Leonard Sommer

564 total citations
17 papers, 384 citations indexed

About

Leonard Sommer is a scholar working on Cardiology and Cardiovascular Medicine, Surgery and Radiology, Nuclear Medicine and Imaging. According to data from OpenAlex, Leonard Sommer has authored 17 papers receiving a total of 384 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Cardiology and Cardiovascular Medicine, 6 papers in Surgery and 4 papers in Radiology, Nuclear Medicine and Imaging. Recurrent topics in Leonard Sommer's work include Cardiac pacing and defibrillation studies (4 papers), Cardiac Imaging and Diagnostics (4 papers) and Cardiac Valve Diseases and Treatments (3 papers). Leonard Sommer is often cited by papers focused on Cardiac pacing and defibrillation studies (4 papers), Cardiac Imaging and Diagnostics (4 papers) and Cardiac Valve Diseases and Treatments (3 papers). Leonard Sommer collaborates with scholars based in United States and France. Leonard Sommer's co-authors include Stephen Mallon, Robert A. Chahine, On Topaz, Emerson C. Perin, Eduardo DeMarchena, Ali Ghahramani, Milton H. Paul, Alexander S. Nadas, Abraham M. Rudolph and Hooshang Bolooki and has published in prestigious journals such as Circulation, CHEST Journal and The American Journal of Medicine.

In The Last Decade

Leonard Sommer

17 papers receiving 336 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Leonard Sommer United States	10	268	231	198	75	47	17	384
O Creech	8	239 0.9×	133 0.6×	131 0.7×	54 0.7×	12 0.3×	20	337
R Jandová Czechia	7	130 0.5×	180 0.8×	189 1.0×	30 0.4×	36 0.8×	28	318
T P Gavaghan Australia	9	98 0.4×	150 0.6×	432 2.2×	50 0.7×	64 1.4×	11	478
Robert Hall United States	10	162 0.6×	212 0.9×	159 0.8×	65 0.9×	44 0.9×	20	350
G. A. Bousvaros United States	11	69 0.3×	117 0.5×	230 1.2×	27 0.4×	57 1.2×	25	312
Harry Feld United States	9	174 0.6×	251 1.1×	311 1.6×	45 0.6×	92 2.0×	17	414
Maurice Adam United States	11	62 0.2×	241 1.0×	270 1.4×	35 0.5×	75 1.6×	21	396
K B Kern United States	8	99 0.4×	282 1.2×	283 1.4×	18 0.2×	33 0.7×	12	387
D. Schaps Germany	6	588 2.2×	318 1.4×	319 1.6×	71 0.9×	6 0.1×	19	675
J Patrick Kleaveland United States	8	59 0.2×	241 1.0×	490 2.5×	65 0.9×	131 2.8×	15	552

Countries citing papers authored by Leonard Sommer

Since Specialization

Citations

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

Fields of papers citing papers by Leonard Sommer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Leonard Sommer

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

All Works

Sort: Min cites: Since: Top N: Style:

17 of 17 papers shown

Topaz, On, Eduardo DeMarchena, Emerson C. Perin, et al.. (1992). Anomalous coronary arteries: angiographic findings in 80 patients. International Journal of Cardiology. 34(2). 129–138. 169 indexed citations

Sommer, Leonard, et al.. (1981). Coronary spasm and coronary artery disease—II. The American Journal of Cardiology. 47(5). 1178–1179. 3 indexed citations

Sheps, David S., Bruce F. Cameron, Stephen Mallon, et al.. (1980). Depression of intramyocardial oxyhemoglobin dissociation by angiographic contrast media. American Heart Journal. 99(2). 193–197. 3 indexed citations

Lévy, Samuel, et al.. (1976). Transient left anterior hemiblock (LAH) associated with Angina Pectoris Attacks (APA): Coronarographic aspects and pronostic significance. The American Journal of Cardiology. 37(1). 151–151. 2 indexed citations

Bolooki, Hooshang, Leonard Sommer, Gerard A. Kaiser, Abelardo Vargas, & Ali Ghahramani. (1974). Long-term follow-up in patients receiving emergency revascularization for intermediate coronary syndrome. Journal of Thoracic and Cardiovascular Surgery. 68(1). 90–100. 11 indexed citations

Bolooki, Hooshang, et al.. (1973). The significance of serum enzyme studies in patients undergoing direct coronary artery surgery. Journal of Thoracic and Cardiovascular Surgery. 65(6). 863–868. 16 indexed citations

Bolooki, Hooshang, Stephen Mallon, Ali Ghahramani, et al.. (1973). Objective assessment of the effects of aorto-coronary bypass operation on cardiac function. Journal of Thoracic and Cardiovascular Surgery. 66(6). 916–933. 14 indexed citations

Bolooki, Hooshang, et al.. (1973). Complications of Coronary Bypass Surgery. Circulation. 48(1s3). III120–6. 9 indexed citations

Bolooki, Hooshang, et al.. (1972). Aortocoronary Bypass Graft for Preinfarction Angina. CHEST Journal. 61(3). 247–252. 22 indexed citations

10.

Ghahramani, Ali, et al.. (1972). Myocardial infarction due to congenital coronary arterial aneurysm (with successful saphenous vein bypass graft). The American Journal of Cardiology. 29(6). 863–867. 37 indexed citations

11.

Ghahramani, Ali, et al.. (1972). Left atrial myxoma. The American Journal of Medicine. 52(4). 525–532. 15 indexed citations

12.

Bolooki, Hooshang, et al.. (1972). The value of continuous monitoring of cardiac muscle performance. The American Journal of Cardiology. 29(2). 254–255. 3 indexed citations

13.

Ghahramani, Ali, et al.. (1971). Calcification of Annulus of Tricuspid Valve (Observation in Two Patients with Congenital Pulmonary Stenosis). CHEST Journal. 60(3). 229–232. 5 indexed citations

14.

Sommer, Leonard, et al.. (1967). Dislodgment of a bullet from the sinus of Valsalva by cardiac catheterization. American Heart Journal. 74(1). 92–95. 2 indexed citations

15.

Castellanos, A, Louis Lemberg, Leonard Sommer, & Barouh V. Berkovits. (1965). Changes in Ventricular Automaticity: Drug Induced and Exposed by Intracardiac Electric Stimulation. Southern Medical Journal. 58(12). 1517–1519. 5 indexed citations

16.

Sommer, Leonard, et al.. (1961). Atrial septal defect in older age groups. The American Journal of Cardiology. 8(2). 198–202. 17 indexed citations

17.

Rudolph, Abraham M., Milton H. Paul, Leonard Sommer, & Alexander S. Nadas. (1958). Effects of tolazoline hydrochloride (priscoline) on circulatory dynamics of patients with pulmonary hypertension. American Heart Journal. 55(3). 424–432. 51 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