Ralf Koos

3.1k total citations
55 papers, 2.3k citations indexed

About

Ralf Koos is a scholar working on Cardiology and Cardiovascular Medicine, Radiology, Nuclear Medicine and Imaging and Epidemiology. According to data from OpenAlex, Ralf Koos has authored 55 papers receiving a total of 2.3k indexed citations (citations by other indexed papers that have themselves been cited), including 35 papers in Cardiology and Cardiovascular Medicine, 35 papers in Radiology, Nuclear Medicine and Imaging and 12 papers in Epidemiology. Recurrent topics in Ralf Koos's work include Cardiac Imaging and Diagnostics (34 papers), Cardiac Valve Diseases and Treatments (20 papers) and Infective Endocarditis Diagnosis and Management (12 papers). Ralf Koos is often cited by papers focused on Cardiac Imaging and Diagnostics (34 papers), Cardiac Valve Diseases and Treatments (20 papers) and Infective Endocarditis Diagnosis and Management (12 papers). Ralf Koos collaborates with scholars based in Germany, Netherlands and United Kingdom. Ralf Koos's co-authors include Andreas H. Mahnken, Joachim E. Wildberger, Rolf W. Günther, Harald P. Kühl, Rainer Hoffmann, Georg Mühlenbruch, Nikolaus Marx, Leon J. Schurgers, Marcus Katoh and Guido Dohmen and has published in prestigious journals such as Journal of the American College of Cardiology, Radiology and European Heart Journal.

In The Last Decade

Ralf Koos

54 papers receiving 2.2k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ralf Koos Germany	26	1.1k	1.1k	441	433	379	55	2.3k
Afshin Farzaneh‐Far United States	27	1.2k 1.0×	917 0.8×	109 0.2×	121 0.3×	201 0.5×	69	2.2k
C. Michael Wright United States	19	689 0.6×	493 0.4×	103 0.2×	198 0.5×	41 0.1×	25	1.3k
Donald J. Russo United States	7	1.0k 0.9×	2.1k 1.9×	746 1.7×	115 0.3×	74 0.2×	8	2.6k
Nicholas J. Lippolis United States	6	982 0.9×	2.0k 1.8×	715 1.6×	114 0.3×	74 0.2×	6	2.5k
Mieczysław Pasowicz Poland	19	435 0.4×	228 0.2×	61 0.1×	144 0.3×	61 0.2×	74	1.2k
Alexander Sevrukov United States	11	447 0.4×	655 0.6×	223 0.5×	159 0.4×	18 0.0×	23	1.3k
Karsten Pohle Germany	17	1.0k 0.9×	2.4k 2.1×	1.1k 2.4×	251 0.6×	28 0.1×	28	3.1k
Carsten Rist Germany	23	541 0.5×	2.0k 1.8×	1.1k 2.6×	464 1.1×	20 0.1×	39	2.9k
Sadako Motoyama Japan	22	1.5k 1.3×	2.8k 2.5×	780 1.8×	147 0.3×	51 0.1×	62	3.6k
Masayoshi Sarai Japan	21	1.4k 1.2×	2.7k 2.4×	787 1.8×	152 0.4×	53 0.1×	80	3.5k

Countries citing papers authored by Ralf Koos

Since Specialization

Citations

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

Fields of papers citing papers by Ralf Koos

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ralf Koos

This figure shows the co-authorship network connecting the top 25 collaborators of Ralf Koos. A scholar is included among the top collaborators of Ralf Koos 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 Ralf Koos. Ralf Koos 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

Koos, Ralf, Sebastian Reinartz, Andreas H. Mahnken, et al.. (2013). Impact of aortic valve calcification severity and impaired left ventricular function on 3-year results of patients undergoing transcatheter aortic valve replacement. European Radiology. 23(12). 3253–3261. 13 indexed citations

Altiok, Ertunc, Sonja Tiemann, Michael Becker, et al.. (2013). Myocardial Deformation Imaging by Two-Dimensional Speckle-Tracking Echocardiography for Prediction of Global and Segmental Functional Changes after Acute Myocardial Infarction: A Comparison with Late Gadolinium Enhancement Cardiac Magnetic Resonance. Journal of the American Society of Echocardiography. 27(3). 249–257. 58 indexed citations

Koos, Ralf, Andreas H. Mahnken, Nikolaus Marx, & Vincent Brandenburg. (2012). SCLEROSTIN AS POTENTIAL NOVEL BIOMARKER FOR AORTIC VALVE CALCIFICATION. Journal of the American College of Cardiology. 59(13). E2007–E2007. 4 indexed citations

Altiok, Ertunc, Mirja Neizel, Sonja Tiemann, et al.. (2012). Quantitative Analysis of Endocardial and Epicardial Left Ventricular Myocardial Deformation—Comparison of Strain-Encoded Cardiac Magnetic Resonance Imaging with Two-Dimensional Speckle-Tracking Echocardiography. Journal of the American Society of Echocardiography. 25(11). 1179–1188. 41 indexed citations

