A. Roggan

4.4k total citations · 1 hit paper
93 papers, 3.2k citations indexed

About

A. Roggan is a scholar working on Biomedical Engineering, Radiology, Nuclear Medicine and Imaging and Hepatology. According to data from OpenAlex, A. Roggan has authored 93 papers receiving a total of 3.2k indexed citations (citations by other indexed papers that have themselves been cited), including 59 papers in Biomedical Engineering, 56 papers in Radiology, Nuclear Medicine and Imaging and 24 papers in Hepatology. Recurrent topics in A. Roggan's work include Photoacoustic and Ultrasonic Imaging (39 papers), Ultrasound and Hyperthermia Applications (31 papers) and Infrared Thermography in Medicine (25 papers). A. Roggan is often cited by papers focused on Photoacoustic and Ultrasonic Imaging (39 papers), Ultrasound and Hyperthermia Applications (31 papers) and Infrared Thermography in Medicine (25 papers). A. Roggan collaborates with scholars based in Germany, United States and Switzerland. A. Roggan's co-authors include G. Müller, M.F. Friebel, Andreas Hahn, K. Dörschel, H. J. Buhr, Christoph Isbert, G. Müller, G. Müller, Martina C. Meinke and D. Albrecht and has published in prestigious journals such as The Journal of Chemical Physics, Gastroenterology and Annals of Surgery.

In The Last Decade

A. Roggan

93 papers receiving 3.1k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Optical Properties of Circulating Human Blood in the Wavelength Range 400–2500 nm

1999 619 citations A. Roggan, G. Müller et al. Journal of Biomedical Optics profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
A. Roggan Germany	29	1.8k	1.6k	606	526	429	93	3.2k
Benjamin L. Viglianti United States	24	1.6k 0.9×	1.1k 0.7×	282 0.5×	159 0.3×	314 0.7×	72	3.3k
Stephen A. Sapareto United States	25	2.8k 1.6×	1.8k 1.2×	212 0.3×	206 0.4×	571 1.3×	44	4.4k
Dieter Haemmerich United States	39	3.0k 1.6×	852 0.5×	558 0.9×	303 0.6×	417 1.0×	109	4.4k
Charles A. Cain United States	50	7.1k 3.9×	3.7k 2.3×	321 0.5×	452 0.9×	581 1.4×	251	8.6k
Johannes Crezee Netherlands	47	4.5k 2.5×	2.3k 1.5×	174 0.3×	229 0.4×	910 2.1×	213	6.8k
Gregory J. Czarnota Canada	41	3.2k 1.7×	3.1k 2.0×	152 0.3×	444 0.8×	480 1.1×	227	5.5k
Thomas J. Vogl Germany	30	876 0.5×	1.6k 1.0×	698 1.2×	77 0.1×	691 1.6×	179	3.8k
Zhen Xu United States	47	5.9k 3.2×	2.5k 1.6×	539 0.9×	391 0.7×	515 1.2×	214	7.3k
Val M. Runge United States	44	787 0.4×	4.2k 2.7×	306 0.5×	86 0.2×	812 1.9×	233	6.6k
Bert Hildebrandt Germany	26	3.0k 1.6×	1.1k 0.7×	366 0.6×	140 0.3×	698 1.6×	82	5.1k

Countries citing papers authored by A. Roggan

Since Specialization

Citations

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

Fields of papers citing papers by A. Roggan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of A. Roggan

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

Zurbuchen, Urte, Christoph Holmer, Kai S. Lehmann, et al.. (2010). Determination of the temperature-dependent electric conductivity of liver tissue ex vivo and in vivo: Importance for therapy planning for the radiofrequency ablation of liver tumours. International Journal of Hyperthermia. 26(1). 26–33. 58 indexed citations

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

Lademann, Jürgen, Sabine Schanzer, U. Jacobi, et al.. (2005). Synergy effects between organic and inorganic UV filters in sunscreens. Journal of Biomedical Optics. 10(1). 14008–14008. 40 indexed citations

Roggan, A., et al.. (2004). Laser-Induced Thermotherapy of Liver Metastases. Frontiers of radiation therapy and oncology. 38. 106–121. 4 indexed citations

