Vikren Sarkar

Vikren Sarkar, PhD, DABR

Languages spoken: English, French

Academic Information

Departments Primary - Radiation Oncology

Vikren Sarkar, PhD, is a tenured associate professor in the Department of Radiation Oncology at the University of Utah and a medical physicist at Huntsman Cancer Hospital (HCH). Dr. Sarkar earned a B.A. from Colorado College and a B.S. degree from Columbia University. He received his Ph.D. in medical physics from the University of Texas Health Sciences Center at San Antonio, Texas. Dr. Sarkar is an active member of the American Association of Physicists in Medicine (AAPM), and the American Society for Therapeutic Radiology and Oncology (ASTRO). Dr. Sarkar’s clinical and research interests include low-dose image-guided radiotherapy (IGRT), radiosurgery (SRS), stereotactic body radiation therapy (SBRT), proton therapy and adaptive radiotherapy. He is one of the lead medical physicists for proton therapy, SRS/SBRT, and Total Body Irradiation (TBI).

Education History

Undergraduate Colorado College
 BA
Undergraduate Columbia University
 BS
Doctoral Training University of Texas Health Science Center
 PhD
Postdoctoral Fellowship University of Utah
 Postdoctoral Fellow
Professional Other Quantic School of Business and Technology
 Executive MBA

