Hitoshi Koyanagi

3.1k total citations
221 papers, 2.2k citations indexed

About

Hitoshi Koyanagi is a scholar working on Surgery, Cardiology and Cardiovascular Medicine and Biomedical Engineering. According to data from OpenAlex, Hitoshi Koyanagi has authored 221 papers receiving a total of 2.2k indexed citations (citations by other indexed papers that have themselves been cited), including 114 papers in Surgery, 112 papers in Cardiology and Cardiovascular Medicine and 70 papers in Biomedical Engineering. Recurrent topics in Hitoshi Koyanagi's work include Mechanical Circulatory Support Devices (65 papers), Cardiac Valve Diseases and Treatments (60 papers) and Cardiac Structural Anomalies and Repair (49 papers). Hitoshi Koyanagi is often cited by papers focused on Mechanical Circulatory Support Devices (65 papers), Cardiac Valve Diseases and Treatments (60 papers) and Cardiac Structural Anomalies and Repair (49 papers). Hitoshi Koyanagi collaborates with scholars based in Japan, United States and Pakistan. Hitoshi Koyanagi's co-authors include Masahiro Endo, Shigeyuki Aomi, A Hashimoto, Chisato Nojiri, Hiroshi Nishida, M Hachida, Masaya Kitamura, Yasuharu Noishiki, Osamu Tagusari and Kiyoharu Nakano and has published in prestigious journals such as Circulation, Journal of the American College of Cardiology and CHEST Journal.

In The Last Decade

Hitoshi Koyanagi

206 papers receiving 2.1k citations

Peers

Countries citing papers authored by Hitoshi Koyanagi

Since Specialization

Citations

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

Fields of papers citing papers by Hitoshi Koyanagi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hitoshi Koyanagi

