F Okumachi

734 total citations
35 papers, 577 citations indexed

About

F Okumachi is a scholar working on Cardiology and Cardiovascular Medicine, Pulmonary and Respiratory Medicine and Surgery. According to data from OpenAlex, F Okumachi has authored 35 papers receiving a total of 577 indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Cardiology and Cardiovascular Medicine, 18 papers in Pulmonary and Respiratory Medicine and 14 papers in Surgery. Recurrent topics in F Okumachi's work include Cardiac Valve Diseases and Treatments (14 papers), Cardiac Structural Anomalies and Repair (8 papers) and Congenital Heart Disease Studies (6 papers). F Okumachi is often cited by papers focused on Cardiac Valve Diseases and Treatments (14 papers), Cardiac Structural Anomalies and Repair (8 papers) and Congenital Heart Disease Studies (6 papers). F Okumachi collaborates with scholars based in Japan. F Okumachi's co-authors include Junichi Yoshikawa, K Yoshida, Takashi Akasaka, M Shakudo, K Shiratori, K Koizumi, Hiroshi Kato, Seiichi Takao, Takashi Fukaya and K. Baba and has published in prestigious journals such as Circulation, PubMed and Catheterization and Cardiovascular Diagnosis.

In The Last Decade

F Okumachi

32 papers receiving 538 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
F Okumachi Japan 8 367 251 239 142 111 35 577
Seiichi Takao Japan 5 457 1.2× 145 0.6× 154 0.6× 162 1.1× 118 1.1× 10 578
M Shakudo Japan 14 646 1.8× 311 1.2× 231 1.0× 276 1.9× 150 1.4× 36 810
K Shiratori Japan 6 326 0.9× 115 0.5× 116 0.5× 133 0.9× 68 0.6× 31 423
Rubin Cooper United States 11 231 0.6× 218 0.9× 255 1.1× 256 1.8× 50 0.5× 28 521
Leonard Steinfeld United States 14 363 1.0× 221 0.9× 219 0.9× 277 2.0× 45 0.4× 41 639
Marshall Rowen United States 10 183 0.5× 250 1.0× 414 1.7× 325 2.3× 65 0.6× 15 615
Ellen M. Weinstein United States 9 425 1.2× 187 0.7× 135 0.6× 336 2.4× 54 0.5× 15 601
Yoshio Arakaki Japan 16 560 1.5× 409 1.6× 372 1.6× 240 1.7× 35 0.3× 46 848
Francisco Elbl United States 8 168 0.5× 130 0.5× 138 0.6× 218 1.5× 40 0.4× 28 365
Leon K. Lacquet Netherlands 10 91 0.2× 274 1.1× 158 0.7× 65 0.5× 49 0.4× 17 403

Countries citing papers authored by F Okumachi

Since Specialization
Citations

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

Fields of papers citing papers by F Okumachi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of F Okumachi

