T.K. Lewellen

5.8k total citations · 1 hit paper
145 papers, 4.4k citations indexed

About

T.K. Lewellen is a scholar working on Radiology, Nuclear Medicine and Imaging, Radiation and Biomedical Engineering. According to data from OpenAlex, T.K. Lewellen has authored 145 papers receiving a total of 4.4k indexed citations (citations by other indexed papers that have themselves been cited), including 123 papers in Radiology, Nuclear Medicine and Imaging, 88 papers in Radiation and 36 papers in Biomedical Engineering. Recurrent topics in T.K. Lewellen's work include Medical Imaging Techniques and Applications (118 papers), Radiation Detection and Scintillator Technologies (68 papers) and Advanced X-ray and CT Imaging (30 papers). T.K. Lewellen is often cited by papers focused on Medical Imaging Techniques and Applications (118 papers), Radiation Detection and Scintillator Technologies (68 papers) and Advanced X-ray and CT Imaging (30 papers). T.K. Lewellen collaborates with scholars based in United States, France and United Kingdom. T.K. Lewellen's co-authors include Robert S. Miyaoka, Michael M. Graham, David R. Haynor, Kenneth A. Krohn, Janet S. Rasey, Margaret L. Evans, Wui-Jin Koh, Hubert Vesselle, William B. Eubank and John R. Grierson and has published in prestigious journals such as Diabetes, International Journal of Radiation Oncology*Biology*Physics and IEEE Transactions on Medical Imaging.

In The Last Decade

T.K. Lewellen

140 papers receiving 4.3k 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.

PET-CT image registration in the chest using free-form deformations

2003 634 citations David R. Haynor, Hubert Vesselle et al. IEEE Transactions on Medical Imaging profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
T.K. Lewellen United States	29	3.4k	1.5k	878	764	730	145	4.4k
Sibylle Ziegler Germany	53	7.8k 2.3×	2.0k 1.3×	537 0.6×	1.5k 2.0×	1.8k 2.4×	262	10.6k
David W. Townsend United States	42	4.6k 1.4×	1.2k 0.8×	201 0.2×	1.4k 1.9×	1.4k 1.9×	106	6.5k
Edward J. Hoffman United States	39	4.9k 1.5×	1.8k 1.2×	212 0.2×	1.1k 1.4×	643 0.9×	87	6.4k
Arion F. Chatziioannou United States	42	5.0k 1.5×	2.0k 1.3×	201 0.2×	2.1k 2.8×	555 0.8×	150	6.8k
Dimitris Visvikis France	57	9.4k 2.8×	2.5k 1.6×	500 0.6×	2.5k 3.3×	3.2k 4.4×	377	11.4k
G. Russo Italy	30	1.1k 0.3×	565 0.4×	203 0.2×	398 0.5×	898 1.2×	211	2.9k
David L. Buckley United Kingdom	46	7.0k 2.1×	209 0.1×	435 0.5×	550 0.7×	1.4k 1.9×	132	8.4k
Johan Nuyts Belgium	50	6.8k 2.0×	1.3k 0.9×	226 0.3×	3.4k 4.4×	1.0k 1.4×	302	8.9k
Walter J. Lorenz Germany	33	2.7k 0.8×	751 0.5×	88 0.1×	555 0.7×	937 1.3×	113	4.4k
George T.Y. Chen United States	51	4.7k 1.4×	5.0k 3.3×	424 0.5×	1.4k 1.8×	4.0k 5.4×	187	8.6k

Countries citing papers authored by T.K. Lewellen

Since Specialization

Citations

This map shows the geographic impact of T.K. Lewellen'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 T.K. Lewellen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites T.K. Lewellen more than expected).

