Allan Johansen

1.1k total citations
51 papers, 802 citations indexed

About

Allan Johansen is a scholar working on Radiology, Nuclear Medicine and Imaging, Surgery and Cardiology and Cardiovascular Medicine. According to data from OpenAlex, Allan Johansen has authored 51 papers receiving a total of 802 indexed citations (citations by other indexed papers that have themselves been cited), including 32 papers in Radiology, Nuclear Medicine and Imaging, 20 papers in Surgery and 17 papers in Cardiology and Cardiovascular Medicine. Recurrent topics in Allan Johansen's work include Cardiac Imaging and Diagnostics (27 papers), Advanced MRI Techniques and Applications (16 papers) and Coronary Interventions and Diagnostics (10 papers). Allan Johansen is often cited by papers focused on Cardiac Imaging and Diagnostics (27 papers), Advanced MRI Techniques and Applications (16 papers) and Coronary Interventions and Diagnostics (10 papers). Allan Johansen collaborates with scholars based in Denmark, Germany and United States. Allan Johansen's co-authors include Poul Flemming Høilund‐Carlsen, Oke Gerke, Torben Haghfelt, Werner Vach, Henrik Petersen, Anders Thomassen, Henrik Wulff Christensen, Mikael Kjær Poulsen, Annegrete Veje and Jan Erik Henriksen and has published in prestigious journals such as European Heart Journal, The American Journal of Cardiology and Diabetologia.

In The Last Decade

Allan Johansen

50 papers receiving 781 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Allan Johansen Denmark	17	454	260	233	113	111	51	802
Soe Hee Ann South Korea	15	389 0.9×	541 2.1×	434 1.9×	44 0.4×	125 1.1×	64	892
Guglielmo Gallone Italy	16	308 0.7×	403 1.6×	275 1.2×	91 0.8×	54 0.5×	85	785
Adrian S. H. Cheng United Kingdom	19	802 1.8×	901 3.5×	393 1.7×	106 0.9×	89 0.8×	27	1.3k
Kyung Hoon Cho South Korea	13	146 0.3×	385 1.5×	333 1.4×	66 0.6×	78 0.7×	81	667
Zehra Buğra Türkiye	19	209 0.5×	571 2.2×	229 1.0×	25 0.2×	113 1.0×	62	904
Alexander D. Montauban van Swijndregt Netherlands	17	239 0.5×	299 1.1×	268 1.2×	36 0.3×	423 3.8×	32	868
Mariusz Kruk Poland	15	439 1.0×	509 2.0×	391 1.7×	108 1.0×	116 1.0×	83	836
Tracey Steedman United Kingdom	18	538 1.2×	1.2k 4.5×	452 1.9×	72 0.6×	185 1.7×	34	1.7k
Allen B. Nichols United States	17	387 0.9×	505 1.9×	460 2.0×	110 1.0×	160 1.4×	34	1.1k
Gabriella Di Giovine Italy	15	223 0.5×	355 1.4×	153 0.7×	37 0.3×	54 0.5×	28	674

Countries citing papers authored by Allan Johansen

Since Specialization

Citations

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

Fields of papers citing papers by Allan Johansen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Allan Johansen

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

Hildebrandt, Malene Grubbe, Allan Johansen, Henrik Petersen, et al.. (2020). Hybrid PET/MRI in non-small cell lung cancer (NSCLC) and lung nodules—a literature review. European Journal of Nuclear Medicine and Molecular Imaging. 48(2). 584–591. 28 indexed citations

Thomassen, Anders, Poul‐Erik Braad, Kasper Pedersen, et al.. (2018). 15-O-water myocardial flow reserve PET and CT angiography by full hybrid PET/CT as a potential alternative to invasive angiography. International journal of cardiac imaging. 34(12). 2011–2022. 2 indexed citations

Sand, Niels Peter Rønnow, Karsten Tange Veien, Søren Nielsen, et al.. (2018). Prospective Comparison of FFR Derived From Coronary CT Angiography With SPECT Perfusion Imaging in Stable Coronary Artery Disease. JACC. Cardiovascular imaging. 11(11). 1640–1650. 68 indexed citations

Simonsen, Jane Angel, Hans Mickley, Allan Johansen, et al.. (2017). Outcome of revascularisation in stable coronary artery disease without ischaemia: a Danish registry-based follow-up study. BMJ Open. 7(8). e016169–e016169. 8 indexed citations

Hess, Søren, et al.. (2015). The clinical value of FDG-PET/CT in bacteraemia of unknown origin: A retrospective study. European Journal of Nuclear Medicine and Molecular Imaging. 42. 1 indexed citations

