Hiroyuki Kojima

2.3k total citations
187 papers, 1.6k citations indexed

About

Hiroyuki Kojima is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Control and Systems Engineering. According to data from OpenAlex, Hiroyuki Kojima has authored 187 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 69 papers in Surgery, 52 papers in Pulmonary and Respiratory Medicine and 35 papers in Control and Systems Engineering. Recurrent topics in Hiroyuki Kojima's work include Gallbladder and Bile Duct Disorders (27 papers), Pancreatic and Hepatic Oncology Research (24 papers) and Esophageal and GI Pathology (19 papers). Hiroyuki Kojima is often cited by papers focused on Gallbladder and Bile Duct Disorders (27 papers), Pancreatic and Hepatic Oncology Research (24 papers) and Esophageal and GI Pathology (19 papers). Hiroyuki Kojima collaborates with scholars based in Japan, United States and Greece. Hiroyuki Kojima's co-authors include Satoshi Sawada, Atsushi Komemushi, Noboru Tanigawa, Shuji Kariya, Yuzo Shomura, Shuntaro Mukai, Takayoshi Tsuchiya, Ryosuke Tonozuka, Sadao Komemushi and Takao Itoi and has published in prestigious journals such as SHILAP Revista de lepidopterología, Scientific Reports and Radiology.

In The Last Decade

Hiroyuki Kojima

167 papers receiving 1.5k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hiroyuki Kojima Japan 20 741 340 337 232 167 187 1.6k
Takashi Yamanaka Japan 24 415 0.6× 290 0.9× 553 1.6× 372 1.6× 172 1.0× 146 2.4k
Hiroaki Seki Japan 24 352 0.5× 91 0.3× 707 2.1× 241 1.0× 155 0.9× 171 2.5k
Shih‐Ming Wang Taiwan 22 365 0.5× 171 0.5× 185 0.5× 339 1.5× 134 0.8× 103 1.8k
Thomas Herold Germany 22 517 0.7× 50 0.1× 353 1.0× 235 1.0× 67 0.4× 84 1.4k
Gregory A. Fishbein United States 25 465 0.6× 107 0.3× 297 0.9× 93 0.4× 364 2.2× 83 1.8k
Kazuo Morita Japan 19 303 0.4× 89 0.3× 129 0.4× 352 1.5× 172 1.0× 105 1.3k
Takao Endo Japan 30 1.5k 2.0× 373 1.1× 1.1k 3.1× 950 4.1× 218 1.3× 198 4.3k
Cong Gao China 22 343 0.5× 168 0.5× 102 0.3× 126 0.5× 305 1.8× 70 1.6k
Jin Hee Ahn South Korea 29 317 0.4× 113 0.3× 403 1.2× 550 2.4× 90 0.5× 157 2.5k
Naoyuki Watanabe Japan 33 238 0.3× 165 0.5× 333 1.0× 166 0.7× 210 1.3× 156 3.4k

