M. J. Ryan

28.3k total citations
61 papers, 825 citations indexed

About

M. J. Ryan is a scholar working on Cardiology and Cardiovascular Medicine, Radiology, Nuclear Medicine and Imaging and Surgery. According to data from OpenAlex, M. J. Ryan has authored 61 papers receiving a total of 825 indexed citations (citations by other indexed papers that have themselves been cited), including 28 papers in Cardiology and Cardiovascular Medicine, 26 papers in Radiology, Nuclear Medicine and Imaging and 21 papers in Surgery. Recurrent topics in M. J. Ryan's work include Cardiac Imaging and Diagnostics (24 papers), Coronary Interventions and Diagnostics (13 papers) and Cardiovascular Function and Risk Factors (11 papers). M. J. Ryan is often cited by papers focused on Cardiac Imaging and Diagnostics (24 papers), Coronary Interventions and Diagnostics (13 papers) and Cardiovascular Function and Risk Factors (11 papers). M. J. Ryan collaborates with scholars based in United Kingdom, United States and Australia. M. J. Ryan's co-authors include Divaka Perera, Amedeo Chiribiri, Howard Ellis, Haseeb Rahman, David J. Webb, Ozan M. Demir, Cian M. Scannell, Hannah McConkey, Michael Marber and Bhavik Modi and has published in prestigious journals such as Circulation, SHILAP Revista de lepidopterología and Journal of the American College of Cardiology.

In The Last Decade

M. J. Ryan

57 papers receiving 811 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
M. J. Ryan United Kingdom 15 453 434 289 103 47 61 825
Sathya Vijayakumar United States 15 1.0k 2.2× 827 1.9× 130 0.4× 67 0.7× 12 0.3× 37 1.5k
Allen A. Holmes United States 12 483 1.1× 525 1.2× 163 0.6× 130 1.3× 22 0.5× 20 1.0k
Rohit E. Bhagwandien Netherlands 18 480 1.1× 400 0.9× 113 0.4× 86 0.8× 71 1.5× 66 961
W. Küpper Germany 18 538 1.2× 352 0.8× 246 0.9× 157 1.5× 15 0.3× 90 1000
Jack T. Cusma United States 16 328 0.7× 441 1.0× 258 0.9× 132 1.3× 15 0.3× 36 709
Jaime L. Shaw United States 17 219 0.5× 512 1.2× 108 0.4× 83 0.8× 7 0.1× 44 1.2k
Can Wu United States 13 143 0.3× 346 0.8× 63 0.2× 49 0.5× 44 0.9× 41 717
Michael O. Zenge Germany 20 381 0.8× 1.0k 2.3× 154 0.5× 109 1.1× 7 0.1× 48 1.3k
Ung Kim South Korea 16 311 0.7× 155 0.4× 380 1.3× 109 1.1× 6 0.1× 89 775
GL Wismer United States 13 219 0.5× 394 0.9× 152 0.5× 47 0.5× 21 0.4× 13 714

Countries citing papers authored by M. J. Ryan

Since Specialization
Citations

This map shows the geographic impact of M. 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 M. 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 M. J. Ryan more than expected).

Fields of papers citing papers by M. J. Ryan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

