Igor Klem

5.5k total citations · 1 hit paper
96 papers, 3.6k citations indexed

About

Igor Klem is a scholar working on Cardiology and Cardiovascular Medicine, Radiology, Nuclear Medicine and Imaging and Surgery. According to data from OpenAlex, Igor Klem has authored 96 papers receiving a total of 3.6k indexed citations (citations by other indexed papers that have themselves been cited), including 73 papers in Cardiology and Cardiovascular Medicine, 62 papers in Radiology, Nuclear Medicine and Imaging and 18 papers in Surgery. Recurrent topics in Igor Klem's work include Cardiac Imaging and Diagnostics (58 papers), Advanced MRI Techniques and Applications (33 papers) and Cardiovascular Function and Risk Factors (28 papers). Igor Klem is often cited by papers focused on Cardiac Imaging and Diagnostics (58 papers), Advanced MRI Techniques and Applications (33 papers) and Cardiovascular Function and Risk Factors (28 papers). Igor Klem collaborates with scholars based in United States, Netherlands and United Kingdom. Igor Klem's co-authors include Raymond J. Kim, Robert M. Judd, Michele Parker, Han W. Kim, John F. Heitner, Dipan J. Shah, Jonathan W. Weinsaft, Michael D. Elliott, Peter J. Cawley and Manesh R. Patel and has published in prestigious journals such as Circulation, Journal of the American College of Cardiology and PLoS ONE.

In The Last Decade

Igor Klem

90 papers receiving 3.5k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Detection of Myocardial Damage in Patients With Sarcoidosis

2009 475 citations Peter J. Cawley, John F. Heitner et al. Circulation profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Igor Klem United States	30	2.6k	1.9k	623	460	380	96	3.6k
Denis Agostini France	27	1.6k 0.6×	2.0k 1.1×	505 0.8×	586 1.3×	279 0.7×	75	3.3k
Kai Naßenstein Germany	21	1.5k 0.6×	1.2k 0.7×	359 0.6×	355 0.8×	369 1.0×	103	2.6k
Salvador Borges‐Neto United States	35	2.3k 0.9×	2.6k 1.4×	786 1.3×	541 1.2×	324 0.9×	137	4.1k
Liza Thomas Australia	36	3.9k 1.5×	1.8k 1.0×	528 0.8×	311 0.7×	142 0.4×	213	4.3k
E. Foster United States	9	3.0k 1.1×	1.1k 0.6×	517 0.8×	614 1.3×	136 0.4×	21	3.6k
Peter Ong Germany	30	4.2k 1.6×	3.0k 1.6×	1.8k 2.9×	558 1.2×	364 1.0×	121	5.0k
Panithaya Chareonthaitawee United States	32	1.7k 0.6×	1.4k 0.8×	731 1.2×	572 1.2×	719 1.9×	114	3.2k
Alessia Gimelli Italy	28	1.3k 0.5×	1.8k 0.9×	442 0.7×	272 0.6×	131 0.3×	171	2.6k
Santo Dellegrottaglie Italy	29	2.1k 0.8×	734 0.4×	857 1.4×	964 2.1×	136 0.4×	134	3.3k
Alicia M. Maceira Spain	21	2.8k 1.1×	1.6k 0.8×	435 0.7×	572 1.2×	229 0.6×	61	3.9k

Countries citing papers authored by Igor Klem

Since Specialization

Citations

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

Fields of papers citing papers by Igor Klem

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Igor Klem

This figure shows the co-authorship network connecting the top 25 collaborators of Igor Klem. A scholar is included among the top collaborators of Igor Klem 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 Igor Klem. Igor Klem is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Patel, Jimmy S., Edward A. Graviss, Duc T. Nguyen, et al.. (2025). Stress cardiovascular magnetic resonance imaging in intermediate-risk emergency department patients with abnormal high-sensitivity troponin. Journal of Cardiovascular Magnetic Resonance. 27(1). 101851–101851.

Thomas, Alexandra, Nathaniel S. O’Connell, Carolyn J. Park, et al.. (2023). Cardiovascular impact of near complete estrogen deprivation in premenopausal women with breast cancer: The CROWN study. American Heart Journal. 267. 33–43. 2 indexed citations

Chokesuwattanaskul, Ronpichai, et al.. (2023). Impact of late gadolinium-enhanced cardiac MRI on arrhythmic and mortality outcomes in nonischemic dilated cardiomyopathy: updated systematic review and meta-analysis. Scientific Reports. 13(1). 13775–13775. 16 indexed citations

Jenista, Elizabeth, David C. Wendell, Clerio F. Azevedo, et al.. (2023). Revisiting how we perform late gadolinium enhancement CMR: insights gleaned over 25 years of clinical practice. Journal of Cardiovascular Magnetic Resonance. 25(1). 18–18. 23 indexed citations

Klem, Igor, Michael Klein, Mohammad A. Khan, et al.. (2021). Relationship of LVEF and Myocardial Scar to Long-Term Mortality Risk and Mode of Death in Patients With Nonischemic Cardiomyopathy. Circulation. 143(14). 1343–1358. 65 indexed citations