Selected Publications

Journal Article

  1. Sarkar V, Shi C, Papanikolaou N (2011). DART, a platform for the creation and registration of cone beam digital tomosynthesis datasets. Australas Phys Eng Sci Med, 34(1), 5-13.
  2. Ahmed F, Sarkar V, Gaffney DK, Salter B, Poppe MM (2016). Analysis of nodal coverage utilizing image guided radiation therapy for primary gynecologic tumor volumes. Med Dosim, 41(3), 195-8.
  3. Salter BJ, Fuss M, Sarkar V, Wang B, Rassiah-Szegedi P, Papanikolaou N, Hollingshaus S, Shrieve DC (2009). Optimization of isocenter location for intensity modulated stereotactic treatment of small intracranial targets. Int J Radiat Oncol Biol Phys, 73(2), 546-55.
  4. Rizvi AA, Quraishi MI, Sarkar V, DuBois C, Biro S, Mulhall (2009). The effect of pH and viscosity on bovine spermatozoa motility under controlled conditions. International urology and nephrology, 41(3), 523-30.
  5. Sarkar V, Lin L, Shi C, Papanikolaou (2007). Quality assurance of the multileaf collimator with helical tomotherapy: design and implementation. Medical physics, 34(7), 2949-56.
  6. Szegedi M, Rassiah-Szegedi P, Sarkar V, Hinkle J, Wang B, Huang YH, Zhao H, Joshi S, Salter B (2012). Tissue characterization using a phantom to validate four-dimensional tissue deformation. Medical physics, 39(10), 6065-70.
  7. Zhao H, Williams N, Poppe M, Sarkar V, Wang B, Rassiah-Szegedi P, Huang YJ, Kokeny K, Gaffney D, Salter (2019). Comparison of surface guidance and target matching for image-guided accelerated partial breast irradiation (APBI). Medical physics, 46(11), 4717-4724.
  8. Sarkar V, Szegedi M, Paxton A, Nelson G, Rassiah-Szegedi P, Reddy CB, Tao R, Hitchcock YJ, Kokeny KE, Salter B (2020). Preliminary clinical experience with Calypso anchored beacons for tumor tracking in lung SBRT. Medical physics, 47(9), 4407-4415.
  9. Szegedi M, Boehm C, Paxton A, Rassiah-Szegedi P, Sarkar V, Zhao H, Su F, Kokeny KE, Lloyd S, Tward J, Salter B (2020). Comparison of transperineal ultrasound image guidance technique to transabdominal technique for prostate radiation therapy. Medical physics, 47(12), 6113-6121.
  10. Salter BJ, Sarkar V, Wang B, Shukla H, Szegedi M, Rassiah-Szegedi (2011). Rotational IMRT delivery using a digital linear accelerator in very high dose rate 'burst mode'. Physics in medicine and biology, 56(7), 1931-46.
  11. Sarkar V, Shi C, Rassiah-Szegedi P, Diaz A, Eng T, Papanikolaou (2009). The effect of a limited number of projections and reconstruction algorithms on the image quality of megavoltage digital tomosynthesis. Journal of applied clinical medical physics, 10(3), 155-172.
  12. Wang B, Rassiah-Szegedi P, Zhao H, Huang YJ, Sarkar V, Szegedi M, Kokeny KE, Anker CJ, Shrieve DC, Salter B (2011). Initial experience and clinical comparison of two image guidance methods for SBRT treatment: 4DCT versus respiratory-triggered imaging. Journal of applied clinical medical physics, 12(3), 3429.
  13. Rassiah-Szegedi P, Wang B, Szegedi M, Tward J, Zhao H, Huang YJ, Sarkar V, Shrieve D, Salter (2011). Individualized margins for prostate patients using a wireless localization and tracking system. Journal of applied clinical medical physics, 12(3), 3516.
  14. Szegedi M, Sarkar V, Rassiah-Szegedi P, Wang B, Huang YJ, Zhao H, Salter (2012). 4D CT image acquisition errors in SBRT of liver identified using correlation. Journal of applied clinical medical physics, 13(1), 3564.
  15. Szegedi M, Hinkle J, Rassiah P, Sarkar V, Wang B, Joshi S, Salter (2013). Four-dimensional tissue deformation reconstruction (4D TDR) validation using a real tissue phantom. Journal of applied clinical medical physics, 14(1), 4012.
  16. Rassiah-Szegedi P, Szegedi M, Sarkar V, Streitmatter S, Huang YJ, Zhao H, Salter (2014). Dosimetric impact of the 160 MLC on head and neck IMRT treatments. Journal of applied clinical medical physics, 15(6), 4770.
  17. Sarkar V, Wang B, Zhao H, Lynch B, James JA, McCullough KT, Salter B (2015). Percent depth-dose distribution discrepancies from very small volume ion chambers. Journal of applied clinical medical physics, 16(2), 5230.