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

This figure shows the co-authorship network connecting the top 25 collaborators of M. J. Ryan. A scholar is included among the top collaborators of M. 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 M. J. Ryan. M. 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.
Demir, Ozan M., Aish Sinha, Haseeb Rahman, et al.. (2025). Pressure-Derived Indices in the Left Main Coronary Artery: Insights From Comprehensive In Vivo Hemodynamic Studies of Diseased and Unobstructed Vessels. Circulation Cardiovascular Interventions. 18(7). e015320–e015320. 3 indexed citations
2.
Morgan, Holly, M. J. Ryan, Rachel Bastiaenen, et al.. (2025). Exploring postmortem practices for cardiac device interrogation in the UK. Heart. heartjnl–2025.
3.
Ryan, M. J., et al.. (2025). Genitourinary Aspergillosis in Solid Organ Transplant Recipients. American Journal of Transplantation. 25(8). S835–S835.
4.
Ryan, M. J., Alexander G. Truesdell, Gavin J. Murphy, et al.. (2025). Revascularization in Ischemic Left Ventricular Dysfunction. JACC: Cardiovascular Interventions. 18(24). 2977–2994.
5.
Ryan, M. J., Mark C. Petrie, Evangelos Kontopantelis, et al.. (2025). Medical therapy and outcomes in REVIVED-BCIS2 and STICHES: an individual patient data analysis. European Heart Journal. 46(22). 2052–2062. 5 indexed citations
6.
Morgan, Holly, Muhummad Sohaib Nazir, Gerry P McCann, et al.. (2024). Prognostic impact of inducible ischaemia in ischaemic left ventricular dysfunction: the REVIVED-BCIS2 trial. European Heart Journal. 46(5). 487–490. 3 indexed citations
7.
Ezad, Saad, M. J. Ryan, Nicholas Barrett, et al.. (2024). Left ventricular unloading in patients supported with veno-arterial extra corporeal membrane oxygenation; an international EuroELSO survey. Perfusion. 39(1_suppl). 13S–22S. 1 indexed citations
8.
Ryan, M. J., Saad Ezad, Ian Webb, et al.. (2024). Percutaneous Left Ventricular Unloading During High-Risk Coronary Intervention: Rationale and Design of the CHIP-BCIS3 Randomized Controlled Trial. Circulation Cardiovascular Interventions. 17(3). e013367–e013367. 4 indexed citations
9.
Morgan, Holly, Amedeo Chiribiri, Salik Nazir, et al.. (2023). Scar characterisation to predict arrhythmia and death in ischaemic cardiomyopathy: insights from the REVIVED trial. European Heart Journal. 44(Supplement_2). 1 indexed citations
10.
O’Gallagher, Kevin, Francesca Puledda, Owen O’Daly, et al.. (2021). Neuronal nitric oxide synthase regulates regional brain perfusion in healthy humans. Cardiovascular Research. 118(5). 1321–1329. 30 indexed citations
11.
Ryan, M. J., Holly Morgan, Amedeo Chiribiri, et al.. (2021). Myocardial viability testing: all STICHed up, or about to be REVIVED?. European Heart Journal. 43(2). 118–126. 25 indexed citations
12.
Ryan, M. J., Holly Morgan, Mark C. Petrie, & Divaka Perera. (2021). Coronary revascularisation in patients with ischaemic cardiomyopathy. Heart. 107(8). 612–618. 7 indexed citations
13.
Demir, Ozan M., M. J. Ryan, Nishita Desai, et al.. (2021). Impact and Determinants of High-Sensitivity Cardiac Troponin-T Concentration in Patients With COVID-19 Admitted to Critical Care. The American Journal of Cardiology. 147. 129–136. 13 indexed citations
14.
Gill, Stephen D., Julian Stella, Tim Baker, et al.. (2021). Gender differences in female and male Australian Football injuries — A prospective observational study of emergency department presentations. Journal of science and medicine in sport. 24(7). 670–676. 10 indexed citations
15.
Moehring, Rebekah W., Michael David, Keith Hamilton, et al.. (2021). A modified Delphi approach to develop a trial protocol for antibiotic de-escalation in patients with suspected sepsis. SHILAP Revista de lepidopterología. 1(1). e44–e44. 1 indexed citations
16.
Ryan, M. J., Kevin O’Gallagher, Natalia Briceno, et al.. (2020). 32 Does ‘real-world’ mechanical circulatory support match randomised controlled trials? The United Kingdom impella (Ukpella) registry. A27.2–A28. 1 indexed citations
17.
Modi, Bhavik, Haseeb Rahman, M. J. Ryan, et al.. (2020). Comparison of fractional flow reserve, instantaneous wave-free ratio and a novel technique for assessing coronary arteries with serial lesions. EuroIntervention. 16(7). 577–583. 9 indexed citations
18.
Rahman, Haseeb, Ozan M. Demir, M. J. Ryan, et al.. (2020). Mechanisms of exertional angina in patients with normal coronary arteries. Clinical Medicine. 20(2). s44–s45. 1 indexed citations
19.
20.
Ryan, M. J., Natalia Briceno, & Divaka Perera. (2019). Mechanical Circulatory Support in the Cardiac Catheterization Laboratory for Cardiogenic Shock. Korean Circulation Journal. 49(3). 197–197. 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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