Ryozo Okada

2.5k total citations
126 papers, 1.9k citations indexed

About

Ryozo Okada is a scholar working on Cardiology and Cardiovascular Medicine, Surgery and Radiology, Nuclear Medicine and Imaging. According to data from OpenAlex, Ryozo Okada has authored 126 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 88 papers in Cardiology and Cardiovascular Medicine, 33 papers in Surgery and 20 papers in Radiology, Nuclear Medicine and Imaging. Recurrent topics in Ryozo Okada's work include Cardiac Arrhythmias and Treatments (23 papers), Cardiomyopathy and Myosin Studies (21 papers) and Cardiac Structural Anomalies and Repair (20 papers). Ryozo Okada is often cited by papers focused on Cardiac Arrhythmias and Treatments (23 papers), Cardiomyopathy and Myosin Studies (21 papers) and Cardiac Structural Anomalies and Repair (20 papers). Ryozo Okada collaborates with scholars based in Japan, United States and India. Ryozo Okada's co-authors include Hiroaki Kawano, Katsusuke Yano, Sachio Kawai, Masaya Sugiura, Hiroshi Yamaguchi, Megumu Ogawa, Ritsuko Koga, Kiichi Arahata, Atsushi J. Nagano and Junya Kawada and has published in prestigious journals such as Nature Genetics, Journal of the American College of Cardiology and The American Journal of Cardiology.

In The Last Decade

Ryozo Okada

113 papers receiving 1.7k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ryozo Okada Japan 19 1.2k 498 402 389 179 126 1.9k
Bent Ø. Kristensen Denmark 22 1.4k 1.1× 228 0.5× 329 0.8× 312 0.8× 259 1.4× 44 2.2k
Serdar Aksöyek Türkiye 25 1.2k 1.0× 115 0.2× 228 0.6× 313 0.8× 137 0.8× 77 1.8k
R. Funck Germany 18 1.5k 1.2× 176 0.4× 216 0.5× 438 1.1× 90 0.5× 46 1.8k
R Emanuel United States 24 802 0.7× 201 0.4× 142 0.4× 374 1.0× 311 1.7× 76 1.4k
Kunitake Hashiba Japan 17 833 0.7× 290 0.6× 99 0.2× 224 0.6× 67 0.4× 94 1.5k
Tomohiro Nakamura Japan 20 429 0.4× 213 0.4× 171 0.4× 328 0.8× 205 1.1× 87 1.3k
Dimitrios Alexopoulos Greece 18 643 0.5× 246 0.5× 189 0.5× 258 0.7× 120 0.7× 55 1.3k
Amanda Varnava United Kingdom 14 2.1k 1.7× 265 0.5× 417 1.0× 416 1.1× 251 1.4× 35 2.6k
Tomoko Tani Japan 24 1.1k 0.9× 147 0.3× 258 0.6× 675 1.7× 338 1.9× 100 1.8k
Koki Nakanishi Japan 22 1.1k 0.9× 315 0.6× 491 1.2× 656 1.7× 155 0.9× 102 1.9k