  18. Sarkar V, Huang L, Rassiah-Szegedi P, Zhao H, Huang J, Szegedi M, Salter B (2015). Planning for mARC treatments with the Eclipse treatment planning system. Journal of applied clinical medical physics, 16(2), 5351.
  19. Sarkar V, Paxton A, Kunz J, Szegedi M, Nelson G, Rassiah-Szegedi P, Zhao H, Huang YJ, Su F, Salter B (2019). A systematic evaluation of the error detection abilities of a new diode transmission detector. Journal of applied clinical medical physics, 20(9), 122-132.
  20. Zhao H, Sarkar V, Wang B, Rassiah-Szegedi P, Szegedi M, Jessica Huang Y, Huang L, Tward J, Salter (2019). Calculation of delivered composite dose from Calypso tracking data for prostate cancer: And subsequent evaluation of reasonable treatment interruption tolerance limits. Journal of applied clinical medical physics, 20(8), 105-113.
  21. Nelson G, Pigrish V, Sarkar V, Su FC, Salter (2019). Technical Note: The use of DirectDensityTM and dual-energy CT in the radiation oncology clinic. Journal of applied clinical medical physics, 20(3), 125-131.
  22. Zhao H, Wang B, Sarkar V, Rassiah-Szegedi P, Huang YJ, Szegedi M, Huang L, Gonzalez V, Salter (2016). Comparison of surface matching and target matching for image-guided pelvic radiation therapy for both supine and prone patient positions. Journal of applied clinical medical physics, 17(3), 14-24.
  23. Rassiah P, Su FF, Huang YJ, Spitznagel D, Sarkar V, Szegedi MW, Zhao H, Paxton AB, Nelson G, Salter B (2020). Using failure mode and effects analysis (FMEA) to generate an initial plan check checklist for improved safety in radiation treatment. Journal of applied clinical medical physics, 21(8), 83-91.
  24. Szegedi M, Sarkar V, Paxton A, Rassiah P, Salter B (2021). Seismic reinforcement of a linac installation. Journal of applied clinical medical physics, 22(4), 166-171.
  25. Nelson G, Paxton A, Kunz J, Huang J, Szegedi M, Sarkar V, Salter (2021). FMEA occurrence values for four failure modes occurring using look-up tables for dose calculations. Journal of applied clinical medical physics, 22(2), 9-12.
  26. Paxton AB, Sarkar V, Kunz JN, Szegedi M, Zhao H, Huang YJ, Nelson G, Rassiah P, Su FF, Salter B (2020). Evaluation of the effects of implementing a diode transmission device into the clinical workflow. Physica medica, 80, 335-341.
  27. Sarkar V, Stathakis S, Papanikolaou (2008). A Monte Carlo model for independent dose verification in serial tomotherapy. Technology in cancer research & treatment, 7(5), 385-92.
  28. Sarkar V, Shi C, Rassiah-Szegedi P, Eng T, Diaz A, Papanikolaou (2009). A feasibility study on the use of digital tomosynthesis with individually-acquired megavoltage portal images for target localization. Journal of B.U.ON., 14(1), 103-8.
  29. Sarkar V, Gutierrez AN, Stathakis S, Swanson GP, Papanikolaou (2009). A virtual fluoroscopy system to verify seed positioning accuracy during prostate permanent seed implants. Journal of B.U.ON., 14(3), 447-50.
  30. Odell DW, Albrechtsen RD, Sindt JE, Gole R, Brown S, Parsons MW, Paxton AB, Sarkar V, Lloyd S, Brogan SE, Tao (2021). The Effect of Measured Radiotherapy Dose on Intrathecal Drug Delivery System Function. Neuromodulation, 24(7), 1204-1208.
  31. Sarkar V, Lloyd S, Paxton A, Huang L, Su FC, Tao R, Tward J, Zhao H, Salter (2018). Daily breathing inconsistency in pancreas SBRT: a 4DCT study. Journal of gastrointestinal oncology, 9(6), 989-995.
  32. Sarkar V, Wang B, Hinkle J, Gonzalez VJ, Hitchcock YJ, Rassiah-Szegedi P, Joshi S, Salter B (2012). Dosimetric evaluation of a "virtual" image-guidance alternative to explicit 6 degree of freedom robotic couch correction. Practical radiation oncology, 2(2), 122-37.
  33. Salter BJ, Szegedi M, Boehm C, Sarkar V, Rassiah-Szegedi P, Wang B, Zhao H, Huang J, Huang L, Kokeny K, Tward J (2017). Comparison of 2 transabdominal ultrasound image guidance techniques for prostate and prostatic fossa radiation therapy. Practical radiation oncology, 7(2), e99-e107.
  34. Zhao H, Paxton A, Sarkar V, Huang YJ, Frances Su FC, Haacke C, Rassiah-Szegedi P, Szegedi M, Salter (2021). Prevention of Radiation Therapy Treatment Deviations by a Novel Combined Biometric, Radiofrequency Identification, and Surface Imaging System. Practical radiation oncology, 11(2), e229-e235.