Becker, Michael, Ertunc Altiok, Christina Ocklenburg, et al.. (2011). LAYER SPECIFIC ANALYSIS OF MYOCARDIAL FUNCTION TO PREDICT REVERSIBLE ISCHEMIC DYSFUNCTION IN INTERMEDIATE VIABILITY BY CEMRI. Journal of the American College of Cardiology. 57(14). E649–E649. 1 indexed citations

Koos, Ralf, Ertunc Altiok, Andreas H. Mahnken, et al.. (2011). Evaluation of aortic root for definition of prosthesis size by magnetic resonance imaging and cardiac computed tomography: Implications for transcatheter aortic valve implantation. International Journal of Cardiology. 158(3). 353–358. 70 indexed citations

Koos, Ralf, Ertunc Altiok, Mirja Neizel, et al.. (2011). Layer-specific strain-encoded MRI for the evaluation of left ventricular function and infarct transmurality in patients with chronic coronary artery disease. International Journal of Cardiology. 166(1). 85–89. 33 indexed citations

Krombach, Gabriele A., Ralf Koos, Rainer Hoffmann, et al.. (2010). Functional cardiac MR imaging with true fast imaging with steady-state free precession before and after intravenous injection of contrast medium: comparison of image quality and accuracy. European Radiology. 21(4). 702–711. 10 indexed citations

Koos, Ralf, Jörg Schröder, & Harald P. Kühl. (2009). Acute viral pericarditis without typical electrocardiographic changes assessed by cardiac magnetic resonance imaging. European Heart Journal. 30(23). 2844–2844. 9 indexed citations

10.

Cranenburg, Ellen C.M., Cees Vermeer, Ralf Koos, et al.. (2008). The Circulating Inactive Form of Matrix Gla Protein (ucMGP) as a Biomarker for Cardiovascular Calcification. Journal of Vascular Research. 45(5). 427–436. 140 indexed citations

11.

Mahnken, Andreas H., Stefan Lautenschläger, Dominik Fritz, Ralf Koos, & Michael Scheuering. (2008). Perfusion weighted color maps for enhanced visualization of myocardial infarction by MSCT: preliminary experience. International journal of cardiac imaging. 24(8). 883–890. 16 indexed citations

12.

Koos, Ralf, Mirja Neizel, Georg Schummers, et al.. (2008). Feasibility and initial experience of assessment of mechanical dyssynchrony using cardiovascular magnetic resonance and semi-automatic border detection. Journal of Cardiovascular Magnetic Resonance. 10(1). 49–49. 27 indexed citations

13.

Mahnken, Andreas H., Philipp Bruners, S Stanzel, et al.. (2008). Functional imaging in the assessment of myocardial infarction: MR imaging vs. MDCT vs. SPECT. European Journal of Radiology. 71(3). 480–485. 14 indexed citations

14.

Mahnken, Andreas H., Georg Mühlenbruch, Ralf Koos, et al.. (2006). Automated vs. manual assessment of left ventricular function in cardiac multidetector row computed tomography: comparison with magnetic resonance imaging. European Radiology. 16(7). 1416–1423. 57 indexed citations

15.

Mahnken, Andreas H., Joachim E. Wildberger, Ralf Koos, & Rolf W. Günther. (2005). Multislice Spiral Computed Tomography of the Heart: Technique, Current Applications, and Perspective. CardioVascular and Interventional Radiology. 28(4). 388–399. 12 indexed citations

16.

Mühlenbruch, Georg, Christoph Thomas, Joachim E. Wildberger, et al.. (2005). Effect of Varying Slice Thickness on Coronary Calcium Scoring With Multislice Computed Tomography in Vitro and in Vivo. Investigative Radiology. 40(11). 695–699. 53 indexed citations

17.

Mahnken, Andreas H., Georg Mühlenbruch, Ralf Koos, et al.. (2005). Influence of a small field-of-view size on the detection of coronary artery calcifications with MSCT: in vitro and in vivo study. European Radiology. 16(2). 358–364. 12 indexed citations

18.

Koos, Ralf, Andreas H. Mahnken, Anil M. Sinha, et al.. (2004). Preliminary experience in the assessment of aortic valve calcification by ECG-gated multislice spiral computed tomography. International Journal of Cardiology. 102(2). 195–200. 5 indexed citations

19.

Koos, Ralf, Anil‐Martin Sinha, Kai U. Markus, et al.. (2004). Comparison of left ventricular lead placement via the coronary venous approach versus lateral thoracotomy in patients receiving cardiac resynchronization therapy. The American Journal of Cardiology. 94(1). 59–63. 69 indexed citations

20.

Mahnken, Andreas H., Ernst Klotz, Anja Hennemuth, et al.. (2003). Measurement of cardiac output from a test-bolus injection in multislice computed tomography. European Radiology. 13(11). 2498–2504. 49 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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