Countries citing papers authored by Ryozo Okada

Since Specialization
Citations

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

Fields of papers citing papers by Ryozo Okada

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryozo Okada

This figure shows the co-authorship network connecting the top 25 collaborators of Ryozo Okada. A scholar is included among the top collaborators of Ryozo Okada 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 Ryozo Okada. Ryozo Okada 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.
Ino, Toshihiro, et al.. (2008). Cross-sectional study regarding with the relationships among lifestyle, lipid profile and passive smoking in children. 40(2). 124–131. 1 indexed citations
2.
Ino, Toshihiro, et al.. (2006). A passive smoking screening program for children. Preventive Medicine. 42(6). 427–429. 17 indexed citations
3.
Kawano, Hiroaki, Ryozo Okada, & Katsusuke Yano. (2003). Histological study on the distribution of autonomic nerves in the human heart. Heart and Vessels. 18(1). 32–39. 275 indexed citations
4.
Suzuki, Hiromasa, Sachio Kawai, Tadanori Aizawa, et al.. (1999). Histological evaluation of coronary plaque in patients with variant angina: relationship between vasospasm and neointimal hyperplasia in primary coronary lesions. Journal of the American College of Cardiology. 33(1). 198–205. 70 indexed citations
5.
Kodama, Kazunori, Hironori Toshima, Yoshio Yazaki, et al.. (1999). Life-Style Related Factors and Idiopathic Dilated Cardiomyopathy - A Case-Control Study Using Pooled Controls -. Journal of Epidemiology. 9(5). 286–296. 2 indexed citations
6.
Miyauchi, Katsumi, Masanori Aikawa, Takeshi Tani, et al.. (1998). Effect of Probucol on Smooth Muscle Cell Proliferation and Dedifferentiation After Vascular Injury in Rabbits: Possible Role of PDGF. Cardiovascular Drugs and Therapy. 12(3). 251–260. 39 indexed citations
7.
Ino, Toshihiro, Kei Nishimoto, Mataichi Okubo, et al.. (1997). Apoptosis as a Possible Cause of Wall Thinning in End-Stage Hypertrophic Cardiomyopathy. The American Journal of Cardiology. 79(8). 1137–1141. 35 indexed citations
8.
Atarashi, Hirotsugu, Satoshi Ogawa, Kenichi Harumi, et al.. (1996). Characteristics of patients with right bundle branch block and ST-segment elevation in right precordial leads. The American Journal of Cardiology. 78(5). 581–583. 85 indexed citations
9.
Suzuki, Hiromasa, Satoshi Sunayama, Sachio Kawai, et al.. (1996). The association between growth of atherosclerotic plaques and vasospastic angina: An atherectomy study. Journal of the American College of Cardiology. 27(2). 383–383. 1 indexed citations
10.
Tomaru, Takanobu, Fumitaka Nakamura, Masao Omata, et al.. (1995). Local treatment with antithrombotic drugs can prevent thrombus formation: An angioscopic and angiographic study. Journal of the American College of Cardiology. 26(5). 1325–1332. 15 indexed citations
11.
Okada, Ryozo & Yasuko Kawano. (1995). Pathology of Congenital Heart Disease in Adulthood. Japanese Circulation Journal. 58(SupplementIV). 1281–1284. 1 indexed citations
12.
Nakazato, Yuji, Yasuro Nakata, Takashi Tokano, et al.. (1994). Intra‐His Bundle Block Corresponds with Interruption of the Branching Portion of the His Bundle. Pacing and Clinical Electrophysiology. 17(6). 1124–1133. 1 indexed citations
13.
Kawano, Hiroaki, Sachio Kawai, Toshikazu Shirai, & Ryozo Okada. (1993). Morphological study on vagal innervation in human atrioventricular valves using histochemical method.. Japanese Circulation Journal. 57(8). 753–759. 16 indexed citations
14.
Sakaguchi, Yasuhiro, Shigeru Kato, Atsuhiko Kawamoto, et al.. (1991). A Histopathological Study of Age‐related Changes of the Left Bundle Branch in the Human Heart. Acta Pathologica Japonica. 41(10). 730–736.
15.
Okada, Ryozo, et al.. (1989). Relation between coronary stenosis and myocardial lesions determined by a semiquantitative approach to myocardial fibrosis and hypertrophy due to ischemia. The American Journal of Cardiology. 63(10). E2–E6. 5 indexed citations
16.
Okada, Ryozo, et al.. (1989). Nonspecific myocarditis. A statistical and clinicopathological study of autopsy cases.. Japanese Circulation Journal. 53(1). 40–48. 19 indexed citations
17.
Okada, Ryozo, Sachio Kawai, Mitsuru Shimizu, & Noriko Yamauchi. (1985). 3)MYOCARDIAL HYPERTROPHY INDUCED BY THE ADMINISTRATION OF A LOW DOSAGE OF ISOPROTERENOL IN RATS (III). EFFECTS OF DILTIAZEM : THE 7th CONFERENCE ON CARDIOMYOPATHY. Japanese Circulation Journal-english Edition. 49(4). 462–463. 1 indexed citations
18.
Okada, Ryozo, Yasuro Nakata, Kazuo Kitamura, Keisuke Fukuda, & Makoto Takagi. (1977). A CLINICOPATHOLOGICAL STUDY ON THE CONDUCTION SYSTEM WITH AV BLOCK : WITH A SPECIAL REFERENCE TO CORRELATION BETWEEN HIS BUNDLE ELECTROGRAM (HBE) AND HISTOPATHOLOGIC FINDINGS : Ist Auditorium. Japanese Circulation Journal-english Edition. 41(7). 725. 1 indexed citations
19.
Okada, Ryozo, Seymour Glagov, & Maurice Lev. (1968). Different effects of increased volume and increased pressure on endocardial structure in hearts with atrial septal defect. American Heart Journal. 75(4). 474–486. 2 indexed citations
20.
Lev, Maurice, et al.. (1967). Blood Groups and Congenital Heart Disease. Diseases of the Chest. 52(5). 616–620. 1 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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