  35. Sarkar V, Huang L, Huang YJ, Szegedi MW, Rassiah-Szegedi P, Zhao H, Hitchcock YJ, Kokeny KE, Wang B, Salter B (2016). Dosimetric evaluation of abdominal compression as a method to reduce the incidence of radiation-induced pneumonitis in lung SBRT treatment. Journal of radiosurgery and SBRT, 4(2), 125-132.
  36. Sarkar V, Huang L, Huang YJ, Szegedi MW, Rassiah-Szegedi P, Zhao H, Salter B (2016). Head to head comparison of two commercial phantoms used for SRS QA. Journal of radiosurgery and SBRT, 4(3), 213-223.
  37. Sarkar V, Paxton A, Rassiah P, Kokeny KE, Hitchcock YJ, Salter B (2020). Evaluation of dose distribution differences from five algorithms implemented in three commercial treatment planning systems for lung SBRT. Journal of radiosurgery and SBRT, 7(1), 57-66.
  38. Sarkar V, Lloyd S, Paxton A, Dial C, Rassiah P, Szegedi MW, Hitchcock YJ, Salter B (2021). Evaluation of the dosimetric impact of changes in shoulder position on target coverage for spine SBRT to metastases in the lower cervical spine region. Journal of radiosurgery and SBRT, 7(4), 321-328.
  39. Ganesan K, Lloyd S, Sarkar (2016). Discovering Related Clinical Concepts Using Large Amounts of Clinical Notes. Biomedical engineering and computational biology, 7(Suppl 2), 27-33.
  40. Huang YJ, Harrison A, Sarkar V, Rassiah-Szegedi P, Zhao H, Szegedi M, Huang L, Wilson B, Gaffney DK, Salter B (2016). Detection of late radiation damage on left atrial fibrosis using cardiac late gadolinium enhancement magnetic resonance imaging. Advances in radiation oncology, 1(2), 106-114.
  41. Gonzalez VJ, Hullett CR, Burt L, Rassiah-Szegedi P, Sarkar V, Tward JD, Hazard LJ, Huang YJ, Salter BJ, Gaffney D (2017). Impact of prone versus supine positioning on small bowel dose with pelvic intensity modulated radiation therapy. Advances in radiation oncology, 2(2), 235-243.
  42. Huang YJ, Sarkar V, Paxton A, Zhao H, Su FF, Price R, Salter B (2021). An Investigation of Radiation Treatment Learning Opportunities in Relation to the Radiation Oncology Electronic Medical Record: A Single Institution Experience. Advances in radiation oncology, 7(1), 100812.
  43. Saenz D, Roring J, Cruz W, Sarkar V, Papanikolaou N, Stathakis (2015). Commissioning and cross-comparison of four scanning water tanks. Int J Cancer Oncol, 4, 415.
  44. Li X, Su FC, Sarkar V, Zhao H, Ibanez S, Kunz JN, Nelson G, Jessica Huang (2022). Impact of detector selection on commissioning of Leipzig surface applicators with improving immobilization in high-dose-rate brachytherapy. Brachytherapy, 21(4), 511-519.
  45. Hutten RJ, Nelson G, Sarkar V, Johnson SB, Tao R, Hitchcock Y, Chan J, Schroeder J, Kokeny (2022). Feasibility and clinical utility of a workflow interfacing radiation oncology lung stereotactic body radiotherapy treatment planning and diagnostic radiology. Practical radiation oncology, 12(6), e512-e516.
  46. Dial C,Sarkar V,Nelson G,Paxton A,Salter (2022). Technical note: A method for generating lesion-specific nonuniform rotational margins for targets remote from isocenter. Medical physics,
  47. Gonzalez VJ,Hullett CR,Burt L,Rassiah-Szegedi P,Sarkar V,Tward JD,Hazard LJ,Huang YJ,Salter BJ,Gaffney D (2017). Impact of prone versus supine positioning on small bowel dose with pelvic intensity modulated radiation therapy. Medical physics, 2(2), 235-243.
  48. Huang YJ,Harrison A,Sarkar V,Rassiah-Szegedi P,Zhao H,Szegedi M,Huang L,Wilson B,Gaffney DK,Salter B (2016). Detection of late radiation damage on left atrial fibrosis using cardiac late gadolinium enhancement magnetic resonance imaging. Medical physics, 1(2), 106-114.
  49. Zhao H, Paxton A, Sarkar V, Price RG, Huang J, Su FF, Li X, Rassiah P, Szegedi M, Salter (2022). Surface-Guided Patient Setup Versus Traditional Tattoo Markers for Radiation Therapy: Is Tattoo-Less Setup Feasible for Thorax, Abdomen and Pelvis Treatment?. Cureus, 14(8), e28644.
  50. Sarkar V, Paxton A, Su F, Price R, Nelson G, Szegedi M, James SS, Salter B (2023). An evaluation of the use of DirectSPR images for proton planning in the RayStation treatment planning software. Journal of applied clinical medical physics, 24(5), e13900.
