Thomas J. Ryan

3.3k total citations
37 papers, 1.5k citations indexed

About

Thomas J. Ryan is a scholar working on Cardiology and Cardiovascular Medicine, Radiology, Nuclear Medicine and Imaging and Molecular Biology. According to data from OpenAlex, Thomas J. Ryan has authored 37 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Cardiology and Cardiovascular Medicine, 11 papers in Radiology, Nuclear Medicine and Imaging and 6 papers in Molecular Biology. Recurrent topics in Thomas J. Ryan's work include Cardiac Imaging and Diagnostics (11 papers), Cardiovascular Function and Risk Factors (6 papers) and Cardiomyopathy and Myosin Studies (3 papers). Thomas J. Ryan is often cited by papers focused on Cardiac Imaging and Diagnostics (11 papers), Cardiovascular Function and Risk Factors (6 papers) and Cardiomyopathy and Myosin Studies (3 papers). Thomas J. Ryan collaborates with scholars based in United States, Australia and Canada. Thomas J. Ryan's co-authors include Harvey Feigenbaum, William F. Armstrong, Charles F. Presti, Stephen G. Sawada, James L. Ritchie, Timothy J. Gardner, Melvin D. Cheitlin, Raymond J. Gibbons, Richard O. Russell and Sidney C. Smith and has published in prestigious journals such as New England Journal of Medicine, Journal of Biological Chemistry and Circulation.

In The Last Decade

Thomas J. Ryan

33 papers receiving 1.4k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Thomas J. Ryan United States 18 804 686 389 164 151 37 1.5k
W.R.M. Aengevaeren Netherlands 22 736 0.9× 359 0.5× 842 2.2× 170 1.0× 126 0.8× 58 1.6k
Michael Kontos Greece 16 339 0.4× 313 0.5× 349 0.9× 169 1.0× 245 1.6× 57 1.2k
Joseph Swafford United States 13 856 1.1× 300 0.4× 182 0.5× 192 1.2× 130 0.9× 28 1.2k
David de Bono United Kingdom 14 754 0.9× 333 0.5× 449 1.2× 106 0.6× 54 0.4× 45 1.2k
Jennifer Cautela France 22 770 1.0× 174 0.3× 224 0.6× 346 2.1× 170 1.1× 48 1.7k
Takahisa Sawada Japan 19 661 0.8× 244 0.4× 447 1.1× 186 1.1× 104 0.7× 123 1.3k
Michel G. Khouri United States 22 1.3k 1.7× 391 0.6× 162 0.4× 296 1.8× 292 1.9× 57 1.8k
Sebastian T. Palmeri United States 22 1.9k 2.4× 755 1.1× 729 1.9× 190 1.2× 173 1.1× 52 2.5k
Igal A. Sebag Canada 18 1.9k 2.4× 715 1.0× 147 0.4× 322 2.0× 191 1.3× 29 2.3k
Sanjeev Aggarwal United States 27 1.2k 1.4× 183 0.3× 708 1.8× 862 5.3× 176 1.2× 157 2.2k

Countries citing papers authored by Thomas J. Ryan

Since Specialization
Citations

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

Fields of papers citing papers by Thomas J. Ryan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Thomas J. Ryan. 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 Thomas J. Ryan. The network helps show where Thomas J. Ryan may publish in the future.

