K. Levorstad

557 total citations
31 papers, 469 citations indexed

About

K. Levorstad is a scholar working on Cardiology and Cardiovascular Medicine, Surgery and Radiology, Nuclear Medicine and Imaging. According to data from OpenAlex, K. Levorstad has authored 31 papers receiving a total of 469 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Cardiology and Cardiovascular Medicine, 11 papers in Surgery and 11 papers in Radiology, Nuclear Medicine and Imaging. Recurrent topics in K. Levorstad's work include Cardiac Imaging and Diagnostics (8 papers), Cardiac Valve Diseases and Treatments (7 papers) and Coronary Interventions and Diagnostics (6 papers). K. Levorstad is often cited by papers focused on Cardiac Imaging and Diagnostics (8 papers), Cardiac Valve Diseases and Treatments (7 papers) and Coronary Interventions and Diagnostics (6 papers). K. Levorstad collaborates with scholars based in Norway, India and United Kingdom. K. Levorstad's co-authors include Svein Simonsen, S Nitter‐Hauge, Nils‐Einar Kløw, Karleif Vatne, K. Endresen, T Aakhus, K. J. Berg, Michel Abdelnoor, Kari Anne Sveen and Doris Tove Kristoffersen and has published in prestigious journals such as Radiology, European Heart Journal and Heart.

In The Last Decade

K. Levorstad

30 papers receiving 418 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
K. Levorstad Norway 14 178 130 128 120 79 31 469
M.S.T. Ruttley United Kingdom 12 164 0.9× 54 0.4× 188 1.5× 105 0.9× 213 2.7× 35 466
Hooman Madyoon United States 10 173 1.0× 357 2.7× 192 1.5× 178 1.5× 141 1.8× 21 647
Curtis W. Bakal United States 8 72 0.4× 236 1.8× 344 2.7× 58 0.5× 558 7.1× 9 779
Thomas W. Ziegler United States 10 178 1.0× 164 1.3× 205 1.6× 98 0.8× 260 3.3× 17 557
Alok Agrawal United States 7 35 0.2× 329 2.5× 74 0.6× 32 0.3× 88 1.1× 10 426
Christian Perings Germany 14 403 2.3× 44 0.3× 198 1.5× 118 1.0× 137 1.7× 40 617
Christian Mueller Germany 6 78 0.4× 555 4.3× 92 0.7× 79 0.7× 206 2.6× 11 665
Shigetaka Noma Japan 15 546 3.1× 101 0.8× 323 2.5× 215 1.8× 161 2.0× 64 741
Giovanni Teruzzi Italy 13 269 1.5× 141 1.1× 190 1.5× 115 1.0× 254 3.2× 46 602
Douglas C. Westveer United States 15 678 3.8× 232 1.8× 212 1.7× 125 1.0× 152 1.9× 28 982

