K Langen

6.8k total citations · 1 hit paper
124 papers, 5.4k citations indexed

About

K Langen is a scholar working on Radiation, Pulmonary and Respiratory Medicine and Radiology, Nuclear Medicine and Imaging. According to data from OpenAlex, K Langen has authored 124 papers receiving a total of 5.4k indexed citations (citations by other indexed papers that have themselves been cited), including 116 papers in Radiation, 77 papers in Pulmonary and Respiratory Medicine and 69 papers in Radiology, Nuclear Medicine and Imaging. Recurrent topics in K Langen's work include Advanced Radiotherapy Techniques (111 papers), Radiation Therapy and Dosimetry (61 papers) and Medical Imaging Techniques and Applications (38 papers). K Langen is often cited by papers focused on Advanced Radiotherapy Techniques (111 papers), Radiation Therapy and Dosimetry (61 papers) and Medical Imaging Techniques and Applications (38 papers). K Langen collaborates with scholars based in United States, Netherlands and Switzerland. K Langen's co-authors include Sanford L. Meeks, Patrick A. Kupelian, D. T. L. Jones, Twyla R. Willoughby, Thomas H. Wagner, G Olivera, O. Zeidan, J Haimerl, Kenneth J. Ruchala and R. Mañon and has published in prestigious journals such as International Journal of Radiation Oncology*Biology*Physics, Physics in Medicine and Biology and Medical Physics.

In The Last Decade

K Langen

122 papers receiving 5.2k 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.

Organ motion and its management

2001 762 citations K Langen et al. International Journal of Radiation Oncology*Biology*Physics profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
K Langen United States	36	4.9k	3.5k	3.2k	1.4k	241	124	5.4k
Sanford L. Meeks United States	43	4.2k 0.9×	3.1k 0.9×	2.8k 0.9×	1.1k 0.8×	274 1.1×	175	5.5k
Indrin J. Chetty United States	40	4.2k 0.8×	3.7k 1.1×	2.9k 0.9×	1.4k 1.0×	151 0.6×	270	5.5k
Simeon Nill United Kingdom	37	3.2k 0.6×	2.5k 0.7×	2.3k 0.7×	650 0.5×	341 1.4×	173	4.1k
Peter Balter United States	43	4.1k 0.8×	3.8k 1.1×	3.6k 1.1×	1.3k 0.9×	230 1.0×	217	5.8k
Guillaume Landry Germany	34	2.9k 0.6×	2.8k 0.8×	2.3k 0.7×	1.7k 1.3×	105 0.4×	193	4.3k
Jeffrey V. Siebers United States	40	4.7k 1.0×	3.2k 0.9×	3.4k 1.0×	1.2k 0.9×	73 0.3×	137	5.0k
T Mackie United States	31	4.2k 0.9×	2.9k 0.8×	3.1k 1.0×	1.2k 0.8×	81 0.3×	96	4.7k
John E. Bayouth United States	32	2.9k 0.6×	2.7k 0.8×	2.1k 0.6×	800 0.6×	261 1.1×	160	4.2k
Bas W. Raaymakers Netherlands	39	4.9k 1.0×	4.4k 1.3×	3.3k 1.0×	973 0.7×	59 0.2×	191	6.2k
Twyla R. Willoughby United States	31	3.9k 0.8×	2.5k 0.7×	3.0k 0.9×	1.0k 0.7×	70 0.3×	98	4.3k

Countries citing papers authored by K Langen

Since Specialization

Citations

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

Fields of papers citing papers by K Langen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of K Langen

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

Chen, Haijian, Mingyao Zhu, K Langen, et al.. (2025). Applying voxel‐based analysis to oropharyngeal cancer proton therapy patients: A correlation study on radiation‐induced acute dysphagia. Medical Physics. 52(11). e70110–e70110.

Chang, Chih‐Wei, et al.. (2023). Characterization of 250 MeV Protons from the Varian ProBeam PBS System for FLASH Radiation Therapy. International Journal of Particle Therapy. 9(4). 279–289. 9 indexed citations

Rahman, Mahbubur, Petr Brůža, K Langen, et al.. (2020). Characterization of a new scintillation imaging system for proton pencil beam dose rate measurements. Physics in Medicine and Biology. 65(16). 165014–165014. 27 indexed citations

Langner, U. W., John G. Eley, K Langen, et al.. (2017). A method to deliver energy modulated planar proton arc therapy (EMPPAT). 3(1). 3 indexed citations