Fields of papers citing papers by T.K. Lewellen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of T.K. Lewellen

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

Rudell, Jacques C., et al.. (2017). A CMOS front-end interface ASIC for SiPM-based positron emission tomography imaging systems. PubMed. 2017. 1–4. 5 indexed citations

Harrison, Robert L., et al.. (2014). A Virtual Clinical Trial of FDG-PET Imaging of Breast Cancer: Effect of Variability on Response Assessment. Translational Oncology. 7(1). 138–146. 10 indexed citations

Hunter, William C., Harrison H. Barrett, Wendy McDougald, et al.. (2013). SCOUT: a fast Monte-Carlo modeling tool of scintillation camera output. Physics in Medicine and Biology. 58(11). 3581–3598. 6 indexed citations

Lewellen, T.K., et al.. (2012). Impact of analog IC impairments in SiPM interface electronics. PubMed. 2012. 3572–3574. 1 indexed citations

Champley, Kyle, L.R. MacDonald, T.K. Lewellen, Robert S. Miyaoka, & Paul E. Kinahan. (2011). DOI‐based reconstruction algorithms for a compact breast PET scanner. Medical Physics. 38(3). 1660–1671. 4 indexed citations

Haselman, Michael, Scott Hauck, T.K. Lewellen, & Robert S. Miyaoka. (2009). FPGA-based pulse parameter discovery for positron emission tomography. PubMed. 2009. 2956–2961. 10 indexed citations

Miyaoka, Robert S., et al.. (2009). Design of a real time FPGA-based three dimensional positioning algorithm. PubMed. 2009. 3652–3659. 4 indexed citations

Champley, Kyle, T.K. Lewellen, L.R. MacDonald, Robert S. Miyaoka, & Paul E. Kinahan. (2008). Statistical three-dimensional positioning algorithm for high-resolution dMiCE PET detector. PubMed. 2009. 4751–4754. 5 indexed citations

MacDonald, L.R., John Edwards, T.K. Lewellen, James V. Rogers, & Paul E. Kinahan. (2008). Clinical imaging characteristics of the positron emission mammography PEM Flex Solo II. PubMed. 11(2008). 4494–4501. 13 indexed citations

10.

MacDonald, L.R., Adam Alessio, Scott D. Wollenweber, et al.. (2008). Measured count-rate performance of the Discovery STE PET/CT scanner in 2D, 3D and partial collimation acquisition modes. Physics in Medicine and Biology. 53(14). 3723–3738. 30 indexed citations

11.

Harrison, Robert L., Paul E. Kinahan, & T.K. Lewellen. (2007). A generalized simulation description language. PubMed. 5. 4012–4014. 3 indexed citations

12.

Kinahan, Paul E., Adam Alessio, Scott D. Wollenweber, et al.. (2007). Motion-free PET: Compensating for patient respiration in whole-body PET/CT imaging. 48(3). 1137–53.

13.

Gillispie, Steven B., et al.. (2007). Expanding SimSET to include block detectors: performance with pseudo-blocks and a true block model. PubMed. 4. 4275–4278. 2 indexed citations

14.

Alessio, Adam, Paul E. Kinahan, & T.K. Lewellen. (2005). Improved quantitation for PET/CT image reconstruction with system modeling and anatomical priors. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 5747. 695–695. 6 indexed citations

15.

Haynor, David R., et al.. (2003). PET-CT image registration in the chest using free-form deformations. IEEE Transactions on Medical Imaging. 22(1). 120–128. 634 indexed citations breakdown →

16.

Badawi, Ramsey D., Nuno C. Ferreira, S.G. Kohlmyer, et al.. (2000). A comparison of normalization effects on three whole-body cylindrical 3D PET systems. Physics in Medicine and Biology. 45(11). 3253–3266. 12 indexed citations

17.

Koh, Wui-Jin, Janet S. Rasey, Lanell M. Peterson, et al.. (1995). Evaluation of oxygenation status during fractionated radiotherapy in human nonsmall cell lung cancers using [F-18]fluoromisonidazole positron emission tomography. International Journal of Radiation Oncology*Biology*Physics. 33(2). 391–398. 229 indexed citations

18.

Koh, Wui-Jin, Janet S. Rasey, Margaret L. Evans, et al.. (1992). Imaging of hypoxia in human tumors with [F-18]fluoromisonidazole. International Journal of Radiation Oncology*Biology*Physics. 22(1). 199–212. 381 indexed citations

19.

Krohn, K. A., J. M. Link, & T.K. Lewellen. (1986). The use of 50 MeV protons to produce C-11 and O-15. Journal of Labelled Compounds and Radiopharmaceuticals. 23. 1190–1192. 5 indexed citations

20.

Lewellen, T.K., David L. Williams, Robert Murano, Glen W. Hamilton, & Wil B. Nelp. (1978). A field procedure for the quantitative assessment of nuclear imaging cameras.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 19(8). 954–8. 2 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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