Hiroyuki Koga

2.9k total citations
196 papers, 1.9k citations indexed

About

Hiroyuki Koga is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Rheumatology. According to data from OpenAlex, Hiroyuki Koga has authored 196 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 149 papers in Surgery, 75 papers in Pulmonary and Respiratory Medicine and 29 papers in Rheumatology. Recurrent topics in Hiroyuki Koga's work include Pediatric Hepatobiliary Diseases and Treatments (46 papers), Gallbladder and Bile Duct Disorders (40 papers) and Congenital gastrointestinal and neural anomalies (33 papers). Hiroyuki Koga is often cited by papers focused on Pediatric Hepatobiliary Diseases and Treatments (46 papers), Gallbladder and Bile Duct Disorders (40 papers) and Congenital gastrointestinal and neural anomalies (33 papers). Hiroyuki Koga collaborates with scholars based in Japan, United States and China. Hiroyuki Koga's co-authors include Atsuyuki Yamataka, Geoffrey J. Lane, Go Miyano, Tadaharu Okazaki, Manabu Okawada, Daniel H. Teitelbaum, Takashi Doi, Hiroki Nakamura, Takanori Ochi and Takeshi Miyano and has published in prestigious journals such as SHILAP Revista de lepidopterología, Macromolecules and Annals of Surgery.

