Robert D. Okada
About
Robert D. Okada is a scholar working on Radiology, Nuclear Medicine and Imaging, Cardiology and Cardiovascular Medicine and Surgery.
According to data from OpenAlex, Robert D. Okada has authored 184 papers receiving a total of 5.9k indexed citations (citations by other indexed papers that have themselves been cited), including 149 papers in Radiology, Nuclear Medicine and Imaging, 82 papers in Cardiology and Cardiovascular Medicine and 48 papers in Surgery. Recurrent topics in Robert D. Okada's work include Cardiac Imaging and Diagnostics (130 papers), Advanced MRI Techniques and Applications (40 papers) and Radiopharmaceutical Chemistry and Applications (28 papers). Robert D. Okada is often cited by papers focused on Cardiac Imaging and Diagnostics (130 papers), Advanced MRI Techniques and Applications (40 papers) and Radiopharmaceutical Chemistry and Applications (28 papers). Robert D. Okada collaborates with scholars based in United States, Germany and Japan. Robert D. Okada's co-authors include Gerald M. Pohost, H. William Strausś, Charles A. Boucher, Charles A. Boucher, John Newell, David K. Glover, Sanjiv Kaul, Peter C. Block, David C. Brewster and Stephen J. Williams and has published in prestigious journals such as New England Journal of Medicine, Circulation and Journal of Clinical Investigation.
In The Last Decade
Robert D. Okada
182 papers receiving 5.5k citations
Hit Papers
Peers — A (Enhanced Table)
Peers by citation overlap · career bar shows stage (early→late) cites · hero ref
| Name | h | Career | Trend | Papers | Cites | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Robert D. Okada United States | 40 | 4.4k | 3.6k | 1.6k | 1.3k | 714 | 184 | 5.9k | ||
| Denny D. Watson United States | 47 | 6.0k 1.4× | 4.4k 1.2× | 2.0k 1.2× | 1.7k 1.3× | 453 0.6× | 163 | 7.9k | ||
| George Beller United States | 49 | 5.7k 1.3× | 4.9k 1.4× | 2.1k 1.3× | 1.3k 1.1× | 497 0.7× | 219 | 8.2k | ||
| Abdulmassih S. Iskandrian United States | 39 | 3.7k 0.8× | 3.8k 1.1× | 1.5k 1.0× | 863 0.7× | 897 1.3× | 213 | 5.6k | ||
| Elias H. Botvinick United States | 41 | 3.2k 0.7× | 3.5k 1.0× | 1.0k 0.6× | 775 0.6× | 330 0.5× | 176 | 5.4k | ||
| Richard C. Brunken United States | 36 | 4.3k 1.0× | 3.3k 0.9× | 1.3k 0.8× | 798 0.6× | 470 0.7× | 103 | 6.0k | ||
| Frans J.Th. Wackers United States | 36 | 3.3k 0.7× | 3.2k 0.9× | 978 0.6× | 566 0.4× | 376 0.5× | 103 | 5.1k | ||
| Charles A. Boucher United States | 36 | 2.9k 0.7× | 2.5k 0.7× | 1.1k 0.7× | 781 0.6× | 639 0.9× | 112 | 4.4k | ||
| Robert W. Parkey United States | 46 | 3.9k 0.9× | 3.3k 0.9× | 1.6k 1.0× | 733 0.6× | 565 0.8× | 189 | 6.7k | ||
| Francis J. Klocke United States | 44 | 8.1k 1.8× | 8.0k 2.2× | 2.6k 1.6× | 1.2k 0.9× | 531 0.7× | 110 | 11.9k | ||
| H.J.C. Swan United States | 41 | 2.9k 0.7× | 4.7k 1.3× | 2.7k 1.7× | 894 0.7× | 910 1.3× | 123 | 7.0k |
Countries citing papers authored by Robert D. Okada
Since
Specialization
Citations
This map shows the geographic impact of Robert D. 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 Robert D. Okada with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Robert D. Okada more than expected).
Fields of papers citing papers by Robert D. Okada
Since
Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences
This network shows the impact of papers produced by Robert D. 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 Robert D. Okada. The network helps show where Robert D. Okada may publish in the future.
Co-authorship network of co-authors of Robert D. Okada
This figure shows the co-authorship network connecting the top 25 collaborators of Robert D. Okada. A scholar is included among the top collaborators of Robert D. 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 Robert D. Okada. Robert D. Okada is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
1.
Okada, David R., Gerald Johnson, & Robert D. Okada. (2014). Myocardial clearance of technetium-99m-teboroxime in reperfused injured canine myocardium. EJNMMI Research. 4(1). 42–42.
2.
Okada, David R., Robert D. Okada, & Robert O. Bonow. (2011). Beta Adrenergic Receptor Blockade Causing Severe Left Ventricular Systolic Dysfunction during Dobutamine Stress Echocardiography in a Patient with No Structural Heart Disease. Echocardiography. 29(2). E39–42.
3.
Okada, David R., et al.. (2003). Myocardial kinetics of Tc-99m glucarate in low flow, hypoxia, and aglycemia. Journal of Nuclear Cardiology. 10(2). 168–176.