Countries citing papers authored by Hiroyuki Kojima

Since Specialization
Citations

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

Fields of papers citing papers by Hiroyuki Kojima

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hiroyuki Kojima

This figure shows the co-authorship network connecting the top 25 collaborators of Hiroyuki Kojima. A scholar is included among the top collaborators of Hiroyuki Kojima 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 Hiroyuki Kojima. Hiroyuki Kojima 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.
Kojima, Hiroyuki, Takao Itoi, Atsushi Sofuni, et al.. (2025). The impact of the novel EUS scope and ultrasonographic system for diagnosis and therapy in patients with pancreatobiliary diseases (videos). Journal of Hepato-Biliary-Pancreatic Sciences. 32(7). 544–553.
2.
Mukai, Shuntaro, Atsushi Sofuni, Takayoshi Tsuchiya, et al.. (2025). Endoscopic Step‐up Approach for Walled‐off Necrosis After Acute Pancreatitis. DEN Open. 6(1). e70188–e70188.
3.
Itoi, Takao, Takayoshi Tsuchiya, Reina Tanaka, et al.. (2025). Impact of a Thinner Snare Wire With Optimal Electrosurgical Unit Settings on the Risk of Delayed Bleeding After Endoscopic Papillectomy: A Propensity Score‐Matched Analysis (With Video). Digestive Endoscopy. 37(11). 1170–1178. 1 indexed citations
4.
5.
Matsunami, Yukitoshi, Takao Itoi, Takayoshi Tsuchiya, et al.. (2024). Overcoming difficulties in duodenoscope insertion due to scope deflection by mounting a splinting tube on a therapeutic video duodenoscope. Journal of Hepato-Biliary-Pancreatic Sciences. 31(10). e58–e59. 1 indexed citations
6.
Mukai, Shuntaro, Takao Itoi, Takayoshi Tsuchiya, et al.. (2024). A novel technique for one‐step dilation followed by bile aspiration using an ultra‐tapered bougie dilator with side holes to minimize bile leakage during EUS‐guided hepaticogastrostomy. Journal of Hepato-Biliary-Pancreatic Sciences. 31(5). e17–e19. 1 indexed citations
7.
Kojima, Hiroyuki, et al.. (2023). Surgical salvage intervention for a migrated metal stent during endoscopic ultrasound-guided hepaticogastrostomy. Endoscopy. 55(S 01). E1228–E1229. 1 indexed citations
8.
Yamamoto, Kenjiro, Atsushi Sofuni, Takayoshi Tsuchiya, et al.. (2023). Factors predicting technical failure of endoscopic transpapillary gallbladder drainage for acute cholecystitis. SHILAP Revista de lepidopterología. 4(1). e308–e308. 1 indexed citations
9.
Yamamoto, Kenjiro, Takayoshi Tsuchiya, Reina Tanaka, et al.. (2023). Endoscopic retrieval of a proximally migrated fully covered self‐expandable metal stent using biopsy forceps with a guiding sheath cannula. Journal of Hepato-Biliary-Pancreatic Sciences. 30(12). e81–e83. 1 indexed citations
10.
Yamamoto, Kenjiro, Takao Itoi, Yukitoshi Matsunami, et al.. (2023). Early and late effects of endoscopic interventions in patients with malignant afferent loop syndrome: A single‐center experience and literature review. Journal of Hepato-Biliary-Pancreatic Sciences. 31(2). 120–132. 1 indexed citations
11.
Yamamoto, Kenjiro, et al.. (2022). Use of a novel self‐assembling hemostatic gel as a complementary therapeutic tool for endoscopic sphincterotomy‐related bleeding. Journal of Hepato-Biliary-Pancreatic Sciences. 29(9). e81–e83. 12 indexed citations
12.
Mukai, Shuntaro, Takao Itoi, & Hiroyuki Kojima. (2022). Over‐the‐scope clip closure of a pancreaticocolonic fistula with walled‐off necrosis after necrotizing pancreatitis using a rendezvous technique. Digestive Endoscopy. 35(1). e24–e25. 1 indexed citations
13.
Yamamoto, Kenjiro, Yukitoshi Matsunami, Takayoshi Tsuchiya, et al.. (2021). Stent placement using the EUS‐guided pancreatic duct drainage rendezvous technique for pancreatic ductal stenosis after endoscopic papillectomy. Journal of Hepato-Biliary-Pancreatic Sciences. 29(4). e19–e21. 1 indexed citations
14.
FURUSHO, Junji, et al.. (2016). Improvement of Upper Limbs Rehabilitation System PLEMO-Y(Kaken). The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec). 2016(0). 2A1–01b2. 1 indexed citations
15.
FURUSHO, Junji, et al.. (2015). 2A2-I03 Development of Upper and Lower Limb Rehabilitation System PLEMO-BAT・PLEMO-BLT for Stroke Patients Using Bilateral Limb Motion. The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec). 2015(0). _2A2–I03_1. 2 indexed citations
16.
Kojima, Hiroyuki, et al.. (2013). Development of Real-time Doze Detection Method Using Blink Bursts and Isolated Blinks. IEICE Technical Report; IEICE Tech. Rep.. 113(61). 1–5.
17.
Tanigawa, Noboru, Shuji Kariya, Hiroyuki Kojima, et al.. (2009). Cerebral microembolisation during radiofrequency ablation of lung tumours: detection by carotid duplex ultrasound. British Journal of Radiology. 82(975). 249–253. 1 indexed citations
18.
Kubota, Naoyuki, et al.. (2008). State estimation based on a spiking neural network using ultrasonic oscillosensors. World Automation Congress. 1–6. 4 indexed citations
19.
Kojima, Hiroyuki, et al.. (2005). Cooperative Obstacle-Avoidance Pushing Transportation of a Planar Object with One Leader and Two Follower Mobile Robots. Journal of Robotics and Mechatronics. 17(1). 77–88. 4 indexed citations
20.
Tanigawa, Noboru, Shuji Kariya, Atsushi Komemushi, et al.. (2004). Stenting of the Superior Mesenteric Artery as a Preoperative Treatment for Total Pancreatectomy. CardioVascular and Interventional Radiology. 27(5). 533–5. 5 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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