Dirk Graafen

527 total citations
23 papers, 365 citations indexed

About

Dirk Graafen is a scholar working on Radiology, Nuclear Medicine and Imaging, Biomedical Engineering and Cardiology and Cardiovascular Medicine. According to data from OpenAlex, Dirk Graafen has authored 23 papers receiving a total of 365 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Radiology, Nuclear Medicine and Imaging, 11 papers in Biomedical Engineering and 5 papers in Cardiology and Cardiovascular Medicine. Recurrent topics in Dirk Graafen's work include Advanced X-ray and CT Imaging (11 papers), Radiation Dose and Imaging (10 papers) and Cardiac Imaging and Diagnostics (8 papers). Dirk Graafen is often cited by papers focused on Advanced X-ray and CT Imaging (11 papers), Radiation Dose and Imaging (10 papers) and Cardiac Imaging and Diagnostics (8 papers). Dirk Graafen collaborates with scholars based in Germany, United States and Hungary. Dirk Graafen's co-authors include Roman Kloeckner, Tilman Emrich, Moritz C. Halfmann, Wolfgang Schreiber, Lukáš Müller, Christoph Düber, Kerstin Münnemann, Yang Yang, María Belén Franzoni and H. W. Spieß and has published in prestigious journals such as Radiology, Physical Chemistry Chemical Physics and Journal of Hepatology.

In The Last Decade

Dirk Graafen

22 papers receiving 360 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Dirk Graafen Germany 11 219 183 59 54 38 23 365
Curtis N. Wiens United States 12 233 1.1× 46 0.3× 39 0.7× 44 0.8× 39 1.0× 22 372
Fabian Lohöfer Germany 14 304 1.4× 89 0.5× 31 0.5× 32 0.6× 97 2.6× 36 535
Nobuya Higuchi United States 9 344 1.6× 114 0.6× 36 0.6× 26 0.5× 33 0.9× 14 443
Tetsuya Wakayama Japan 14 278 1.3× 53 0.3× 43 0.7× 86 1.6× 32 0.8× 44 443
Edelman Rr United States 9 241 1.1× 39 0.2× 105 1.8× 28 0.5× 113 3.0× 20 468
Peter Erhart Switzerland 10 321 1.5× 129 0.7× 12 0.2× 8 0.1× 66 1.7× 22 404
Chikako Fujioka Japan 14 838 3.8× 606 3.3× 40 0.7× 18 0.3× 99 2.6× 44 953
Jouke Smink Netherlands 15 731 3.3× 76 0.4× 18 0.3× 25 0.5× 78 2.1× 43 826
Jan De Becker Netherlands 12 472 2.2× 46 0.3× 60 1.0× 8 0.1× 114 3.0× 15 614

Countries citing papers authored by Dirk Graafen

Since Specialization
Citations

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

Fields of papers citing papers by Dirk Graafen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Dirk Graafen

