ogihara

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

Kikuchi, Eiji, Koichiro Ogihara, Keisuke Shigeta, et al.. (2021). Role of Previous Malignancy History in Clinical Outcomes in Patients with Initially Diagnosed Non-Muscle Invasive Bladder Cancer. Annals of Surgical Oncology. 28(9). 5349–5359. 4 indexed citations

Kikuchi, Eiji, Keisuke Shigeta, Koichiro Ogihara, et al.. (2021). Effects of transurethral resection under general anesthesia on tumor recurrence in non-muscle invasive bladder cancer. International Journal of Clinical Oncology. 26(11). 2094–2103. 6 indexed citations

Ide, Hiroki, Eiji Kikuchi, Koichiro Ogihara, et al.. (2021). Urinary pH is an independent predictor of upper tract recurrence in non-muscle-invasive bladder cancer patients with a smoking history. Scientific Reports. 11(1). 20675–20675. 6 indexed citations

Shigeta, Keisuke, Kazuhiro Matsumoto, Koichiro Ogihara, et al.. (2021). Does neoadjuvant chemotherapy have therapeutic benefit for node-positive upper tract urothelial carcinoma? Results of a multi-center cohort study. Urologic Oncology Seminars and Original Investigations. 40(3). 105.e19–105.e26. 13 indexed citations

Kikuchi, Eiji, Keisuke Shigeta, Koichiro Ogihara, et al.. (2021). Site-specific differences in survival among upper and lower tract urothelial carcinoma patients treated with radical surgery. Japanese Journal of Clinical Oncology. 51(6). 984–991. 1 indexed citations

Kikuchi, Eiji, Keisuke Shigeta, Koichiro Ogihara, et al.. (2021). Diagnostic performance of the vesical imaging-reporting and data system for detecting muscle-invasive bladder cancer in real clinical settings: Comparison with diagnostic cystoscopy. Urologic Oncology Seminars and Original Investigations. 40(2). 61.e1–61.e8. 12 indexed citations

Kikuchi, Eiji, Hiroki Ide, Takayuki Takahashi, et al.. (2021). Oncological outcomes of dose reductions in cisplatin due to renal dysfunction for patients with metastatic urothelial carcinoma. SHILAP Revista de lepidopterología. 2(5). 322–330. 5 indexed citations

Ogihara, Koichiro, Eiji Kikuchi, Keisuke Shigeta, et al.. (2020). The pretreatment neutrophil-to-lymphocyte ratio is a novel biomarker for predicting clinical responses to pembrolizumab in platinum-resistant metastatic urothelial carcinoma patients. Urologic Oncology Seminars and Original Investigations. 38(6). 602.e1–602.e10. 40 indexed citations

Takamatsu, Kimiharu, Kazuhiro Matsumoto, Eiji Kikuchi, et al.. (2020). Can random bladder biopsies be eliminated after bacillus Calmette–Guérin therapy against carcinoma in situ?. International Urology and Nephrology. 53(3). 465–469. 1 indexed citations

10.

Shigeta, Keisuke, Eiji Kikuchi, Masashi Matsushima, et al.. (2020). Relationship between radiation doses and erectile function deterioration in patients with localized prostate cancer treated with permanent prostate brachytherapy. International Journal of Urology. 27(12). 1087–1093. 3 indexed citations

11.

Shigeta, Keisuke, Kazuhiro Matsumoto, Koichiro Ogihara, et al.. (2020). The clinicopathological characteristics of muscle‐invasive bladder recurrence in upper tract urothelial carcinoma. Cancer Science. 112(3). 1084–1094. 8 indexed citations

12.

Shigeta, Keisuke, Eiji Kikuchi, Takayuki Abe, et al.. (2019). Long-Term Oncologic Outcomes of Laparoscopic Versus Open Radical Nephroureterectomy for Patients with T3N0M0 Upper Tract Urothelial Carcinoma: A Multicenter Cohort Study with Adjustment by Propensity Score Matching. Annals of Surgical Oncology. 26(11). 3774–3781. 9 indexed citations

13.

Shigeta, Keisuke, Eiji Kikuchi, Takayuki Abe, et al.. (2019). A Novel Risk-based Approach Simulating Oncological Surveillance After Radical Nephroureterectomy in Patients with Upper Tract Urothelial Carcinoma. European Urology Oncology. 3(6). 756–763. 11 indexed citations

14.

Ogihara, Koichiro, Eiji Kikuchi, Shogo Okazaki, et al.. (2019). Sulfasalazine could modulate the CD44v9‐xCT system and enhance cisplatin‐induced cytotoxic effects in metastatic bladder cancer. Cancer Science. 110(4). 1431–1441. 46 indexed citations

15.

Tanaka, Nobuyuki, Shintaro Katayama, Kaneyasu Nishimura, et al.. (2018). Single‐cell RNA‐seq analysis reveals the platinum resistance gene COX7B and the surrogate marker CD63. Cancer Medicine. 7(12). 6193–6204. 32 indexed citations

16.

Kikuchi, Eiji, et al.. (2017). Preoperative sarcopenia status is associated with lymphovascular invasion in upper tract urothelial carcinoma patients treated with radical nephroureterectomy. Canadian Urological Association Journal. 12(3). E132–6. 9 indexed citations

17.

Ogihara, Koichiro, Eiji Kikuchi, Keitaro Watanabe, et al.. (2017). Can urologists introduce the concept of “oligometastasis” for metastatic bladder cancer after total cystectomy?. Oncotarget. 8(67). 111819–111835. 14 indexed citations

18.

Ogihara, Koichiro, Eiji Kikuchi, Kazuyuki Yuge, et al.. (2016). The Preoperative Neutrophil-to-lymphocyte Ratio is a Novel Biomarker for Predicting Worse Clinical Outcomes in Non-muscle Invasive Bladder Cancer Patients with a Previous History of Smoking. Annals of Surgical Oncology. 23(S5). 1039–1047. 18 indexed citations

19.

Ogihara, Koichiro, Takeo Kosaka, Eiji Kikuchi, et al.. (2015). Spontaneous Regression of Epstein-Barr Virus-Positive Primary Diffuse Large Cell B-Cell Lymphoma of the Urinary Bladder After the Cessation of Enzalutamide. Clinical Genitourinary Cancer. 14(2). e215–e218. 4 indexed citations

20.

Ogihara, Koichiro, Eiji Kikuchi, Kazuyuki Yuge, et al.. (2015). Refraining from Smoking for 15 Years or More Reduced the Risk of Tumor Recurrence in Non-muscle Invasive Bladder Cancer Patients. Annals of Surgical Oncology. 23(5). 1752–1759. 21 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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