This figure shows the co-authorship network connecting the top 25 collaborators of F Okumachi. A scholar is included among the top collaborators of F Okumachi 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 F Okumachi. F Okumachi 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.
Otsuka, Masato, et al.. (1997). Acute myocardial infarction caused by thrombotic occlusion of a coronary aneurysm. Catheterization and Cardiovascular Diagnosis. 41(4). 423–425. 7 indexed citations
2.
Yamagishi, Hiroyuki, et al.. (1997). A Case of Rest Angina due to Microvascular Spasm. Japanese Circulation Journal. 61(1). 87–89. 12 indexed citations
3.
Itagane, Hiroshi, Masato Otsuka, Hiroyuki Yamagishi, et al.. (1997). [Estimation of myocardial viability and clinical significance of reverse redistribution in resting technetium-99m sestamibi myocardial single photon emission computed tomography in patients with acute myocardial infarction].. PubMed. 30(4). 179–88. 2 indexed citations
4.
Yoshikawa, Junichi, M Shakudo, F Okumachi, et al.. (1995). [Adenosine triphosphate loading thallium-201 myocardial scintigraphy: optimal dose and diagnostic accuracy].. PubMed. 25(1). 9–13. 7 indexed citations
5.
Yoshida, K, Takashi Fukaya, M Shakudo, et al.. (1994). [Diagnosis of sinus venosus atrial septal defect by transesophageal color Doppler and two-dimensional echocardiography].. PubMed. 24(3). 221–6. 1 indexed citations
6.
Yoshida, Kiyoshi, Takashi Akasaka, Takeshi Hozumi, et al.. (1992). Intravascular Ultrasound Imaging. In vitro and vivo validation.. Japanese Circulation Journal. 56(6). 572–577. 5 indexed citations
7.
Yoshida, Kiyoshi, et al.. (1991). Infective endocarditis. Analysis of 116 surgically and 26 medically treated patients.. Japanese Circulation Journal. 55(8). 794–798. 6 indexed citations
8.
Yoshida, Kiyoshi, Takeshi Hozumi, Yasuko Yamaura, et al.. (1990). Value of transesophageal color doppler echocardiography in the evaluation of coronary artery anatomy and blood flow.. Japanese Circulation Journal. 54(3). 298–303. 13 indexed citations
9.
Yoshida, Kiyoshi, et al.. (1988). Problems in the management of elderly patients with valvular heart disease.. Japanese Circulation Journal. 52(5). 466–470. 1 indexed citations
10.
Akasaka, Takashi, Junichi Yoshikawa, Keiko Yoshida, et al.. (1988). [Late complications of valve replacement: the benefits of non-invasive assessment].. PubMed. 18(1). 163–78. 1 indexed citations
11.
Akasaka, Takashi, Junichi Yoshikawa, K Yoshida, et al.. (1987). Age-related valvular regurgitation: a study by pulsed Doppler echocardiography.. Circulation. 76(2). 262–265. 110 indexed citations
12.
Shono, Hiroyuki, K. Yoshida, Hiroshi Kato, et al.. (1986). [Value of right ventricular and atrial collapse in identifying cardiac tamponade].. PubMed. 16(3). 627–35. 2 indexed citations
13.
Yoshikawa, Junichi, Kotaro Yoshida, Hiroo Kato, et al.. (1986). [Non-rheumatic multivalvular regurgitation in an older population: a pulsed Doppler echocardiographic study].. PubMed. 16(2). 427–32. 1 indexed citations
14.
Yoshida, K, Junichi Yoshikawa, F Okumachi, et al.. (1985). [Tricuspid regurgitation evaluated by Doppler hepatic vein flow patterns].. PubMed. 15(4). 1157–69. 3 indexed citations
15.
Kato, Hiroo, et al.. (1984). [Treatment of cardiogenic shock and medically refractory left ventricular failure in acute myocardial infarction and acute myocarditis by intraaortic balloon counterpulsation].. PubMed. 93–7. 1 indexed citations
16.
Yoshikawa, Junichi, Yuichiro Takagi, F Okumachi, et al.. (1982). Noninvasive visualization of the dilated main coronary arteries in coronary artery fistulas by cross-sectional echocardiography.. Circulation. 65(3). 600–603. 44 indexed citations
17.
Yoshikawa, Junichi, et al.. (1982). [Criteria for the diagnosis of prolapsed mitral valve using phonocardiography and echocardiography].. PubMed. 12(3). 773–7. 8 indexed citations
18.
Yoshikawa, Junichi, et al.. (1979). Noninvasive Diagnosis of Pseudoaneurysm of the Left Ventricle. Japanese Heart Journal. 20(1). 95–103. 4 indexed citations
19.
Yoshikawa, Junichi, T Owaki, Hiroki Kato, et al.. (1979). Cross-sectional echocardiographic diagnosis of coronary artery aneurysms in patients with the mucocutaneous lymph node syndrome.. Circulation. 59(1). 133–139. 92 indexed citations
20.
Yoshikawa, Junichi, Kiyoshi Yoshida, T Owaki, et al.. (1978). Echocardiographic Features of Congenital Pulmonary Regurgitation. Japanese Heart Journal. 19(1). 58–65. 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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