Kai S. Lehmann

2.1k total citations
106 papers, 1.5k citations indexed

About

Kai S. Lehmann is a scholar working on Surgery, Hepatology and Biomedical Engineering. According to data from OpenAlex, Kai S. Lehmann has authored 106 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 52 papers in Surgery, 31 papers in Hepatology and 25 papers in Biomedical Engineering. Recurrent topics in Kai S. Lehmann's work include Hepatocellular Carcinoma Treatment and Prognosis (31 papers), Ultrasound and Hyperthermia Applications (15 papers) and Appendicitis Diagnosis and Management (15 papers). Kai S. Lehmann is often cited by papers focused on Hepatocellular Carcinoma Treatment and Prognosis (31 papers), Ultrasound and Hyperthermia Applications (15 papers) and Appendicitis Diagnosis and Management (15 papers). Kai S. Lehmann collaborates with scholars based in Germany, United States and Switzerland. Kai S. Lehmann's co-authors include H. J. Buhr, Christoph Holmer, Jörg‐Peter Ritz, Bernd Frericks, Urte Zurbuchen, Andrea Stroux, Georg Bretthauer, Jörg P. Ritz, Ole Gemeinhardt and A. Roggan and has published in prestigious journals such as PLoS ONE, Annals of Surgery and Scientific Reports.

In The Last Decade

Kai S. Lehmann

101 papers receiving 1.5k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Kai S. Lehmann Germany 22 841 445 305 291 287 106 1.5k
Christoph Holmer Germany 18 632 0.8× 212 0.5× 290 1.0× 78 0.3× 148 0.5× 52 951
Ivan Bricault France 19 505 0.6× 261 0.6× 89 0.3× 248 0.9× 290 1.0× 64 1.2k
Paolo Fonio Italy 28 854 1.0× 207 0.5× 182 0.6× 342 1.2× 841 2.9× 134 2.2k
Clifford R. Weiss United States 25 921 1.1× 479 1.1× 57 0.2× 128 0.4× 606 2.1× 196 2.2k
Helmut Ringl Austria 20 440 0.5× 413 0.9× 69 0.2× 124 0.4× 338 1.2× 54 1.4k
Alfred Stadler Austria 23 629 0.7× 185 0.4× 68 0.2× 134 0.5× 774 2.7× 60 1.8k
Akira Furukawa Japan 24 952 1.1× 112 0.3× 291 1.0× 62 0.2× 555 1.9× 117 1.8k
Joseph R. Grajo United States 20 476 0.6× 329 0.7× 50 0.2× 328 1.1× 253 0.9× 83 1.7k
Ahuva Engel Israel 23 779 0.9× 376 0.8× 241 0.8× 43 0.1× 565 2.0× 66 1.8k
D M DeLong United States 27 482 0.6× 182 0.4× 81 0.3× 200 0.7× 917 3.2× 56 2.2k

Countries citing papers authored by Kai S. Lehmann

Since Specialization
Citations

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

Fields of papers citing papers by Kai S. Lehmann

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Kai S. Lehmann. 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 Kai S. Lehmann. The network helps show where Kai S. Lehmann may publish in the future.

