Please note: The University of Texas Health Science Center at San Antonio will now be called "UT Health San Antonio."

Search Program Faculty/Research

Sotirios Stathakis, Ph.D.



Dr. Stathakis is an Associate Professor in the Department of Radiation Oncology and Radiology at the University of Texas Health Science Center in San Antonio. His research interests include Image-guided, Intensity Modulated Radiotherapy (IG-IMRT), Patient Specific Quality Assurance, Dose Calculation Algorithms, Advanced Treatment Planning Techniques and Stereotactic Body Radiotherapy.

Selected Publications  

Myers PA, Mavroidis P, Papanikolaou N, Stathakis SComparing conformal, arc radiotherapy and helical tomotherapy in craniospinal irradiation planning. J Appl Clin Med Phys. 2014 Sep 8;15(5):4724.

Komisopoulos G, Mavroidis P, Rodriguez S, Stathakis S, Papanikolaou N, Nikiforidis GC, Sakellaropoulos GC. Radiobiologic comparison of helical tomotherapy, intensity modulated radiotherapy, and conformal radiotherapy in treating lung cancer accounting for secondary malignancy risks. Med Dosim. 2014 Winter;39(4):337-47

Kauweloa KI, Gutierrez AN, Bergamo A, Stathakis S, Papanikolaou N, Mavroidis P. Practical aspects and uncertainty analysis of biological effective dose (BED) regarding its three-dimensional calculation in multiphase radiotherapy treatment plans. Med Phys. 2014 Jul;41(7):071707.

Markovic M, Stathakis S, Mavroidis P, Jurkovic IA, Papanikolaou N. Characterization of a two-dimensional liquid-filled ion chamber detector array used for verification of the treatments in radiotherapy. Med Phys. 2014 May;41(5):051704

Kauweloa KI, Gutierrez AN, Bergamo A, Stathakis S, Papanikolaou N, Mavroidis P.Pediatric Cranio-spinal Axis Irradiation: Comparison of Radiation-induced Secondary Malignancy Estimations Based on Three Methods of Analysis for Three Different Treatment Modalities.  Technol Cancer Res Treat. 2015 Apr;14(2):169-80.

Stathakis S, Mavroidis P, Shi C, Xu J, Kauweloa KI, Narayanasamy G, Papanikolaou N. 6.γ+ index: A new evaluation parameter for quantitative quality assurance. Comput Methods Programs Biomed. 2014 Apr;114(1):60-9

Mavroidis P, Milickovic N, Cruz WF, Tselis N, Karabis A, Stathakis S, Papanikolaou N, Zamboglou N, Baltas D. Comparison of different fractionation schedules toward a single fraction in high-dose-rate brachytherapy as monotherapy for low-risk prostate cancer using 3-dimensional radiobiological models.Int J Radiat Oncol Biol Phys. 2014 Jan 1;88(1):216-23

Stathakis S, Myers P, Esquivel C, Mavroidis P, Papanikolaou N. Characterization of a novel 2D array dosimeter for patient-specific quality assurance with volumetric arc therapy.Med Phys. 2013 Jul;40(7):071731

Vazquez Quino LA, Chen X, Fitzpatrick M, Shi C, Stathakis S, Gutierrez A, Esquivel C, Mavroidis P, Alkhatib H, Papanikolaou N. Patient specific pre-treatment QA verification using an EPID approach.Technol Cancer Res Treat. 2014 Feb;13(1):1-10.

Myers P, Stathakis S, Mavroidis P, Esquivel C, Papanikolaou N. Evaluation of localization errors for craniospinal axis irradiation delivery using volume modulated arc therapy and proposal of a technique to minimize such errors.Radiother Oncol. 2013 Jul;108(1):107-13

Dzintars E, Stathakis S, Mavroidis P, Sadeghi A, Papanikolaou N. Performance of independent dose calculation in helical tomotherapy: implementation of the MCSIM code. Australas Phys Eng Sci Med. 2012 Dec;35(4):423-38.

Dzintars E, Papanikolaou N, Mavroidis P, Sadeghi A, Stathakis Application of an independent dose calculation software for estimating the impact of inter-fractional setup shifts in Helical Tomotherapy treatments. S. Phys Med. 2013 Nov;29(6):615-23.

Vazquez-Quino LA, Massingill B, Shi C, Gutierrez A, Esquivel C, Eng T, Papanikolaou N, Stathakis SMonte Carlo modeling of a Novalis Tx Varian 6 MV with HD-120 multileaf collimator.J Appl Clin Med Phys. 2012 Sep 6;13(5):3960

Knaup C, Mavroidis P, Esquivel C, Stathakis S, Swanson G, Baltas D, Papanikolaou N. On the quantification of the dosimetric accuracy of collapsed cone convolution superposition (CCCS) algorithm for small lung volumes using IMRT.  Med Phys. 2012 Jun;39(6):3291-8.

Calvo OI, Gutiérrez AN, Stathakis S, Esquivel C, Papanikolaou N.On the quantification of the dosimetric accuracy of collapsed cone convolution superposition (CCCS) algorithm for small lung volumes using IMRT. J Appl Clin Med Phys. 2012 May 10;13(3):3751.

Myers P, Stathakis S, Gutiérrez AN, Esquivel C, Mavroidis P, Papanikolaou N. Evaluation of PTW Seven29 for tomotherapy patient-specific quality assurance and comparison with ScandiDos Delta. J Med Phys. 2012 Apr;37(2):72-80

Radiation Oncology


Ph.D., Medical Physics, University of Patras, 2005

M.S., Medical Physics, University of Aberdeen, 1997

B.S., Physics, University of Waterloo, 1995



Phone: (210) 450-5664

Research Profile

Graduate Students

Courtney Bosse (MS)
Radiological Sciences

Blake Tuazon (MS)
Radiological Sciences