  51. Hopfensperger KM, Li X, Paxton A, Sarkar V, Su FF, Price RG, Salter B, St James (2023). Measurements of fetal dose with Mevion S250i proton therapy system with HYPERSCAN. Journal of applied clinical medical physics, 24(5), e13957.
  52. Zhao H, Sarkar V, Paxton A, Huang YJ, Haacke C, Price RG, Frances Su FC, Szegedi M, Rassiah P, Salter (2023). Technical note: Clinical evaluation of a newly released surface-guided radiation therapy system on DIBH for left breast radiation therapy. Medical physics, 50(10), 5978-5986.
  53. Zhao H, Haacke C, Sarkar V, Paxton A, Huang YJ, Szegedi M, Price RG, Su F, Rassiah P, Salter B Initial Clinical Evaluation of a Novel Combined Biometric, Radio-frequency Identification, and Surface Imaging System. Physica medica,
  54. Zhao H, Sarkar V, Paxton A, Huang YJ, Haacke C, Price RG, Su FF, Szegedi M, Rassiah P, Salter B Clinical Evaluation of a Newly Released Surface-Guided Radiation Therapy system on DIBH for Left Breast Radiation Therapy. Medical physics,
  55. Huang YJ, DeCesaris CM, Sarkar V, Zhao H, Kunz J, Nelson G, Li X, Suneja G, Burt LM, Gaffney D Image-guided preplanning workflow for high-dose-rate interstitial brachytherapy for gynecological malignancies. Brachytherapy,
  56. Kunz J, Sarkar V, Paxton AB, Bhagroo S, Nelson G, Salter (2023). Characterization of an Onboard Transmission Detector for Efficient Linear Accelerator Output Quality Assurance. Cureus, 15(11), e48742.
  57. Zhao H, Haacke C, Sarkar V, Paxton A, Jessica Huang Y, Szegedi M, Price RG, Frances Su FC, Rassiah-Szegedi P, Salter (2023). Initial clinical evaluation of a novel combined biometric, radio-frequency identification, and surface imaging system. Physica medica, 114, 103146.
  58. Huang YJ, DeCesaris CM, Sarkar V, Zhao H, Kunz J, Nelson G, Li X, Suneja G, Burt LM, Gaffney D (2023). Image-guided preplanning workflow for high-dose-rate interstitial brachytherapy for gynecological malignancies. Brachytherapy, 23(1), 25-34.
  59. Nelson G, Sarkar V, Szegedi M, Molineu A, Olch AJ, Kunz JN, Zhao H, Huang YJ, Pillai S, Rassiah (2024). Validation of Acuros for total body irradiation at extended distance. Journal of applied clinical medical physics, e14468.
  60. Dial C, Nelson G, Sarkar V, Paxton A, Price R, Salter (2024). Automation framework for online review of daily dose distributions using CT on Rails in proton therapy. Physica medica, 123, 103379.
  61. Zhao H, Sarkar V, St James S, Paxton A, Su FF, Price RG, Dial C, Poppe M, Gaffney D, Salter (2024). Verification of surface-guided radiation therapy (SGRT) alignment for proton breast and chest wall patients by comparison to CT-on-rails and kV-2D alignment. Journal of applied clinical medical physics, 25(2), e14263.
  62. Zhao H, Nelson G, Sarkar V, Oare C, Szegedi M, James SS, Kunz J, Price R, Huang Y (2024). Comprehensive Image Quality Evaluation and Motion Phantom Studies of an Ultra-Fast (6-Second) Cone-Beam Computed Tomography Imaging System on a Ring Gantry Linear Accelerator. Advances in radiation oncology, 10(2), 101681.
  63. Weil CR, Rock CB, Sarkar V, Gravbrot N, Lew FH, Rock CB, Burt LM, DeCesaris CM, Jensen RL, Shrieve DC, Cannon D (2025). Lack of Impact of Expansion Size From Gross Tumor Volume to Planning Target Volume on Control Rates and Patterns of Recurrence in Fractionated Radiotherapy for WHO Grade 1 Meningiomas. American journal of clinical oncology, 48(8), 403-409.
  64. Zhao H,Nelson G,Sarkar V,Oare C,Szegedi M,James SS,Kunz J,Price R,Huang Y (2025). Comprehensive Image Quality Evaluation and Motion Phantom Studies of an Ultra-Fast (6-Second) Cone-Beam Computed Tomography Imaging System on a Ring Gantry Linear Accelerator. Advances in radiation oncology, 10(2),
  65. Sarkar V,Lloyd S,Paxton A,Dial C,Rassiah P,Szegedi MW,Hitchcock YJ,Salter B (2021). Evaluation of the dosimetric impact of changes in shoulder position on target coverage for spine SBRT to metastases in the lower cervical spine region. Journal of radiosurgery and SBRT, 7(4), 321-328.

