Bernard Sigel

4.3k total citations
149 papers, 3.3k citations indexed

About

Bernard Sigel is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Oncology. According to data from OpenAlex, Bernard Sigel has authored 149 papers receiving a total of 3.3k indexed citations (citations by other indexed papers that have themselves been cited), including 78 papers in Surgery, 52 papers in Pulmonary and Respiratory Medicine and 23 papers in Oncology. Recurrent topics in Bernard Sigel's work include Pancreatic and Hepatic Oncology Research (19 papers), Gallbladder and Bile Duct Disorders (15 papers) and Venous Thromboembolism Diagnosis and Management (14 papers). Bernard Sigel is often cited by papers focused on Pancreatic and Hepatic Oncology Research (19 papers), Gallbladder and Bile Duct Disorders (15 papers) and Venous Thromboembolism Diagnosis and Management (14 papers). Bernard Sigel collaborates with scholars based in United States, Japan and Netherlands. Bernard Sigel's co-authors include Junji Machi, Jeffery Justin, J Machi, Howard A. Zaren, Júlio Cezar Uili Coelho, J C Beitler, D. Preston Flanigan, Dimitrios G. Spigos, James J. Schuler and Toshihiko Kurohiji and has published in prestigious journals such as Nature, Science and JAMA.

In The Last Decade

Bernard Sigel

145 papers receiving 3.0k citations

Peers

Bernard Sigel

SURGE

PRM

RNMI

ONCOL

CCM

Kenyon K. Kopecky United States

Vassilios Raptopoulos United States

Leon Morgenstern United States

D M DeLong United States

Geert Maleux Belgium

Junji Machi United States

Edward G. Grant United States

M. Galanski Germany

Vito D’Andrea Italy

Salah D. Qanadli Switzerland

Kenyon K. Kopecky United States

Bernard Sigel

2.5k ×1.6

SURGE

1.6k ×1.5

PRM

769 ×1.3

RNMI

1.4k ×2.5

ONCOL

176 ×0.3

CCM

Citations per year, relative to Bernard Sigel Bernard Sigel (= 1×) peers Kenyon K. Kopecky

Countries citing papers authored by Bernard Sigel

Since Specialization

Citations

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

Fields of papers citing papers by Bernard Sigel

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Bernard Sigel

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

Machi, Junji, et al.. (1999). Laparoscopic ultrasonography versus operative cholangiography during laparoscopic cholecystectomy: review of the literature and a comparison with open intraoperative ultrasonography11No competing interests declared.. Journal of the American College of Surgeons. 188(4). 360–367. 64 indexed citations

Sigel, Bernard, et al.. (1997). Ultrasound for surgeons. 17 indexed citations

Noritomi, Tomoaki, Bernard Sigel, Vanlila K. Swami, et al.. (1997). Carotid plaque typing by multiple-parameter ultrasonic tissue characterization. Ultrasound in Medicine & Biology. 23(5). 643–650. 46 indexed citations

Machi, Junji & Bernard Sigel. (1996). Operative ultrasound in general surgery. The American Journal of Surgery. 172(1). 15–20. 35 indexed citations

Machi, J, et al.. (1996). Technique of laparoscopic ultrasound examination of the liver and pancreas. Surgical Endoscopy. 10(6). 684–689. 16 indexed citations

Kitamura, Hiroshi, Bernard Sigel, Junji Machi, et al.. (1995). Roles of hematocrit and fibrinogen in red cell aggregation determined by ultrasonic scattering properties. Ultrasound in Medicine & Biology. 21(6). 827–832. 30 indexed citations

Machi, J, Bernard Sigel, Alistair B. Roberts, & Mark B. Kahn. (1994). Oversaturation of color may obscure small intraluminal partial occlusions in color Doppler imaging.. Journal of Ultrasound in Medicine. 13(10). 735–741. 11 indexed citations

Golub, Robert, Bernard Sigel, J Machi, et al.. (1994). Accuracy of viscera slide detection of abdominal wall adhesions by ultrasound. Surgical Endoscopy. 8(8). 871–874. 64 indexed citations

Sigel, Bernard, et al.. (1994). Intimal hyperplasia producing thrombus organization in an experimental venous thrombosis model. Journal of Vascular Surgery. 19(2). 350–360. 30 indexed citations

10.

Machi, J, et al.. (1993). Technique of ultrasound examination during laparoscopic cholecystectomy. Surgical Endoscopy. 7(6). 544–549. 44 indexed citations

11.

Parsons, Richard E., Bernard Sigel, Ernest J. Feleppa, et al.. (1993). Effect of perfusion and blood content on ultrasonic backscattering of liver tissue. Ultrasound in Medicine & Biology. 19(1). 39–43. 4 indexed citations

12.

Machi, Junji, Hiroharu Isomoto, Toshihiko Kurohiji, et al.. (1991). Accuracy of intraoperative ultrasonography in diagnosing liver metastasis from colorectal cancer: Evaluation with postoperative follow-up results. World Journal of Surgery. 15(4). 551–556. 93 indexed citations

13.

Sigel, Bernard, Robert Golub, Laurie A. Loiacono, et al.. (1991). Technique of ultrasonic detection and mapping of abdominal wall adhesions. Surgical Endoscopy. 5(4). 161–165. 88 indexed citations

14.

Sigel, Bernard, Ernest J. Feleppa, Vanlila K. Swami, et al.. (1990). Ultrasonic Tissue Characterization of Blood Clots. Surgical Clinics of North America. 70(1). 13–29. 18 indexed citations

15.

Sawchuk, Alan P., D. Preston Flanigan, Junji Machi, James J. Schuler, & Bernard Sigel. (1989). The fate of unrepaired minor technical defects detected by intraoperative ultrasonography during carotid endarterectomy. Journal of Vascular Surgery. 9(5). 671–676. 34 indexed citations

16.

Sigel, Bernard, et al.. (1982). Inferior vena cava obstruction complicating amebic liver abscess. Digestive Diseases and Sciences. 27(6). 565–569. 5 indexed citations

17.

Sigel, Bernard, Júlio Cezar Uili Coelho, Dimitrios G. Spigos, et al.. (1981). Ultrasonic imaging during biliary and pancreatic surgery. The American Journal of Surgery. 141(1). 84–89. 25 indexed citations

18.

Sigel, Bernard. (1970). Evaluation of Doppler Ultrasound Examination. Archives of Surgery. 100(5). 535–535. 25 indexed citations

19.

Sigel, Bernard, et al.. (1965). The mechanism of blood vessel closure by high frequency electrocoagulation.. PubMed. 121(4). 823–31. 81 indexed citations

20.

Sigel, Bernard, et al.. (1963). Electrocoaptive union of blood vessels. Journal of Surgical Research. 3(2). 90–96. 22 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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