Simonsen, Jane Angel, Oke Gerke, Anders Thomassen, et al.. (2013). Prognosis in patients with suspected or known ischemic heart disease and normal myocardial perfusion: Long-term outcome and temporal risk variations. Journal of Nuclear Cardiology. 20(3). 347–357. 13 indexed citations

Eckardt, Rahel, B. J. Kjeldsen, Allan Johansen, et al.. (2012). Can preoperative myocardial perfusion scintigraphy predict changes in left ventricular perfusion and function after coronary artery bypass graft surgery?. Interactive Cardiovascular and Thoracic Surgery. 14(6). 779–784. 2 indexed citations

Sand, Niels Peter Rønnow, Mikael Kjær Poulsen, Bjarne Linde Nørgaard, et al.. (2012). Non-invasive assessments reveal that more than half of randomly selected middle-aged individuals have evidence of subclinical atherosclerosis: a DanRisk substudy. International journal of cardiac imaging. 29(2). 301–308. 16 indexed citations

Thomassen, Anders, Anne Lerberg Nielsen, Oke Gerke, Allan Johansen, & Henrik Petersen. (2011). Duration of 18F-FDG avidity in lymph nodes after pandemic H1N1v and seasonal influenza vaccination. European Journal of Nuclear Medicine and Molecular Imaging. 38(5). 894–898. 59 indexed citations

10.

Poulsen, Mikael Kjær, Mads Nybo, Jordi Sanchez Dahl, et al.. (2011). Plasma osteoprotegerin is related to carotid and peripheral arterial disease, but not to myocardial ischemia in type 2 diabetes mellitus. Cardiovascular Diabetology. 10(1). 76–76. 36 indexed citations

11.

Høilund‐Carlsen, Poul Flemming, et al.. (2007). High probability of disease in angina pectoris patients: Is clinical estimation reliable?. Canadian Journal of Cardiology. 23(8). 641–647. 15 indexed citations

12.

Johansen, Allan, et al.. (2006). To what degree is amelioration of angina following coronary revascularization associated with improvement in myocardial perfusion?. Clinical Physiology and Functional Imaging. 26(5). 263–270. 1 indexed citations

13.

Johansen, Allan, et al.. (2005). Use of myocardial perfusion imaging to predict the effectiveness of coronary revascularisation in patients with stable angina pectoris. European Journal of Nuclear Medicine and Molecular Imaging. 32(12). 1363–1370. 10 indexed citations

14.

Christensen, Henrik Wulff, Torben Haghfelt, Werner Vach, Allan Johansen, & Poul Flemming Høilund‐Carlsen. (2005). Observer reproducibility and validity of systems for clinical classification of angina pectoris: comparison with radionuclide imaging and coronary angiography. Clinical Physiology and Functional Imaging. 26(1). 26–31. 5 indexed citations

15.

Høilund‐Carlsen, Poul Flemming, Allan Johansen, Henrik Wulff Christensen, et al.. (2005). Potential impact of myocardial perfusion scintigraphy as gatekeeper for invasive examination and treatment in patients with stable angina pectoris: observational study without post-test referral bias. European Heart Journal. 27(1). 29–34. 38 indexed citations

16.

Johansen, Allan, Poul Flemming Høilund‐Carlsen, Henrik Wulff Christensen, et al.. (2004). Observer variability in the evaluation of dual-isotope Tl-201/Tc-99m sestamibi rest/stress myocardial perfusion SPECT in men and women with known or suspected stable angina pectoris. Journal of Nuclear Cardiology. 11(6). 710–718. 22 indexed citations

17.

Johansen, Allan, et al.. (2002). Improvement of Risk-stratification by Use of a New Combination of Holter Variables in Survivors of Myocardial Infarction. Scandinavian Cardiovascular Journal. 36(5). 282–286. 4 indexed citations

18.

Knudsen, Lene Meldgaard, et al.. (2002). Accuracy of Duplex Scan of Internal Carotid Arteries. European Journal of Vascular and Endovascular Surgery. 24(1). 86–87. 6 indexed citations

19.

Johansen, Allan, et al.. (1998). Effect of leflunomide and cyclosporine on graft survival and changes in lymphocyte phenotypres in a rat heart allotransplantation model. Transplant Immunology. 6(1). 48–52. 4 indexed citations

20.

Abdelnoor, Michael, Kathi Hall, S Nitter‐Hauge, et al.. (1988). Risk factors of morbidity and mortality in surgically treated chronic aortic valvular heart disease.. PubMed. 36(2). 89–98. 4 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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