This figure shows the co-authorship network connecting the top 25 collaborators of Hitoshi Koyanagi. A scholar is included among the top collaborators of Hitoshi Koyanagi 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 Hitoshi Koyanagi. Hitoshi Koyanagi 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	Phosphorylated cellulose nanofiber membranes with high proton conductivity for polymer electrolyte membranes 2025 ·Green Chemistry ·(unknown), (unknown), Hitoshi Koyanagi, (unknown), (unknown), Takashi Nagata, Shotaro Nishitsuji, Jun Matsui, Akito Masuhara	6
2	A large-scale Shape Benchmark for 3D object retrieval: Toyohashi shape benchmark 2012 ·Asia-Pacific Signal and Information Processing Association Annual Summit and Conference ·Atsushi Tatsuma, Hitoshi Koyanagi, Masaki Aono	33
3	Reconstruction of the left ventricle in a patient with cardiac hemangioma at the apex 2001 ·The Annals of Thoracic Surgery ·Yasuko Tomizawa, Masahiro Endo, Hiroshi Nishida, (unknown), Hitoshi Koyanagi	20
4	In vivo study of the performance of a mechanical seal involving a recirculating cooling water system used in a centrifugal blood pump 2000 ·Jun Tomioka, Toshio Mōri, Kenji Yamazaki, Takehide Akimoto, Hitoshi Koyanagi	1
5	A Case of Papillary Fibroelastoma of the Left Ventricular Septum Complicated with a Rheumatic Valve. 2000 ·Japanese Journal of Cardiovascular Surgery ·Masataka Yoda, (unknown), Satoshi Saitô, (unknown), (unknown), Toru Okamura, Akira Murata, Akihiko Kawai, M Hachida, Hitoshi Koyanagi	0
6	Retrograde cerebral perfusion for aortic arch surgery: analysis of risk factors 1999 ·The Annals of Thoracic Surgery ·Yuichi Ueda, Yutaka Okita, Shigeyuki Aomi, Hitoshi Koyanagi, Shinichi Takamoto	87
7	Rotary Blood Pump Flow Spontaneously Increases During Exercise Under Constant Pump Speed: Results of a Chronic Study 1999 ·Artificial Organs ·Takehide Akimoto, Kenji Yamazaki, Philip Litwak, Kenneth N. Litwak, Osamu Tagusari, Toshio Mōri, James F. Antaki, Marina V. Kameneva, Mary J. Watach, Mitsuo Umezu, Jun Tomioka, Robert L. Kormos, Hitoshi Koyanagi, Bartley P. Griffith	59
8	Estradiol effects on nitric oxide synthase expression in the rat aorta allograft 1999 ·Transplantation Proceedings ·Satoshi Saitô, Marie L. Foegh, Peter W. Ramwell, Hitoshi Koyanagi	4
9	Anticoagulation After Valve Replacement: A Multicenter Retrospective Study 1999 ·Artificial Organs ·(unknown), (unknown), Shiaki Kawada, Hiromi Kurosawa, Hitoshi Koyanagi, Yasuo Takeuchi, Yasuyuki Hosoda, Y Wanibuchi	8
10	Engineering analysis of the effect of atrial contraction on mitral prosthetic valve closing 1997 ·(unknown), Takeyoshi Dohi, Koichi Izumi, (unknown), (unknown), (unknown), Hitoshi Koyanagi, Yasunori Ota	1
11	Clinical Application of a Newly Developed Autoflow Control System for the Terumo Centrifugal Pump: From External Control to Built‐in Direct Control 1996 ·Artificial Organs ·Hiroshi Nishida, Tomohiro Nishinaka, Masahiro Endo, Hitoshi Koyanagi, (unknown), (unknown), Tetsuzo Akutsu	6
12	Clinical evaluation of newly developed membrane oxygenator"MENOX AL 600" comparative study with the "CAPIOX SX" oxygenator 1995 ·(unknown), Hiroshi NISHIDA, M Hachida, (unknown), (unknown), Susumu Suzuki, (unknown), A Hashimoto, Hitoshi Koyanagi	1
13	The Role of Leukocyte Depletion in Reducing Injury to Myocardium and Lung During Cardiopulmonary Bypass 1995 ·ASAIO Journal ·M Hachida, Naoji Hanayama, Takashi Okamura, (unknown), Tomohiro Maeda, (unknown), Masahiro Endo, A Hashimoto, Hitoshi Koyanagi	42
14	Successful Reconstruction of Aorto-Left Atrial Fistula Following Aortic Valve Replacement and Root Enlargement by the Manouguian Procedure 1994 ·Journal of Cardiac Surgery ·M Hachida, Hitoshi Koyanagi, Naoji Hanayama, (unknown), Kiyoharu Nakano	6
15	[Surgical repair of distal aortic arch aneurysm using "elephant trunk" technique]. 1992 ·PubMed ·(unknown), Akira Hashimoto, (unknown), M Hachida, Kiyoharu Nakano, Hitoshi Koyanagi	2
16	Development of an Ascending Aortic Valved Conduit 1992 ·Andrew Campbell, (unknown), Hitoshi Koyanagi	0
17	Pulmonary flow-resistance relationships in allografts after single lung transplantation in dogs 1989 ·Journal of Thoracic and Cardiovascular Surgery ·Kiyoyuki Eishi, (unknown), M Nagatsu, (unknown), Masaaki Yamagishi, (unknown), Hitoshi Koyanagi, Hiromi Kurosawa	4
18	Clinical application of a new vital staining method for the conduction system during heart operations 1988 ·Journal of Thoracic and Cardiovascular Surgery ·Kiyoshi Ishii, Yasunori Koga, (unknown), (unknown), Toshio Onitsuka, (unknown), Koichiro Shibata, Hiromi Kurosawa, Yasuharu Imai, Hitoshi Koyanagi	1
19	-422- IMMUNOHISTOCHEMICAL STUDY AND RADIO-IMMUNOASSAY OF ATRIAL NATRIURETIC POLYPEPTIDE (ANP) OF HUMAN ATRIAL TISSUES IN HEART DISEASES 1987 ·Japanese Circulation Journal-english Edition ·Makoto Nagata, (unknown), M Naruse, M Sekiguchi, Hitoshi Koyanagi, (unknown), (unknown), Koichiro M. Hirosawa	1
20	Open versus closed position fixation of bioprosthesis 1982 ·Journal of Thoracic and Cardiovascular Surgery ·(unknown), H Ohteki, Tatsuo Tsutsui, (unknown), (unknown), Hitoshi Koyanagi	6

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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