Book Chapter

  1. Salter BJ, Wang B, Sarkar (2014). Stereotactic Treatment Planning. 233-264.

Conference Proceedings

  1. V Sarkar, S Stathakis, C Shi, P Rassiah, C Eller, C Esquivel, N Papanikolao (2007). A Monte Carlo based independent dose verification platform for serial tomotherapy. 1, 303-307.

Abstract

  1. Sarkar V, Rassiah-Szegedi P, Szegedi M, Wang B, Zhao H, Huang Y, Shukla H, Salter B (2010). Rotational IMRT Delivery Using a Siemens Artiste in Flattening-Filter-Free, High Dose-Rate Mode. Medical physics, 37(6),
  2. Zhao H, Wang B, Rassiah-Szegedi P, Huang Y, Sarkar V, Szegedi M, Salter B (2010). Comparison of Intrafractional Motion Between Supine and Prone Patient Positions During Radiation Therapy of Pelvic Malignancies Using a 3D Surface Imaging System. Medical physics, 37(6),
  3. Zhao H, Wang B, Rassiah-Szegedi P, Huang Y, Sarkar V, Szegedi M, Salter B (2013). Scanned Percent Depth Dose Curve Discrepancy for Varian TrueBeam Flattening-Filter-Free Photon Beams Using Very Small Sensitive Volume Ion Chamber. Medical physics, 40(6), 237.
  4. Salter BJ, Szegedi M, Wang B, Rassiah-Szegedi P, Zhao H, Huang J, Sarkar V, Tward (2013). Presentation of a New Intrafractional Prostate Monitoring Method with Ultrasound Image Guidance During Radiotherapy Treatment. Medical physics, 40(6), 375.
  5. Zhao H, Wang B, Rassiah-Szegedi P, Huang Y, Sarkar V, Szegedi M, Sadinski M, Kokeny K, Poppe M, Salter B (2011). Comparison of CT-On-Rails and 3D Surface Imaging System for Image Guided Partial Breast Radiation Therapy. Medical physics, 38(6), 3610.
  6. Sarkar V, Wang B, Rassiah-Szegedi P, Szegedi M, Huang Y, Zhao H, Salter B (2010). Impact of Varying the Number of Projection Images Used in Digital Tomosynthesis On the Effective Slice Thickness of the Tomograms. Medical physics, 37(6),
  7. Rassiah-Szegedi P, Szegedi M, Sarkar V, Zhao H, Wang B, Huang Y, Salter B (2010). Accuracy of the Collapsed Convolution Superposition Algorithm Without a Flattening Filter. Medical physics, 37(6),
  8. Wang B, Sadinski M, Sarkar V, Ruhnau S, Szegedi M, Anker C, Rassiah-Szegedi P, Zhao H, Huang Y, Salter B (2011). A Case Study of More Accurate Phase Re-Assignment for 4DCT Images. Medical physics, 38(6), 3553.
  9. Wang B, Sarkar V, Busselberg C, Rassiah-Szegedi P, Zhao H, Huang Y, Szegedi M, Salter B (2012). A Prototype Program for Analyzing 4D Image Guidance Shifts for Lung SBRT. Medical physics, 39(6),
  10. Zhao H, Wang B, Rassiah-Szegedi P, Sarkar V, Huang Y, Szegedi M, Gonzalez V, Salter B (2012). Comparison of CT-On-Rails and a 3D Surface Imaging System for Image Guided Pelvic Radiation Therapy for Both Supine and Prone Patient Positions. Medical physics, 39(6),
  11. Wang B, Sarkar V, Rassiah-Szegedi P, Zhao H, Huang Y, Szegedi M, Shrieve T, Tward JT, Salter B (2013). Direct Clinical Comparison of 2D Versus 3D Transabdominal Ultrasound Image Guidance Methods for Prostate Radiotherapy Treatment. Medical physics, 40(6), 375.
  12. H Zhao, V Sarkar , P Rassiah-Szegedi , Y Huang , M Szegedi , L Huang , B Salte (2014). Scanned Percent Depth Dose Curve Discrepancy for Photon Beams with Physical Wedge in Place (Varian IX) Using Different Sensitive Volume Ion Chambers. Medical physics, 41(6), 357.
  13. L Huang, V Sarkar , S Spiessens, P Rassiah-Szegedi , Y Huang , H Zhao, M Szegedi, B Salte (2014). End to End Testing of a Prototype Eclipse Module for Planning Modulated Arc Therapy On the Siemens Platform. Medical physics, 41(6), 344.
  14. V Sarkar, B Wang, H Zhao, B Lynch, J James, K McCullough, P Rassiah-Szegedi, Y Huang, M Szegedi, L Huang, B Salte (2014). PDD Discrepancies at Opposite Biases From Very Small Volume Ion Chambers When Using Water Scanners. Medical physics, 41(6), 548-549.
  15. Huang Y, Tward J, Rassiah-Szegedi P, Zhao H, Sarkar V, Huang L, Szegedi M, Kokeny K, Salter (2015). Feasibility of MRI-Based Preplan On Low Dose Rate Prostate Brachytherapy. Medical physics, 42(6), 3319.