In The Last Decade

Hiroyuki Koga

182 papers receiving 1.9k citations

Peers

Countries citing papers authored by Hiroyuki Koga

Since Specialization

Citations

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

Fields of papers citing papers by Hiroyuki Koga

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hiroyuki Koga

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

#	Work	Indexed citations
1	Enhancing Mechanical Properties and Crystallization Kinetics of Isotactic Polypropylene by Boronic Acid-Cross-Linked Additives 2025 ·Macromolecules ·Keiko Shimizu, Shin‐ichi Kihara, Mikihiro Hayashi, Hiroyuki Koga, Yuushou Nakayama, Takeshi Shiono, Ryō Tanaka	0
2	Functional Outcome in Patients With Anorectal Malformation With Recto-prostatic or Recto-bulbar Urethral Fistula and Comparison Between Different Surgical Approaches: A Multi-center Study 2024 ·Journal of Pediatric Surgery ·Carol Wong, Hiroyuki Koga, Koshiro Sugita, Daiki Kato, Annika Mutanen, Bhy Chung, Go Miyano, Toshio Harumatsu, (unknown), Yoichi Nakagawa, Hiroo Uchida, Mikko P. Pakarinen, Kenneth Kak Yuen Wong	0
3	Robot‐Assisted Retroperitoneoscopic Traction‐Aligned Suture Repair of Failed Laparoscopic Pyeloplasty for Ureteropelvic Junction Obstruction 2024 ·Asian Journal of Endoscopic Surgery ·Hideaki Nakajima, (unknown), Hiroyuki Koga, Geoffrey J. Lane, Atsuyuki Yamataka	1
4	Recent progress and current status of pancreatobiliary interventional endoscopic ultrasound in children 2024 ·Digestive Endoscopy ·Shigeto Ishii, Hiroyuki Isayama, Mitsuyoshi Suzuki, Hiroyuki Koga, (unknown), Toshio Fujisawa, Toshiaki Shimizu, Atsuyuki Yamataka	2
5	Quaternary ammonium-functionalized polysilsesquioxanes for antifogging coating 2024 ·RSC Applied Polymers ·Takashi Hamada, (unknown), (unknown), (unknown), (unknown), Hiroyuki Koga, Joji Ohshita	0
6	Optical Trocar Access for Retroperitoneal Robotic-Assisted Pyeloplasty in Children with Ureteropelvic Junction Obstruction 2024 ·Journal of Laparoendoscopic & Advanced Surgical Techniques ·Hiroyuki Koga, (unknown), Masahiro Takeda, Takanori Ochi, Shogo Seo, Soichi Shibuya, (unknown), (unknown), (unknown), Geoffrey J. Lane, Atsuyuki Yamataka	1
7	Pulmonary artery diameter ratio as a prognostic indicator of congenital diaphragmatic hernia 2024 ·World Journal of Pediatric Surgery ·Yuichiro Miyake, Hiroyuki Koga, Shuko Nojiri, (unknown), Takanori Ochi, Go Miyano, Geoffrey J. Lane, Atsuyuki Yamataka, Tadaharu Okazaki	0
8	Pediatric Pancreatic Endocrine Tumor Presenting as Acute Pancreatitis: A Case Report 2023 ·Children ·(unknown), Mitsuyoshi Suzuki, (unknown), Hiroyuki Koga, Atsuyuki Yamataka, Toshiaki Shimizu	2
9	Upper Ureteral Reconstruction with a Tapered Descending Colon after Failed Pyeloplasties in a 13-Year-Old Boy 2023 ·SHILAP Revista de lepidopterología ·Hideaki Nakajima, Hiroyuki Koga, (unknown), (unknown), Geoffrey J. Lane, Atsuyuki Yamataka	0
10	Advantages of Urethroplasty Terminating at the Corona for Severe Hypospadias: Complications, Uroflowmetry, and Esthetics 2023 ·Journal of Pediatric Surgery ·(unknown), Shogo Seo, K. Kaneko, (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), Yuichiro Miyake, Takanori Ochi, Hiroyuki Koga, Geoffrey J. Lane, Atsuyuki Yamataka	1
11	Retroperitoneoscopic Pyeloplasty for Ureteropelvic Junction Obstruction in Children: Value of Robotic Assistance 2023 ·Journal of Pediatric Surgery ·Hiroyuki Koga, Hiroshi Murakami, Shogo Seo, Takanori Ochi, Hiroki Nakamura, Yuichiro Miyake, (unknown), Masahiro Takeda, (unknown), (unknown), (unknown), Geoffrey J. Lane, Atsuyuki Yamataka	3
12	Retroperitoneoscopic Surgery in Children Does Not Cause Pathological Desaturation in Cerebral/Renal Oxygenation on Near-Infrared Spectroscopy Compared with Laparoscopic and Thoracoscopic Surgery 2022 ·Journal of Laparoendoscopic & Advanced Surgical Techniques ·Yuichiro Miyake, (unknown), (unknown), Takanori Ochi, Shogo Seo, Hiroyuki Koga, Geoffrey J. Lane, Kinya Nishimura, Masakazu Hayashida, Atsuyuki Yamataka	1
13	Duration from the first pale stool to portoenterostomy is prognostic in biliary atresia. Comparison with age at portoenterostomy 2021 ·Clinics and Research in Hepatology and Gastroenterology ·Hiroki Nakamura, (unknown), Hiroyuki Koga, Go Miyano, Manabu Okawada, Takashi Doi, Geoffrey J. Lane, Tadaharu Okazaki, Masahiko Urao, Atsuyuki Yamataka	5
14	Endoscopic ultrasound-guided pancreatic drainage for treating a traumatic main pancreatic duct injury in a child 2021 ·Journal of Pediatric Surgery Case Reports ·Masafumi Tanaka, Shogo Seo, Shigeto Ishii, Takanori Ochi, Go Miyano, Hiroyuki Koga, Toshio Fujisawa, Geoffrey J. Lane, Atsuyuki Yamataka, Hiroyuki Isayama	1
15	Forty-Year Experience Alleviating Postoperative Hirschsprung-Associated Enterocolitis by Complete Full-Thickness Posterior Rectal Cuff Excision. The Anorectal Line Eliminates Problematic Anastomoses 2021 ·Journal of Laparoendoscopic & Advanced Surgical Techniques ·Masahiro Takeda, Go Miyano, (unknown), (unknown), Geoffrey J. Lane, Takashi Doi, Tsubasa Takahashi, Masahiko Urao, Tadaharu Okazaki, Takanori Ochi, Hiroyuki Koga, Atsuyuki Yamataka	2
16	Indications for Nonoperative Management of Uncomplicated Appendicitis in Children: A Prospective Analysis at a Single Institution 2019 ·Journal of Laparoendoscopic & Advanced Surgical Techniques ·(unknown), Go Miyano, Shuko Nojiri, Takanori Ochi, Soichi Shibuya, (unknown), Hiroki Nakamura, Shogo Seo, (unknown), Hiroshi Murakami, Manabu Okawada, Hiroyuki Koga, (unknown), Yuichiro Miyake, Geoffrey J. Lane, Naotake Yanagisawa, Atsuyuki Yamataka	2
17	Traction Sutures Allow Endoscopic Staples to Be Used Safely During Thoracoscopic Pulmonary Lobectomy in Children Weighing Less Than 15 Kg 2012 ·Journal of Laparoendoscopic & Advanced Surgical Techniques ·Hiroyuki Koga, Kenji Suzuki, Kinya Nishimura, Tadaharu Okazaki, Geoffrey J. Lane, Eiichi Inada, Atsuyuki Yamataka	6
18	Glutamine Prevents Total Parenteral Nutrition-Associated Changes to Intraepithelial Lymphocyte Phenotype and Function: A Potential Mechanism for the Preservation of Epithelial Barrier Function 2009 ·Journal of Interferon & Cytokine Research ·Keisuke Nose, Hua Yang, Xiaoyi Sun, (unknown), Hiroyuki Koga, Yongjia Feng, Eiichi Miyasaka, Daniel H. Teitelbaum	45
19	Laparoscopic-Assisted Repair for Prolapsed Colostomy in an Infant 2004 ·Pediatric Endosurgery & Innovative Techniques ·Hiroyuki Koga, Atsuyuki Yamataka, (unknown), (unknown), Hiroyuki Kobayashi, Geoffrey J. Lane, Takeshi Miyano	1
20	P-103 Intracorporeal electro hydraulic lithotripsy for intrahepatic bile duct stones after choledochal cyst excision 2003 ·日本小児外科学会雑誌 ·Hiroyuki Koga, Atsuyuki Yamataka, Hideki Shima, Toshihiro Yanai, Hiroyuki Kobayashi, Takeshi Miyano	2

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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