Co-authorship network of co-authors of Thomas J. Ryan

This figure shows the co-authorship network connecting the top 25 collaborators of Thomas J. Ryan. A scholar is included among the top collaborators of Thomas J. Ryan 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 Thomas J. Ryan. Thomas J. Ryan 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.
Yamanaka, Katsuhiro, Muhammad Aftab, Thomas J. Ryan, et al.. (2018). Optimized induction of beta common receptor enhances the neuroprotective function of erythropoietin in spinal cord ischemic injury. Journal of Thoracic and Cardiovascular Surgery. 155(6). 2505–2516. 15 indexed citations
2.
White, Leigh, et al.. (2018). Advanced airway management in out of hospital cardiac arrest: A systematic review and meta-analysis. The American Journal of Emergency Medicine. 36(12). 2298–2306. 21 indexed citations
3.
Yamanaka, Katsuhiro, Muhammad Aftab, Thomas J. Ryan, et al.. (2018). Pretreatment With Diazoxide Attenuates Spinal Cord Ischemia-Reperfusion Injury Through Signaling Transducer and Activator of Transcription 3 Pathway. The Annals of Thoracic Surgery. 107(3). 733–739. 9 indexed citations
4.
Yamanaka, Katsuhiro, Muhammad Aftab, Thomas J. Ryan, et al.. (2018). Synergistic Reduction of Apoptosis With Diazoxide and Erythropoietin in Spinal Cord Ischemic Injury. The Annals of Thoracic Surgery. 106(6). 1751–1758. 10 indexed citations
5.
Melhuish, Thomas, et al.. (2017). Apnoeic oxygenation during intubation in the intensive care unit: A systematic review and meta-analysis. Heart & Lung. 46(6). 452–457. 23 indexed citations
6.
Schwan, Jonas, Thomas J. Ryan, Óscar Bártulos, et al.. (2016). Anisotropic engineered heart tissue made from laser-cut decellularized myocardium. Scientific Reports. 6(1). 32068–32068. 71 indexed citations
7.
Narula, Jagat, Y. Chandrashekhar, Vasken Dilsizian, et al.. (2015). COCATS 4 Task Force 4: Training in Multimodality Imaging. Journal of the American College of Cardiology. 65(17). 1778–1785. 19 indexed citations
8.
Ryan, Thomas J.. (2013). Understanding Animal Abuse: A Sociological Analysis. Journal of Animal Ethics. 3(2). 228–231. 11 indexed citations
9.
Thomas, James D., William A. Zoghbi, George Beller, et al.. (2008). ACCF 2008 Training Statement on Multimodality Noninvasive Cardiovascular Imaging. Journal of the American College of Cardiology. 53(1). 125–146. 42 indexed citations
10.
Eisele, Leslie E., et al.. (2006). Characterization of Human γ-glutamyl hydrolase in solution demonstrates that the enzyme is a non-dissociating homodimer. Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics. 1764(9). 1479–1486. 5 indexed citations
11.
Schneider, Erasmus & Thomas J. Ryan. (2006). Gamma-glutamyl hydrolase and drug resistance. Clinica Chimica Acta. 374(1-2). 25–32. 50 indexed citations
12.
Califf, Robert M., Thomas J. Ryan, Pamela S. Douglas, & Pascal J. Goldschmidt‐Clermont. (2004). A time of accelerated change in academic cardiovascular medicine. Journal of the American College of Cardiology. 44(10). 1957–1965.
13.
14.
Kisanuki, Akira, Douglas S. Segar, Thomas J. Ryan, et al.. (2001). Arbutamine stimulation detects viable myocardium 4 weeks after coronary occlusion. Journal of the American Society of Echocardiography. 14(2). 138–148. 1 indexed citations
15.
Shubrooks, Samuel J., Winthrop D. Piper, William A. Bradley, et al.. (2000). Safety and efficacy of percutaneous coronary interventions performed immediately after diagnostic catheterization in northern New England and comparison with similar procedures performed later. The American Journal of Cardiology. 86(1). 41–45. 19 indexed citations
16.
Bates, John, et al.. (1996). A systematic approach to echocardiographic image acquisition and three-dimensional reconstruction with a subxiphoid rotational scan. Journal of the American Society of Echocardiography. 9(3). 257–265. 11 indexed citations
17.
Sawada, Stephen G., Douglas S. Segar, Thomas J. Ryan, et al.. (1994). Dobutamine stress echocardiography: Detection of coronary artery disease in patients with dilated cardiomyopathy. Journal of the American College of Cardiology. 24(4). 934–939. 72 indexed citations
18.
Lewis, Stephen J., Stephen G. Sawada, Thomas J. Ryan, et al.. (1991). Segmental wall motion abnormalities in the absence of clinically documented myocardial infarction: Clinical significance and evidence of hibernating myocardium. American Heart Journal. 121(4). 1088–1094. 57 indexed citations
19.
Sawada, Stephen G., Walter E. Judson, Thomas J. Ryan, William F. Armstrong, & Harvey Feigenbaum. (1989). Upright bicycle exercise echocardiography after coronary artery bypass grafting. The American Journal of Cardiology. 64(18). 1123–1129. 38 indexed citations
20.
Presti, Charles F., Raffaele Gentile, William F. Armstrong, et al.. (1988). Improvement in regional wall motion after percutaneous transluminal coronary angioplasty during acute myocardial infarction: Utility of two-dimensional echocardiography. American Heart Journal. 115(6). 1149–1155. 31 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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