  16. Sarkar V, Huang L, Huang Y, Szegedi M, Rassiah-Szegedi P, Zhao H, Salter (2015). A Head to Head Comparison of Two Commercial Phantoms Used for SRS QA. Medical physics, 42(6), 3339.
  17. Rassiah-Szegedi P, Szegedi M, Sarkar V, Zhao H, Huang Y, Huang L, Salter (2015). Characterization of Efficiency and Plan Quality for the FFF Beams On Various Anatomical Sites. Medical physics, 42(6), 3370.
  18. Szegedi M, Zhao H, Rassiah P, Sarkar V, Huang J, Huang L, Tward J, Kokeny K, Salter B (2015). Clinical Comparison of 2D Transabdominal and 3D Transperineal Ultrasound Image Guidance Methods for Prostate RT. Radiotherapy and oncology, 115, S494.
  19. Salter BJ, Szegedi M, Tward J, Zhao H, Sarkar V, Rassiah P, Huang L, Huang (2015). 3D Transperineal Ultrasound Image Guidance Methods for Prostate SBRT Radiotherapy Treatment. Radiotherapy and oncology, 115, S460.
  20. Huang J, Anker C, Sarkar V, Rassiah-Szegedi P, Zhao H, Szegedi M, Huang L, Salter B (2014). Skin Lesion Treatment Using High-Dose-Rate Brachytherapy with HAM Applicator: EQD2Gy Comparison with Electron Beam Radiotherapy. Brachytherapy, 13(Supplement 1), S45-S46.
  21. Rassiah-Szegedi P, Szegedi M, Wang B, Sarkar V, Zhao H, Huang J, Salter (2009). Characterization of Dosimetry and Efficiency with the Unflat 6MV Beam for 160 Leaf IMRT.
  22. Sarkar V, Shi C, Papanikolaou (2009). The effect of reconstruction algorithm and number of projection images used as input data on the final quality of megavoltage digital tomosynthesis datasets.
  23. Sarkar V, Shi C, N Papanikolaou (2008). The Effect of Number of Projections On the Accuracy of Volumetric Data Reconstructed Using Digital Tomosynthesis.
  24. Sarkar V, Gutierrez A, Stathakis S, Swanson G, Papanikolaou (2008). A Graphical User Interface for Virtual Fluoroscopy to Aid in Prostate Seed Implant Verification.
  25. Salter B, Fuss M, Sarkar V, Wang B, Hollingshaus S, Papanikolaou N, Tobler M, Shrieve (2008). Optimization of Isocenter Location for Intensity Modulated Stereotactic Treatment of Intracranial Targets.
  26. Swanson G, Shi C, Mavroidis P, Stathakis S, Su F, Ramer R, Sarkar V, Ferreira B, Komisopoulos G, Giantsoudi D, Papanikolaou (2008). Radiobiologically Quantified Treatment Setup Uncertainty Based on Megavoltage (MV) CT Imaging.
  27. Sarkar V, Shi C, Rassiah P, Stathakis S, Papanikolaou (2007). A study using a CCD-based electronic portal imaging device for digital tomosynthesis.
  28. Stathakis S, Sarkar V, Rassiah-Szegedi P, Mavroidis P, Papanikolaou (2007). Monte Carlo Based Dose Verification for Serial Tomotherapy.
  29. Hullett CR, Gonzalez, VJ, Burt L, Rassiah-Szegedi P, Sarkar V, Tward JD, Hazard LJ, Huang YJ, Salter BJ, Gaffney D (2012). Impact of BMI on daily setup variation with pelvic radiotherapy: Is prone positioning a "class solution"?.
  30. Wang B, Sarkar V, Anker CJ, Streitmatter S, Rassiah-Szegedi P, Zhao H, Huang JH, Szegedi M, Salter B (2012). Ultrasound Image Guidance For Abdominal Tumor.
  31. Sarkar V, Wang B, Rassiah-Szegedi P, Zhao H, Huang JY, Szegedi MW, Hitchcock YJ, Kokeny KE, Salter B (2012). Dosimetric Implications Of Abdominal Compression For Lung SBRT Treatment.
  32. Salter B, Sarkar V, Ruhnau S, Rassiah-Szegedi P, Huang Y, Zhao H, Wang B, Szegedi (2010). Increasing the Delivery Efficiency of IMRT DAO-Based Plans Through Segment Reordering.
  33. Salter BJ, Sarkar V, Wang B, Szegedi M, Rassiah-Szegedi P, Zhao H, Huang (2010). Presentation And Evaluation Of A Novel, Combined-mode Intensity-modulated-arc / Static-gantry-IMRT Planning And Delivery Method.
  34. Wang B, Rassiah-Szegedi P, Zhao H, Huang Y, Sarkar V, Szegedi M, Jensen RL, Shrieve DC, Salter B (2010). Evaluation of Intrafractional Motion for Frameless Intracranial Treatments.
  35. Rassiah-Szegedi P, Sarkar V, Wang B, Zhao H, Huang Y, Szegedi M, Salter B (2010). Treatment Planning Evaluation of a Novel Combined-Mode Intensity Modulated Arc / Static Gantry IMRT Delivery Approach for Hypo-Fractionated Treatment (SBRT/SRS).