4.
Okada, Robert D., et al.. (1996). Technetium 99m—Q12 kinetics in perfused rat myocardium: Effects of hypoxia and low flow. American Heart Journal. 132(1). 108–115.
5.
Johnson, Gerald, et al.. (1996). HL91-technetium-99m: Kinetics of a new hypoxia avid imaging agent in normal and ischemic myocardium as assessed by gamma camera images. Journal of the American College of Cardiology. 27(2). 407–407.
6.
Glover, David K. & Robert D. Okada. (1993). Myocardial technetium 99m sestamibi kinetics after reperfusion in a canine model. American Heart Journal. 125(3). 657–666.
7.
Okada, Robert D., Judith H. Murphy, Charles A. Boucher, et al.. (1992). Relationship between septal perfusion, viability, and motion before and after coronary artery bypass surgery. American Heart Journal. 124(5). 1190–1195.
8.
Okada, Robert D., et al.. (1991). Myocardial TC-99m-teboroxime (caroiotec, SQ30217) clearance is reduced in ischemic myocardium due to a combination of hypoxic and low flow factors. Journal of the American College of Cardiology. 17(2). A286–A286.
9.
Yasuda, Tsunehiro, Robert D. Okada, Robert C. Leinbach, et al.. (1990). Serial evaluation of right ventricular dysfunction associated with acute inferior myocardial infarction. American Heart Journal. 119(4). 816–822.
10.
Miller, D.Douglas, Donald L. Johnston, John Newell, et al.. (1989). Effect of hyperosmotic mannitol on magnetic resonance relaxation parameters in reperfused canine myocardial infarction. Magnetic Resonance Imaging. 7(1). 79–88.
11.
Ruddy, Terrence D., John B. Gill, Dianne M. Finkelstein, et al.. (1987). Myocardial uptake and clearance of thallium-201 in normal subjects: Comparison of dipyridamole-induced hyperemia with exercise stress. Journal of the American College of Cardiology. 10(3). 547–556.
12.
Kaul, Sanjiv, David A. Chesler, Robert D. Okada, & Charles A. Boucher. (1987). Computer versus visual analysis of exercise thallium-201 images: A critical appraisal in 325 patients with chest pain. American Heart Journal. 114(5). 1129–1137.
13.
Kaul, Sanjiv, et al.. (1986). Regional variability in the myocardial clearance of thallium-201 and its importance in determining the presence or absence of coronary artery disease. Journal of the American College of Cardiology. 8(1). 95–100.
14.
Kaul, Sanjiv, Charles A. Boucher, John Newell, et al.. (1986). Determination of the quantitative thallium imaging variables that optimize detection of coronary artery disease. Journal of the American College of Cardiology. 7(3). 527–537.
15.
Okada, Robert D., Charles A. Boucher, & Gerald M. Pohost. (1985). Quantitative split dose thallium-201 imaging with exercise: A technique for obtaining rest and exercise perfusion images in one setting and markedly reducing the study time. Journal of the American College of Cardiology. 5(1). 70–77.
16.
Okada, Robert D. & Gerald M. Pohost. (1984). Effect of decreased blood flow and ischemia on myocardial thallium clearance. Journal of the American College of Cardiology. 3(3). 744–750.
17.
Okada, Robert D.. (1984). Kinetics of thallium-201 in reperfused canine myocardium after coronary artery occlusion. Journal of the American College of Cardiology. 3(5). 1245–1251.
18.
Osbakken, Mary, Robert D. Okada, Charles A. Boucher, H. William Strausś, & Gerald M. Pohost. (1984). Comparison of exercise perfusion and ventricular function imaging: An analysis of factors affecting the diagnostic accuracy of each technique. Journal of the American College of Cardiology. 3(2). 272–283.
19.
Kaul, Sanjiv, Natesa G. Pandian, Robert D. Okada, Gerald M. Pohost, & Arthur E. Weyman. (1984). Contrast echocardiography in acute myocardial ischemia: I. In vivo determination of total left ventricular “area at risk”. Journal of the American College of Cardiology. 4(6). 1272–1282.
20.
Brown, Kenneth A., Charles A. Boucher, Robert D. Okada, et al.. (1983). Prognostic value of exercise thallium-201 imaging in patients presenting for evaluation of chest pain. Journal of the American College of Cardiology. 1(4). 994–1001.
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.
Explore authors with similar magnitude of impact
Breakdown of academic impact, for papers by Denny D. Watson Breakdown of academic impact, for papers by George Beller Breakdown of academic impact, for papers by Abdulmassih S. Iskandrian Breakdown of academic impact, for papers by Elias H. Botvinick Breakdown of academic impact, for papers by Richard C. Brunken Breakdown of academic impact, for papers by Frans J.Th. Wackers Breakdown of academic impact, for papers by Charles A. Boucher Breakdown of academic impact, for papers by Robert W. Parkey Breakdown of academic impact, for papers by Francis J. Klocke Breakdown of academic impact, for papers by H.J.C. Swan