Thim, Troels, Dirk J. van der Heijden, Igor Klem, et al.. (2021). Instantaneous wave-free ratio guided multivessel revascularisation during percutaneous coronary intervention for acute myocardial infarction: study protocol of the randomised controlled iMODERN trial. BMJ Open. 11(1). e044035–e044035. 6 indexed citations

Hamo, Carine, Sahar S. Abdelmoneim, Saadat Khan, et al.. (2021). OUTpatient intravenous LASix Trial in reducing hospitalization for acute decompensated heart failure (OUTLAST). PLoS ONE. 16(6). e0253014–e0253014. 9 indexed citations

Moreira, Henrique Turin, José Antônio Marin‐Neto, Fawaz Alenezi, et al.. (2020). Early impairment of myocardial deformation assessed by regional speckle-tracking echocardiography in the indeterminate form of Chagas disease without fibrosis detected by cardiac magnetic resonance. PLoS neglected tropical diseases. 14(11). e0008795–e0008795. 14 indexed citations

Khan, Mohammad A., Eric Yang, Yang Zhan, et al.. (2019). Association of left atrial volume index and all-cause mortality in patients referred for routine cardiovascular magnetic resonance: a multicenter study. Journal of Cardiovascular Magnetic Resonance. 21(1). 4–4. 72 indexed citations

10.

Loring, Zak, Brett D. Atwater, Xiaojuan Xia, et al.. (2019). Low lead one ratio predicts clinical outcomes in left bundle branch block. Journal of Cardiovascular Electrophysiology. 30(5). 709–716. 3 indexed citations

11.

Romano, Simone, Robert M. Judd, Raymond J. Kim, et al.. (2018). Feature-Tracking Global Longitudinal Strain Predicts Death in a Multicenter Population of Patients With Ischemic and Nonischemic Dilated Cardiomyopathy Incremental to Ejection Fraction and Late Gadolinium Enhancement. JACC. Cardiovascular imaging. 11(10). 1419–1429. 188 indexed citations

12.

Chattranukulchai, Pairoj, John F. Heitner, Dipan J. Shah, et al.. (2017). The Prevalence, Correlates, and Impact on Cardiac Mortality of Right Ventricular Dysfunction in Nonischemic Cardiomyopathy. JACC. Cardiovascular imaging. 10(10). 1225–1236. 66 indexed citations

13.

Romano, Simone, Robert M. Judd, Raymond J. Kim, et al.. (2017). Left Ventricular Long-Axis Function Assessed with Cardiac Cine MR Imaging Is an Independent Predictor of All-Cause Mortality in Patients with Reduced Ejection Fraction: A Multicenter Study. Radiology. 286(2). 452–460. 20 indexed citations

14.

Marco, Andrea Di, Ignasi Anguera, Matthias Schmitt, et al.. (2016). Late Gadolinium Enhancement and the Risk for Ventricular Arrhythmias or Sudden Death in Dilated Cardiomyopathy. JACC Heart Failure. 5(1). 28–38. 252 indexed citations

15.

Ivanov, Alexander, Saadat Khan, William M. Briggs, et al.. (2016). Importance of papillary muscle infarction detected by cardiac magnetic resonance imaging in predicting cardiovascular events. International Journal of Cardiology. 220. 558–563. 3 indexed citations

16.

Klem, Igor, Christoph Jensen, Raymond Kim, et al.. (2013). ROUTINE CINE-CMR FOR PROSTHESIS ASSOCIATED MITRAL REGURGITATION: A MULTICENTER COMPARISON TO ECHOCARDIOGRAPHY. Journal of the American College of Cardiology. 61(10). E942–E942. 4 indexed citations

17.

Greulich, Simon, Oliver Bruder, Michele Parker, et al.. (2012). Comparison of exercise electrocardiography and stress perfusion CMR for the detection of coronary artery disease in women. Journal of Cardiovascular Magnetic Resonance. 14(1). 45–45. 13 indexed citations

18.

Heitner, John F., Peter J. Cawley, Igor Klem, et al.. (2010). The aorta wall of patients presenting to the emergency department with acute myocardial infarction by cardiac magnetic resonance. Atherosclerosis. 212(1). 166–170. 2 indexed citations

19.

Bruch, Christian, Igor Klem, Günter Breithardt, Thomas Wichter, & Rainer Gradaus. (2007). Diagnostic Usefulness and Prognostic Implications of the Mitral E/E′ Ratio in Patients With Heart Failure and Severe Secondary Mitral Regurgitation. The American Journal of Cardiology. 100(5). 860–865. 56 indexed citations

20.

Klem, Igor, John F. Heitner, Dipan J. Shah, et al.. (2004). 1169-152 Clinical evaluation of patients with suspected coronary artery disease using a multimodality stress magnetic resonance imaging protocol. Journal of the American College of Cardiology. 43(5). A365–A365. 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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