Poulsen, P.R., John G. Eley, U. W. Langner, Charles B. Simone, & K Langen. (2017). Efficient Interplay Effect Mitigation for Proton Pencil Beam Scanning by Spot-Adapted Layered Repainting Evenly Spread out Over the Full Breathing Cycle. International Journal of Radiation Oncology*Biology*Physics. 100(1). 226–234. 40 indexed citations

Chuong, Michael D., Minesh P. Mehta, K Langen, & William F. Regine. (2014). Is proton beam therapy better than standard radiation therapy? The available evidence points to benefits of proton beam therapy.. PubMed. 12(12). 861–4. 4 indexed citations

Langen, K, N Papanikolaou, John Balog, et al.. (2011). WE‐B‐BRA‐02: QA of Helical Tomotherapy TG‐148. Medical Physics. 38(6Part31). 3799–3799. 1 indexed citations

Kupelian, Patrick A. & K Langen. (2011). Helical Tomotherapy: Image-Guided and Adaptive Radiotherapy. Frontiers of radiation therapy and oncology. 43. 165–180. 14 indexed citations

Smeenk, Robert Jan, Robert J.W. Louwe, K Langen, et al.. (2011). An Endorectal Balloon Reduces Intrafraction Prostate Motion During Radiotherapy. International Journal of Radiation Oncology*Biology*Physics. 83(2). 661–669. 77 indexed citations

10.

Staton, R, K Langen, Patrick A. Kupelian, & Sanford L. Meeks. (2009). Dosimetric effects of rotational output variation and x‐ray target degradation on helical tomotherapy plans. Medical Physics. 36(7). 2881–2888. 17 indexed citations

11.

Lu, Weiguo, Kenneth J. Ruchala, Quan Chen, et al.. (2009). Real-time motion-adaptive-optimization (MAO) in TomoTherapy. Physics in Medicine and Biology. 54(14). 4373–4398. 20 indexed citations

12.

Langen, K, D. Buchholz, Sanford L. Meeks, et al.. (2008). Investigation of Accelerated Partial Breast Patient Alignment and Treatment With Helical Tomotherapy Unit. International Journal of Radiation Oncology*Biology*Physics. 70(4). 1272–1280. 21 indexed citations

13.

Lopatiuk‐Tirpak, O., K Langen, Sanford L. Meeks, et al.. (2008). SU‐GG‐T‐286: Performance of An Improved Optical Computed Tomography Polymer Gel Dosimeter System for 3‐D Dose Verification of Static and Dynamic Phantom Deliveries. Medical Physics. 35(6Part13). 2791–2791. 10 indexed citations

14.

Langen, K, Weiguo Lu, Wilfred Ngwa, et al.. (2008). Correlation between dosimetric effect and intrafraction motion during prostate treatments delivered with helical tomotherapy. Physics in Medicine and Biology. 53(24). 7073–7086. 25 indexed citations

15.

Kupelian, Patrick A., Choonik Lee, K Langen, et al.. (2007). Evaluation of Image-Guidance Strategies in the Treatment of Localized Prostate Cancer. International Journal of Radiation Oncology*Biology*Physics. 70(4). 1151–1157. 96 indexed citations

16.

Buchholz, D., K Langen, G Olivera, et al.. (2006). Evaluation of two tomotherapy-based techniques for the delivery of whole-breast intensity-modulated radiation therapy. International Journal of Radiation Oncology*Biology*Physics. 65(1). 284–290. 60 indexed citations

17.

Zeidan, O., K Langen, Sanford L. Meeks, et al.. (2006). Evaluation of image-guidance protocols in the treatment of head and neck cancers. International Journal of Radiation Oncology*Biology*Physics. 67(3). 670–677. 105 indexed citations

18.

Santhanam, Anand P., Cali Fidopiastis, K Langen, et al.. (2006). Visualization of tumor-influenced 3D lung dynamics. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 6141. 61410C–61410C. 4 indexed citations

19.

Meeks, Sanford L., Joseph F. Harmon, K Langen, et al.. (2005). Performance characterization of megavoltage computed tomography imaging on a helical tomotherapy unit. Medical Physics. 32(8). 2673–2681. 173 indexed citations

20.

Langen, K, Darrell O. Poole, Twyla R. Willoughby, et al.. (2004). Using daily MVCT images to calculate daily rectal dose volume histograms in prostate cancer patients treated with a helical tomotherapy unit. International Journal of Radiation Oncology*Biology*Physics. 60(1). S613–S613. 6 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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