Takefumi Oka

534 total citations
21 papers, 293 citations indexed

About

Takefumi Oka is a scholar working on Cardiology and Cardiovascular Medicine, Molecular Biology and Radiology, Nuclear Medicine and Imaging. According to data from OpenAlex, Takefumi Oka has authored 21 papers receiving a total of 293 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Cardiology and Cardiovascular Medicine, 6 papers in Molecular Biology and 5 papers in Radiology, Nuclear Medicine and Imaging. Recurrent topics in Takefumi Oka's work include Cardiac electrophysiology and arrhythmias (7 papers), Cardiac Imaging and Diagnostics (5 papers) and ECG Monitoring and Analysis (4 papers). Takefumi Oka is often cited by papers focused on Cardiac electrophysiology and arrhythmias (7 papers), Cardiac Imaging and Diagnostics (5 papers) and ECG Monitoring and Analysis (4 papers). Takefumi Oka collaborates with scholars based in Japan. Takefumi Oka's co-authors include Masayuki Doi, Makoto Nakahama, Kenji Takeda, Yoshifumi Ninomiya, T. Tsuji, Takashi Murakami, Tohru Nakanishi, Masaharu Takigawa, Daiji Saito and Shozo Kusachi and has published in prestigious journals such as Circulation, Journal of Molecular and Cellular Cardiology and Heart Rhythm.

In The Last Decade

Takefumi Oka

21 papers receiving 284 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Takefumi Oka Japan 9 151 147 56 46 36 21 293
Makoto Nakahama Japan 11 155 1.0× 138 0.9× 61 1.1× 68 1.5× 37 1.0× 19 327
Hairui Sun China 9 63 0.4× 122 0.8× 57 1.0× 37 0.8× 69 1.9× 24 269
Chiara Calabrese Italy 13 100 0.7× 114 0.8× 59 1.1× 72 1.6× 10 0.3× 22 361
Sander M. van de Weg Netherlands 9 95 0.6× 115 0.8× 54 1.0× 41 0.9× 15 0.4× 11 318
Ferrin C. Wheeler United States 7 82 0.5× 178 1.2× 65 1.2× 63 1.4× 40 1.1× 16 314
Henriette S. Marstein Norway 7 209 1.4× 142 1.0× 38 0.7× 79 1.7× 23 0.6× 14 349
Pritha Chanana United States 9 66 0.4× 156 1.1× 56 1.0× 34 0.7× 35 1.0× 18 376
Greg Markby United Kingdom 11 73 0.5× 130 0.9× 29 0.5× 25 0.5× 17 0.5× 18 255
S.J. Shattil United States 6 70 0.5× 75 0.5× 59 1.1× 72 1.6× 16 0.4× 7 356
Francesca Giacopelli Italy 12 63 0.4× 182 1.2× 79 1.4× 53 1.2× 133 3.7× 21 415

Countries citing papers authored by Takefumi Oka

Since Specialization
Citations

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

Fields of papers citing papers by Takefumi Oka

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Takefumi Oka

This figure shows the co-authorship network connecting the top 25 collaborators of Takefumi Oka. A scholar is included among the top collaborators of Takefumi Oka 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 Takefumi Oka. Takefumi Oka 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.
2.
Yunoki, Kei, et al.. (2024). Brugada phenocopy in fulminant eosinophilic myocarditis: a case series. European Heart Journal - Case Reports. 8(12). ytae646–ytae646. 1 indexed citations
3.
Iwasaki, Keiichiro, Toru Miyoshi, Satoru Sakuragi, et al.. (2024). Impact of Serum Indoxyl Sulfate on One-Year Adverse Events in Chronic Kidney Disease Patients with Heart Failure. Journal of Clinical Medicine. 13(15). 4384–4384. 1 indexed citations
4.
Yunoki, Kei, et al.. (2022). Differences in Extracellular Fluid Volume Between Acute Heart Failure Patients with and Without High Systolic Blood Pressure. ESC Heart Failure. 9(5). 3358–3366. 7 indexed citations
5.
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Yamanaka, Toshiaki, et al.. (2018). Implantation of multiple polytetrafluoroethylene covered stent inside drug eluting stent to rescue purulent coronary artery ectasia with giant saccular aneurysm. International journal of cardiac imaging. 34(7). 1143–1146. 5 indexed citations
7.
8.
Morita, Hiroshi, Nobuhiro Nishii, Daiji Miura, et al.. (2009). Abnormal transmural repolarization process in patients with Brugada syndrome. Heart Rhythm. 6(8). 1163–1169. 13 indexed citations
9.
Morita, Hiroshi, Satoshi Nagase, Daiji Miura, et al.. (2009). Differential effects of cardiac sodium channel mutations on initiation of ventricular arrhythmias in patients with Brugada syndrome. Heart Rhythm. 6(4). 487–492. 18 indexed citations
10.
Iwasaki, Jun, Kazufumi Nakamura, Hiromi Matsubara, et al.. (2009). Relationship between circulating levels of monocyte chemoattractant protein-1 and systolic dysfunction in patients with hypertrophic cardiomyopathy. Cardiovascular Pathology. 18(6). 317–322. 17 indexed citations
11.
Nagase, Satoshi, Shigeki Hiramatsu, Nobuhiro Nishii, et al.. (2007). Abstract 1832: Location of Making Type 1 Electrocardiogram in Brugada Syndrome: Comparison between Lead Position and Anatomical Location of Right Ventricular Outflow Tract. Circulation. 116(suppl_16). 1 indexed citations
12.
Oka, Takefumi, et al.. (2004). Effect of short-term administration of high dose L-arginine on restenosis after percutaneous transluminal coronary angioplasty.. PubMed. 44(1). 13–20. 4 indexed citations
13.
Saito, Daiji, et al.. (2002). Risk Factors Indicating Recurrent Myocardial Infarction After Recovery From Acute Myocardial Infarction.. Circulation Journal. 66(10). 877–880. 7 indexed citations
14.
15.
Saito, Daiji, Takashi Murakami, Takefumi Oka, et al.. (2001). Relation of QT-Interval Variability to Ventricular Arrhythmias During Percutaneous Transluminal Coronary Angioplasty.. Japanese Circulation Journal. 65(9). 779–782. 5 indexed citations
16.
Nakahama, Makoto, Shozo Kusachi, Ichiro Naito, et al.. (2000). Expression of Perlecan Proteoglycan in the Infarct Zone of Mouse Myocardial Infarction. Journal of Molecular and Cellular Cardiology. 32(6). 1087–1100. 18 indexed citations
17.
Takeda, Kenji, Shozo Kusachi, Makoto Nakahama, et al.. (2000). Greater than normal expression of the collagen-binding stress protein heat-shock protein-47 in the infarct zone in rats after experimentally-induced myocardial infarction. Coronary Artery Disease. 11(1). 57–68. 27 indexed citations
18.
Saito, Daiji, et al.. (1999). Morphologic Correlation Between Atherosclerotic Lesions of the Carotid and Coronary Arteries in Patients With Angina Pectoris. Japanese Circulation Journal. 63(7). 522–526. 30 indexed citations
19.
Oka, Takefumi, Tohru Nakanishi, Kenji Takeda, et al.. (1998). Increased Expression of Connective Tissue Growth Factor in the Infarct Zone of Experimentally Induced Myocardial Infarction in Rats. Journal of Molecular and Cellular Cardiology. 30(11). 2411–2422. 107 indexed citations
20.

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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