This figure shows the co-authorship network connecting the top 25 collaborators of Dirk Graafen. A scholar is included among the top collaborators of Dirk Graafen 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 Dirk Graafen. Dirk Graafen 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.
Halfmann, Moritz C., Tilman Emrich, Michaela M. Hell, et al.. (2024). Ultrahigh-Spatial-Resolution Photon-counting Detector CT Angiography of Coronary Artery Disease for Stenosis Assessment. Radiology. 310(2). e231956–e231956. 44 indexed citations
2.
Graafen, Dirk, Moritz C. Halfmann, Lukáš Müller, et al.. (2024). In vitro and in vivo optimized reconstruction for low-keV virtual monoenergetic photon-counting detector CT angiography of lower legs. European Radiology Experimental. 8(1). 89–89. 5 indexed citations
3.
Vecsey-Nagy, Milán, Ákos Varga‐Szemes, U. Joseph Schoepf, et al.. (2024). Ultra-high resolution coronary CT angiography on photon-counting detector CT: bi-centre study on the impact of quantum iterative reconstruction on image quality and accuracy of stenosis measurements. European Journal of Radiology. 176. 111517–111517. 7 indexed citations
4.
Richter, R, Moritz C. Halfmann, Dirk Graafen, et al.. (2024). Prospective ECG-gated High-Pitch Photon-Counting CT Angiography: Evaluation of measurement accuracy for aortic annulus sizing in TAVR planning. European Journal of Radiology. 178. 111604–111604. 4 indexed citations
5.
Müller, Lukáš, et al.. (2024). Value of vendor-agnostic deep learning image denoising in brain computed tomography: A multi-scanner study. RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren. 197(1). 65–75. 2 indexed citations
6.
Müller, Lukáš, Simon Johannes Gairing, Friedrich Foerster, et al.. (2023). Portal hypertension in patients with hepatocellular carcinoma and immunotherapy: prognostic relevance of CT-morphologic estimates. Cancer Imaging. 23(1). 40–40. 2 indexed citations
7.
Graafen, Dirk, Moritz C. Halfmann, Tilman Emrich, et al.. (2023). Optimization of the Reconstruction Settings for Low-Dose Ultra-High-Resolution Photon-Counting Detector CT of the Lungs. Diagnostics. 13(23). 3522–3522. 8 indexed citations
8.
Graafen, Dirk, Lukáš Müller, Moritz C. Halfmann, et al.. (2023). Soft Reconstruction Kernels Improve HCC Imaging on a Photon-Counting Detector CT. Academic Radiology. 30. S143–S154. 8 indexed citations
9.
Knorr, Maike, Katharina Schnitzler, Dirk Graafen, et al.. (2023). Late-Onset Prosthetic Endocarditis with Paraaortic Abscess Caused by Cutibacterium acnes. Infectious Disease Reports. 15(5). 635–641.
10.
Graafen, Dirk, Fabian Stoehr, Moritz C. Halfmann, et al.. (2023). Quantum iterative reconstruction on a photon-counting detector CT improves the quality of hepatocellular carcinoma imaging. Cancer Imaging. 23(1). 69–69. 16 indexed citations
11.
Sagoschen, Ingo, Ioannis T. Farmakis, Karsten Keller, et al.. (2023). A multidisciplinary pulmonary embolism response team (PERT): first experience from a single center in Germany. Clinical Research in Cardiology. 113(4). 581–590. 12 indexed citations
12.
Yang, Yang, Nicola Fink, Tilman Emrich, et al.. (2023). Optimization of Kernel Type and Sharpness Level Improves Objective and Subjective Image Quality for High-Pitch Photon Counting Coronary CT Angiography. Diagnostics. 13(11). 1937–1937. 15 indexed citations
13.
Graafen, Dirk, Lukáš Müller, Moritz C. Halfmann, et al.. (2022). Photon-counting detector CT improves quality of arterial phase abdominal scans: A head-to-head comparison with energy-integrating CT. European Journal of Radiology. 156. 110514–110514. 31 indexed citations
14.
Jungmann, Florian, Lukáš Müller, Felix Hähn, et al.. (2021). Commercial AI solutions in detecting COVID-19 pneumonia in chest CT: not yet ready for clinical implementation?. European Radiology. 32(5). 3152–3160. 7 indexed citations
15.
Kloeckner, Roman, Daniel Pinto dos Santos, Sebastian Schotten, et al.. (2018). Portal vein tumor thrombosis has a direct impact on liver function. Journal of Hepatology. 68. S209–S210. 1 indexed citations
16.
Graafen, Dirk, María Belén Franzoni, Wolfgang Schreiber, H. W. Spieß, & Kerstin Münnemann. (2015). Magnetic resonance imaging of 1H long lived states derived from parahydrogen induced polarization in a clinical system. Journal of Magnetic Resonance. 262. 68–72. 18 indexed citations
17.
Sommer, Karsten, et al.. (2013). Contrast Agent Bolus Dispersion in a Realistic Coronary Artery Geometry: Influence of Outlet Boundary Conditions. Annals of Biomedical Engineering. 42(4). 787–796. 12 indexed citations
18.
Franzoni, María Belén, Dirk Graafen, L. Buljubasich, et al.. (2013). Hyperpolarized 1H long lived states originating from parahydrogen accessed by rf irradiation. Physical Chemistry Chemical Physics. 15(40). 17233–17233. 36 indexed citations
19.
Graafen, Dirk, et al.. (2011). Quantitative myocardial perfusion magnetic resonance imaging: the impact of pulsatile flow on contrast agent bolus dispersion. Physics in Medicine and Biology. 56(16). 5167–5185. 6 indexed citations
20.
Graafen, Dirk, Kerstin Münnemann, Stefan Weber, Karl‐Friedrich Kreitner, & Wolfgang Schreiber. (2009). Quantitative contrast‐enhanced myocardial perfusion magnetic resonance imaging: Simulation of bolus dispersion in constricted vessels. Medical Physics. 36(7). 3099–3106. 10 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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