Countries citing papers authored by K. Levorstad

Since Specialization
Citations

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

Fields of papers citing papers by K. Levorstad

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of K. Levorstad

This figure shows the co-authorship network connecting the top 25 collaborators of K. Levorstad. A scholar is included among the top collaborators of K. Levorstad 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 K. Levorstad. K. Levorstad 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.
Fiane, Arnt E., et al.. (1997). Percutaneous Transluminal Angioplasty and Retransplantation due to Transplant Coronary Artery Disease. Scandinavian Cardiovascular Journal. 31(4). 223–227. 2 indexed citations
2.
Abdelnoor, Michel, et al.. (1996). Mortality and morbidity after coronary artery bypass surgery related to pre-operative left ventricular ejection fraction: a follow-up study. European Heart Journal. 17(6). 874–879. 20 indexed citations
3.
Abdelnoor, Michel, et al.. (1996). Risk factors of recurrent angina pectoris and of non-fatal myocardial infarction after coronary artery bypass surgery. European Journal of Cardio-Thoracic Surgery. 10(3). 173–178. 13 indexed citations
4.
Abdelnoor, Michel, Jan Svennevig, K. Levorstad, et al.. (1996). Diabetes Mellitus and Morbidity and Mortality Risks after Coronary Artery Bypass Surgery. Scandinavian Journal of Thoracic and Cardiovascular Surgery. 30(2). 71–75. 41 indexed citations
5.
Kløw, Nils‐Einar, Karleif Vatne, F Lærum, et al.. (1995). Coronary Angioplasty Using a Low Osmolar Nonionic Contrast Medium. Acta Radiologica. 36(1). 54–57. 4 indexed citations
6.
Kløw, Nils‐Einar, Karleif Vatne, F Lærum, et al.. (1995). Coronary Angioplasty using a Low Osmolar Nonionic Contrast Medium. Acta Radiologica. 36(1). 54–57. 2 indexed citations
7.
Levorstad, K., et al.. (1995). Cerebral Thromboembolic Complications Associated with the Use of a Nonionic Contrast Medium in Coronary Angiography. Acta Radiologica. 36(1). 69–71. 19 indexed citations
8.
Kløw, Nils‐Einar, K. Levorstad, K. J. Berg, et al.. (1993). Iodixanol in Cardioangiography in Patients with Coronary Artery Disease. Acta Radiologica. 34(1). 72–77. 56 indexed citations
9.
Høstmark, Arne T., Arve Osland, Svein Simonsen, & K. Levorstad. (1990). Lipoprotein‐related coronary risk factors in patients with angiographically defined coronary artery disease: relation to number of stenosed arteries. Journal of Internal Medicine. 228(4). 317–321. 20 indexed citations
10.
Jakobsen, Jarl Å., A Kolbenstvedt, K. Levorstad, K. J. Berg, & Ivar Enge. (1990). Renal Effects of Nonionic Contrast Media After Intravenous, Cardiac, and Lumbar Aortic Injections. Investigative Radiology. 25. S135–S136. 4 indexed citations
11.
Levorstad, K., et al.. (1989). Safety of the nonionic contrast medium omnipaque in coronary angiography. CardioVascular and Interventional Radiology. 12(2). 98–100. 44 indexed citations
12.
Ihlen, Halfdan, et al.. (1987). Quantification of mitral regurgitation by Doppler echocardiography. European Heart Journal. 8(suppl C). 59–62. 20 indexed citations
13.
Abdelnoor, Michel, et al.. (1986). Prognostic factors for survival in surgically treated aortic regurgitation. Scandinavian Journal of Thoracic and Cardiovascular Surgery. 20(3). 221–225. 1 indexed citations
14.
Levorstad, K., et al.. (1983). Tolerability and usefulness of iohexol in cardioangiography. II. A double blind comparison with metrizoate.. PubMed. 366. 101–10. 7 indexed citations
15.
Otterstad, J. E., et al.. (1981). Long-term results after left ventricular aneurysmectomy.. Heart. 45(4). 427–433. 9 indexed citations
16.
Nitter‐Hauge, S & K. Levorstad. (1980). Does Aortocoronary Saphenous Vein Bypass Surgery Change the Native Coronary Arteries?. Acta Medica Scandinavica. 207(1-6). 189–193. 3 indexed citations
17.
Forfang, Kolbjørn, Hans Rostad, Svein Sörland, & K. Levorstad. (1979). Late Sudden Death after Surgical Correction of Coarctation of the Aorta. Acta Medica Scandinavica. 206(1-6). 375–379. 14 indexed citations
18.
Levang, Olaf W., S Nitter‐Hauge, K. Levorstad, & Tor Fröysaker. (1979). Aortic Valve Replacement. A Randomized Study Comparing the Björk–Shiley and Lillehei–Kaster Disc Valves.Late Haemodynamics Related to Clinical Results. Scandinavian Journal of Thoracic and Cardiovascular Surgery. 13(3). 199–213. 17 indexed citations
19.
Nitter‐Hauge, S, et al.. (1979). Primary Results with the New Hall-Kaster Disc Valve Prosthesis in Mitral Position. The Thoracic and Cardiovascular Surgeon. 27(2). 85–91.
20.
Vaage, Sigmund, K. Levorstad, & L Efskind. (1975). Congenital Atresia of the Oesophagus:A Follow-up Study in 36 Surgically Corrected Cases. Scandinavian Journal of Thoracic and Cardiovascular Surgery. 9(1). 68–74. 3 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by M.S.T. Ruttley Breakdown of academic impact, for papers by Hooman Madyoon Breakdown of academic impact, for papers by Curtis W. Bakal Breakdown of academic impact, for papers by Thomas W. Ziegler Breakdown of academic impact, for papers by Alok Agrawal Breakdown of academic impact, for papers by Christian Perings Breakdown of academic impact, for papers by Christian Mueller Breakdown of academic impact, for papers by Shigetaka Noma Breakdown of academic impact, for papers by Giovanni Teruzzi Breakdown of academic impact, for papers by Douglas C. Westveer
Rankless by CCL
2026