Roggan, A., Jerome Ritz, G. Müller, et al.. (2001). Laser-induced thermotherapy: intra- and extralesionary recurrence after incomplete destruction of experimental liver metastasis. Surgical Endoscopy. 15(11). 1320–1326. 16 indexed citations

Roggan, A., et al.. (2001). Optical properties of native and coagulated porcine liver tissue between 400 and 2400 nm. Lasers in Surgery and Medicine. 29(3). 205–212. 181 indexed citations

Mack, Martin G., Ralf Straub, Katrin Eichler, et al.. (2001). MR-guided laser-induced thermotherapy in recurrent extrahepatic abdominal tumors. European Radiology. 11(10). 2041–2046. 16 indexed citations

Mack, M. G., Roland Straub, Katrin Eichler, et al.. (2001). Percutaneous MR imaging-guided laser-induced thermotherapy of hepatic metastases. Abdominal Imaging. 26(4). 369–374. 76 indexed citations

Germer, Christoph T., Christoph Isbert, D. Albrecht, et al.. (1999). Laser-Induced Thermotherapy Combined With Hepatic Arterial Embolization in the Treatment of Liver Tumors in a Rat Tumor Model. Annals of Surgery. 230(1). 55–55. 38 indexed citations

10.

Germer, C.-T., et al.. (1999). Diffusing Fibre Tip for the Minimally Invasive Treatment of Liver Tumours by Interstitial Laser Coagulation (ILC): An Experimental Ex Vivo Study. Lasers in Medical Science. 14(1). 32–39. 25 indexed citations

11.

Roggan, A., et al.. (1998). 間隙レーザ凝固(LITT)に対する冷却したアプリケータシステムを用いた実験研究および最初の臨床結果. Proc SPIE. 3249. 85–93. 2 indexed citations

12.

Germer, C. T., Christoph Isbert, Dirk R. Albrecht, et al.. (1998). Laser-induced thermotherapy for the treatment of liver metastasis. Surgical Endoscopy. 12(11). 1317–1325. 36 indexed citations

13.

Germer, Christoph‐Thomas, A. Roggan, Christoph Isbert, et al.. (1998). Optical properties of native and coagulated human liver tissue and liver metastases in the near infrared range. Lasers in Surgery and Medicine. 23(4). 194–203. 118 indexed citations

14.

Isbert, Christoph, et al.. (1998). [Thermal laser dosimetry in treatment of liver tumors--correlation of optical tissue parameters with in vivo temperature distribution in VX-2 tumors and healthy liver tissue].. PubMed. 115. 1445–7. 2 indexed citations

15.

Vogl, Thomas J., M. G. Mack, Roland Straub, A. Roggan, & R. Félix. (1997). Magnetic Resonance Imaging - Guided Abdominal Interventional Radiology: Laser-Induced Thermotherapy of Liver Metastases. Endoscopy. 29(6). 577–583. 48 indexed citations

16.

Isbert, Christoph, Christoph‐Thomas Germer, Dirk R. Albrecht, et al.. (1997). Laser-induced thermotherapy (LITT) for the treatment of liver metastases: the correlation of Gd-DTPA-enhanced magnetic resonance imaging (MRI) and histomorphological findings in the chronic model. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 2970. 543–543. 4 indexed citations

17.

Germer, C. T., et al.. (1997). Experimental study of laparoscopic laser-induced thermotherapy for liver tumours. British journal of surgery. 84(3). 317–320. 30 indexed citations

18.

Roggan, A. & Gerhard J. Mueller. (1994). Development of a computer model for the irradiation planning of laser-induced thermotherapy (LTT). Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 2100. 69–69. 1 indexed citations

19.

Roggan, A., Olaf Minet, Christian Schroeder, & Gerhard J. Mueller. (1994). Determination of optical tissue properties with double integrating sphere technique and Monte Carlo simulations. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 2100. 42–42. 28 indexed citations

20.

Roggan, A.. (1993). Measurements of optical tissue properties using integrating sphere technique. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 10311. 103110A–103110A. 19 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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