Thomas Ryan
- Cardiology and Cardiovascular Medicine top 0.05%
- Cardiovascular Function and Risk Factors 42
- Cardiac, Anesthesia and Surgical Outcomes 36
- Cardiac Valve Diseases and Treatments 27
- Radiology, Nuclear Medicine and Imaging top 0.05%
- Cardiac Imaging and Diagnostics 62
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- Ultrasound in Clinical Applications 12
- Epidemiology top 0.2%
- Sepsis Diagnosis and Treatment 14
- Infectious Diseases top 0.5%
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- Immune Response and Inflammation 15
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- Coronary Interventions and Diagnostics 14
- Co-authors
- Neil J. WeissmanSanjiv KaulMario S. VeraniJohn A. RumbergerDudley J. PennellWarren K. LaskeyManuel D. CerqueiraAlice K. Jacobs
- Cited by
- Cardiology and Cardiovascular MedicineRadiology, Nuclear Medicine and ImagingCritical Care and Intensive Care Medicine
- Journals
- Journal of the American College of Cardiology (33 papers)Journal of the American Society of Echocardiography (19 papers)American Heart Journal (12 papers)
- Partner nations
- United StatesIrelandCanada
In The Last Decade
Thomas Ryan
205 papers receiving 18.8k citations
Hit Papers
Peers
Comparison fields: 5 of 191
- Cardiology and Cardiovascular Medicine 11.2k
- Radiology, Nuclear Medicine and Imaging 8.1k
- Critical Care and Intensive Care Medicine 988
- Epidemiology 4.9k
- Infectious Diseases 2.2k
Countries citing papers authored by Thomas Ryan
This map shows the geographic impact of Thomas 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 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 Ryan more than expected).
Fields of papers citing papers by Thomas Ryan
This network shows the impact of papers produced by Thomas 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 Ryan. The network helps show where Thomas Ryan may publish in the future.
Co-authorship network
The 25 scholars most cited alongside Thomas Ryan, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
| # | Work | ||
|---|---|---|---|
| 1 | 2025 | 0 | |
| 2 | 2020 | 9 | |
| 3 | 2019 | 4 | |
| 4 | 2018 | 4 | |
| 5 | 2018 | 2 | |
| 6 | 2017 | 1 | |
| 7 | 2016 | 1 | |
| 8 | 2016 | 26 | |
| 9 | 2012 | 2 | |
| 10 | 2011 | 4 | |
| 11 | 2011 | 111 | |
| 12 | 2007 | 109 | |
| 13 | 2006 | 92 | |
| 14 | 2004 | 51 | |
| 15 | 1999 | 122 | |
| 16 | 1994 | 30 | |
| 17 | 1994 | 33 | |
| 18 | Optimizing Cache Performance. | 1990 | 1 |
| 19 | 1990 | 43 | |
| 20 | 1985 | 375 |
About Thomas Ryan
Thomas Ryan is a scholar working on Cardiology and Cardiovascular Medicine, Critical Care and Intensive Care Medicine and Radiology, Nuclear Medicine and Imaging, having authored 214 papers that have together received 19.5k indexed citations. Recurring topics across this work include Cardiac Imaging and Diagnostics (62 papers), Cardiovascular Function and Risk Factors (42 papers), Cardiac, Anesthesia and Surgical Outcomes (36 papers), Cardiac Valve Diseases and Treatments (27 papers), Immune Response and Inflammation (15 papers), Coronary Interventions and Diagnostics (14 papers), Sepsis Diagnosis and Treatment (14 papers) and Ultrasound in Clinical Applications (12 papers). The work is most often cited by research in Cardiology and Cardiovascular Medicine (11.2k citations), Radiology, Nuclear Medicine and Imaging (8.1k citations) and Critical Care and Intensive Care Medicine (988 citations). Thomas Ryan has collaborated with scholars based in United States, Ireland and Canada. Frequent co-authors include Neil J. Weissman, Sanjiv Kaul, Mario S. Verani, John A. Rumberger, Dudley J. Pennell, Warren K. Laskey, Manuel D. Cerqueira, Alice K. Jacobs, Vasken Dilsizian and Vance G. Fowler. Their work appears in journals such as Journal of the American College of Cardiology, Journal of the American Society of Echocardiography, American Heart Journal, Critical Care Medicine and The American Journal of Cardiology.
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.