Co-authorship network of co-authors of Kai S. Lehmann

This figure shows the co-authorship network connecting the top 25 collaborators of Kai S. Lehmann. A scholar is included among the top collaborators of Kai S. Lehmann 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 Kai S. Lehmann. Kai S. Lehmann 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.
Schulze, Daniel, Kai S. Lehmann, Johannes C. Lauscher, et al.. (2024). Impact of Coronavirus Disease 2019 (COVID-19) Pandemic on Surgical Site Infection in Patients with Inflammatory Bowel Disease—A Monocentric, Retrospective Cohort Study. Journal of Clinical Medicine. 13(3). 650–650. 2 indexed citations
2.
Bayerl, Christian, Rolf Reiter, Vanessa Proß, et al.. (2024). Investigation of hepatic inflammation via viscoelasticity at low and high mechanical frequencies - A magnetic resonance elastography study. Journal of the mechanical behavior of biomedical materials. 160. 106711–106711. 2 indexed citations
3.
Gemeinhardt, Ole, et al.. (2021). Perivascular vital cells in the ablation center after multibipolar radiofrequency ablation in an in vivo porcine model. Scientific Reports. 11(1). 13886–13886. 1 indexed citations
4.
5.
Bressem, Keno K., et al.. (2020). Exploring Patterns of Dynamic Size Changes of Lesions after Hepatic Microwave Ablation in an In Vivo Porcine Model. Scientific Reports. 10(1). 805–805. 5 indexed citations
6.
Sohn, Maximilian, et al.. (2017). Surgical management of acute appendicitis in adults: A review of current techniques. International Journal of Surgery. 48. 232–239. 18 indexed citations
7.
Bulian, Dirk R., Georg Kaehler, Richard Magdeburg, et al.. (2016). Analysis of the First 217 Appendectomies of the German NOTES Registry. Annals of Surgery. 265(3). 534–538. 21 indexed citations
8.
Lehmann, Kai S., C. Zornig, G. Arlt, et al.. (2014). „Natural orifice transluminal endoscopic surgery“ in Deutschland. Der Chirurg. 86(6). 577–586. 15 indexed citations
9.
Bulian, Dirk R., N. Runkel, Jens Burghardt, et al.. (2014). Natural Orifice Transluminal Endoscopic Surgery (NOTES) for colon resections—analysis of the first 139 patients of the German NOTES Registry (GNR). International Journal of Colorectal Disease. 29(7). 853–861. 21 indexed citations
10.
Sohn, Maximilian, Martin Hoffmann, U. Pohlen, et al.. (2013). Stumpfverschluss bei der laparoskopischen Appendektomie. Der Chirurg. 85(1). 46–50. 7 indexed citations
11.
Lehmann, Kai S., Christoph Holmer, Sonja Gillen, et al.. (2012). Suitability of a virtual reality simulator for laparoscopic skills assessment in a surgical training course. International Journal of Colorectal Disease. 28(4). 563–571. 7 indexed citations
12.
Lehmann, Kai S., et al.. (2011). Akute Sigmadivertikulitis. Der Chirurg. 82(8). 701–706. 4 indexed citations
13.
Holmer, Christoph, et al.. (2011). Long-term outcome after conservative and surgical treatment of acute sigmoid diverticulitis. Langenbeck s Archives of Surgery. 396(6). 825–832. 29 indexed citations
14.
Lehmann, Kai S., Jörg P. Ritz, Andreas G. Wibmer, et al.. (2010). The German Registry for Natural Orifice Translumenal Endoscopic Surgery. Annals of Surgery. 252(2). 263–270. 146 indexed citations
15.
Ritz, Jörg‐Peter, Kai S. Lehmann, Christoph Loddenkemper, et al.. (2010). Preoperative CT staging in sigmoid diverticulitis—does it correlate with intraoperative and histological findings?. Langenbeck s Archives of Surgery. 395(8). 1009–1015. 40 indexed citations
16.
Ritz, Jerome, Jörn Gröne, Hans‐Detlev Saeger, et al.. (2009). Zehn Jahre „Praktischer Kurs für Viszeralchirurgie Warnemünde“. Der Chirurg. 80(9). 864–871. 6 indexed citations
17.
Frericks, Bernd, Jörg P. Ritz, Thomas Albrecht, et al.. (2008). Influence of Intrahepatic Vessels on Volume and Shape of Percutaneous Thermal Ablation Zones. Investigative Radiology. 43(4). 211–218. 49 indexed citations
18.
Holmer, Christoph, Kai S. Lehmann, Christoph Reißfelder, et al.. (2007). Optical properties of adenocarcinoma and squamous cell carcinoma of the gastroesophageal junction. Journal of Biomedical Optics. 12(1). 14025–14025. 36 indexed citations
19.
Lehmann, Kai S., Urte Zurbuchen, Frank Wacker, et al.. (2007). Improving laser-induced thermotherapy of liver metastases – Effects of arterial microembolization and complete blood flow occlusion. European Journal of Surgical Oncology. 33(5). 608–615. 24 indexed citations
20.

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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