Itaru Oi

899 total citations
43 papers, 631 citations indexed

About

Itaru Oi is a scholar working on Surgery, Oncology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Itaru Oi has authored 43 papers receiving a total of 631 indexed citations (citations by other indexed papers that have themselves been cited), including 36 papers in Surgery, 11 papers in Oncology and 10 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Itaru Oi's work include Gastrointestinal disorders and treatments (17 papers), Pancreatitis Pathology and Treatment (13 papers) and Pancreatic and Hepatic Oncology Research (10 papers). Itaru Oi is often cited by papers focused on Gastrointestinal disorders and treatments (17 papers), Pancreatitis Pathology and Treatment (13 papers) and Pancreatic and Hepatic Oncology Research (10 papers). Itaru Oi collaborates with scholars based in Japan, United States and France. Itaru Oi's co-authors include Keiko Shiratori, Fumitake Toki, Takayoshi Nishino, Hiroyasu Oyama, Makio Kobayashi, Ken Takasaki, Shinjiro Kobayashi, Takahiro Kondo, Etsuko Hashimoto and Koichi Suda and has published in prestigious journals such as Gastrointestinal Endoscopy, Surgical Endoscopy and Endoscopy.

In The Last Decade

Itaru Oi

37 papers receiving 552 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Itaru Oi Japan 13 556 272 205 180 157 43 631
Masanori Koyabu Japan 12 548 1.0× 417 1.5× 187 0.9× 293 1.6× 87 0.6× 18 670
John Levey United States 11 169 0.3× 93 0.3× 114 0.6× 90 0.5× 111 0.7× 27 353
Quanda Liu China 8 323 0.6× 67 0.2× 163 0.8× 100 0.6× 147 0.9× 20 398
Yasutsugu Shoji Japan 16 481 0.9× 76 0.3× 92 0.4× 83 0.5× 425 2.7× 48 643
Kristen Cox United States 10 497 0.9× 314 1.2× 132 0.6× 26 0.1× 46 0.3× 19 562
G Zala Switzerland 8 215 0.4× 60 0.2× 67 0.3× 66 0.4× 136 0.9× 23 336
M. H. Kim South Korea 8 325 0.6× 60 0.2× 238 1.2× 53 0.3× 144 0.9× 10 439
Shuichiro Umemura Japan 14 365 0.7× 86 0.3× 288 1.4× 68 0.4× 144 0.9× 27 460
Stephan Miehlke Germany 11 404 0.7× 135 0.5× 147 0.7× 37 0.2× 32 0.2× 31 478
Olivier Saint‐Marc France 11 292 0.5× 40 0.1× 136 0.7× 166 0.9× 288 1.8× 22 488

Countries citing papers authored by Itaru Oi

Since Specialization
Citations

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

Fields of papers citing papers by Itaru Oi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Itaru Oi

This figure shows the co-authorship network connecting the top 25 collaborators of Itaru Oi. A scholar is included among the top collaborators of Itaru Oi 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 Itaru Oi. Itaru Oi 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.
Ichikawa, Takeshi, et al.. (2018). C-reactive Protein Can Predict Patients with Cirrhosis at a High Risk of Early Mortality after Acute Esophageal Variceal Bleeding. Internal Medicine. 58(4). 487–495. 4 indexed citations
2.
3.
Nakamura, Shinichi, et al.. (2008). LONG-TERM FOLLOW-UP OF GASTRIC ANTRAL VASCULAR ECTASIA TREATED BY ARGON PLASMA COAGULATION. Acta gastro-enterologica belgica. 50(6). 1495–1502. 2 indexed citations
4.
Suda, Koichi, Isao Nishimori, Masaru Takase, Itaru Oi, & Michio Ogawa. (2007). Autoimmune pancreatitis can be classified into early and advanced stages. Suizo. 22(2). 154–155. 1 indexed citations
5.
Nishino, Takayoshi, Hiroyasu Oyama, Etsuko Hashimoto, et al.. (2007). Clinicopathological differentiation between sclerosing cholangitis with autoimmune pancreatitis and primary sclerosing cholangitis. Journal of Gastroenterology. 42(7). 550–559. 79 indexed citations
6.
Suda, Koichi, Isao Nishimori, Masaru Takase, Itaru Oi, & Michio Ogawa. (2006). Autoimmune Pancreatitis Can Be Classified Into Early and Advanced Stages. Pancreas. 33(4). 345–350. 32 indexed citations
7.
Nishino, Takayoshi, Fumitake Toki, Itaru Oi, et al.. (2006). Prevalence of pancreatic and biliary tract tumors in pancreas divisum. Journal of Gastroenterology. 41(11). 1088–1093. 16 indexed citations
8.
Nakamura, Shinichi, et al.. (2006). LONG‐TERM FOLLOW UP OF GASTRIC ANTRAL VASCULAR ECTASIA TREATED BY ARGON PLASMA COAGULATION. Digestive Endoscopy. 18(2). 128–133. 19 indexed citations
9.
10.
Murata, Yoko, Ryoji Eguchi, Tsutomu Nakamura, et al.. (2003). Multimodality treatments with endoscopic mucosal resection of esophageal squamous cell carcinoma with submucosal invasion. Surgical Endoscopy. 17(9). 1429–1433. 7 indexed citations
11.
Oi, Itaru. (1998). ERCP Imaging. Pancreas. 16(3). 402–407. 4 indexed citations
12.
Oi, Itaru. (1991). Technical guidance of endoscopic pancreatocholangiography. International Journal of Pancreatology. 9(1). 1–6. 1 indexed citations
13.
Oi, Itaru, et al.. (1983). [A trial of double-contrast cholecystography under ultrasound guidance. A case of early cancer of the gallbladder].. PubMed. 80(12). 2605–2605.
14.
Shiratori, Keiko, et al.. (1983). [Clinical significance of serum elastase-1 determinations in patients with pancreatic disorders].. PubMed. 80(4). 1001–6. 1 indexed citations
15.
Figarella, Catherine, A De, Itaru Oi, & José‐Alain Sahel. (1978). Lipase Activity in Blood Following Endoscopic Pancreatography: Demonstration of Its Pancreatic Origin and Existence of Ductal or Acino-venous Pathways in Man. Scandinavian Journal of Gastroenterology. 13(4). 393–399. 7 indexed citations
16.
Toki, Fumitake, et al.. (1976). Continuous endoscopic pancreatocholedochal catheterization. Gastrointestinal Endoscopy. 23(2). 78–81. 24 indexed citations
17.
Maruyama, Michio, et al.. (1975). [Clinical studies of duodenitis with special reference to endoscopic examination].. PubMed. 72(4). 414–27.
18.
Oi, Itaru. (1972). Fiberduodenoscopy. Acta Endoscopica. 2(3-4). 56–61.
19.
Oi, Itaru, et al.. (1972). The endoscopic observations of the pyloric canal. Gastrointestinal Endoscopy. 19(1). 13–14.
20.
Oi, Itaru, et al.. (1969). Fiberduodenoscope: Direct Observation of the Papilla of Vater. Endoscopy. 1(3). 101–103. 27 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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