  36. Salter BJ, Wang B, Ruhnau S, Hinkle J, Joshi S, Sarkar V, Sadinski M, Hitchcock YJ, Kokeny KE, Shrieve D (2011). Validation of Internal Target Volume (ITV) Consistency using 4DCT for Lung SBRT Treatments.
  37. Wang B, Sarkar V, Rassiah-Szegedi P, Zhao H, Huang Y, Szegedi M, Shrieve DC, Salter B (2011). Evaluation of a novel combined-mode planning and delivery method for challenging stereotactic radiosurgery cases, The 10th Biennial Congress and Exhibition of International Stereotactic Radiosurgery Society.
  38. Hitchcock YJ, Sarkar V, Salter B, Shrieve D (2011). CT On-Rails (CTOR) Characterization of Tumor Volume Rate-of-Reduction in Head Neck Squamous Cell Carcinoma Treated with IMRT Simultaneous Integrated Boost (IMRT-SIB) and Concurrent Chemotherapy.
  39. Huang Y, Rassiah-Szegedi P, Wang B, Zhao H, Sarkar V, Szegedi M, Gaffney D, Salter B (2011). The Feasibility of Image-Guided MRI Pre-plan on HDR Syed Implants: A Case Study.
  40. Salter BJ, Sarkar V, Huang L, Rassiah P, Zhao H, Huang J, Szegedi MW, Gaffney D (2014). Hybrid Modulated Arc Therapy (HMAT) on an Artiste Linac. 90(Supplement 1), S941.
  41. Sarkar V, Huang L, Suneja G, Rassiah P, Huang J, Zhao H, Szegedi M, Jensen R, Shrieve D, Salter (2015). Hybrid Modulated Arc Therapy for treatment of Cavernous Sinus Lesions. 3(S1), 53.
  42. Huang L, Sarkar V, Suneja G, Rassiah P, Huang J, Zhao H, Szegedi M, Jensen R, Shrieve D, Salter (2015). Leaf width effect on VMAT for stereotactic radiosurgery (SRS) of cavernous sinus. 3(S1), 53.
  43. Huang L, Sarkar V, Rassiah P, Huang J, Zhao H, Szegedi M, Hitchcock Y, Salter (2015). Exploring the impact of leaf width on VMAT treatment of spine SBRT. 3(S1), 48.
  44. Zhao H,Wang B,Rassiah'szegedi P,Huang Y,Sarkar V,Szegedi M,Salter B (2013). SU'E¿T¿145: Scanned Percent Depth Dose Curve Discrepancy for Varian TrueBeam Flattening'Filter'Free Photon Beams Using Very Small Sensitive Volume Ion Chamber. Medical physics, 40(6), 237.
  45. Wang B,Sarkar V,Rassiah'szegedi P,Zhao H,Huang Y,Szegedi M,Shrieve T,Tward JT,Salter B (2013). SU'E¿U¿09: Direct Clinical Comparison of 2D Versus 3D Transabdominal Ultrasound Image Guidance Methods for Prostate Radiotherapy Treatment. Medical physics, 40(6), 375.
  46. Salter BJ,Szegedi M,Wang B,Rassiah'szegedi P,Zhao H,Huang J,Sarkar V,Tward (2013). SU'E¿U¿08: Presentation of a New Intrafractional Prostate Monitoring Method with Ultrasound Image Guidance During Radiotherapy Treatment. Medical physics, 40(6), 375.
  47. Zhao H,Wang B,Rassiah'szegedi P,Sarkar V,Huang Y,Szegedi M,Gonzalez V,Salter (2012). SU'E¿J¿60: Comparison of CT'On'Rails and a 3D Surface Imaging System for Image Guided Pelvic Radiation Therapy for Both Supine and Prone Patient Positions. Medical physics, 39(6), 3666.
  48. Wang B,Sarkar V,Busselberg C,Rassiah'szegedi P,Zhao H,Huang Y,Szegedi M,Salter (2012). SU'E¿T¿404: A Prototype Program for Analyzing 4D Image Guidance Shifts for Lung SBRT. Medical physics, 39(6), 3797.
  49. Wang B,Sadinski M,Sarkar V,Ruhnau S,Szegedi M,Anker C,Rassiah'szegedi P,Zhao H,Huang Y,Salter (2011). SU'E¿T¿286: A Case Study of More Accurate Phase Re'Assignment for 4DCT Images. Medical physics, 38(6), 3553.
  50. Salter B,Wang B,Sadinski M,Ruhnau S,Sarkar V,Hinkle J,Hitchcock Y,Kokeny K,Joshi (2011). WE'E¿BRC¿06: Comparison of Two Methods of Contouring Internal Target Volume on Multiple 4DCT Data Sets from the Same Subjects: Maximum Intensity Projection and Combination of 10 Phases. Medical physics, 38(6), 3820.
  51. Szegedi M,Hinkle J,Joshi S,Sarkar V,Rassiah'szegedi P,Wang B,Salter (2011). WE'E¿BRC¿05: Voxel Based Four Dimensional Tissue Deformation Reconstruction (4DTDR) Validation Using a Real Tissue Phantom. Medical physics, 38(6), 3819.
  52. Zhao H,Wang B,Rassiah'szegedi P,Huang Y,Sarkar V,Szegedi M,Sadinski M,Kokeny K,Poppe M,Salter (2011). SU'E¿T¿527: Comparison of CT'On'Rails and a 3D Surface Imaging System for Image Guided Partial Breast Radiation Therapy. Medical physics, 38(6), 3610.
  53. Zhao H,Wang B,Rassiah'szegedi P,Huang Y,Sarkar V,Szegedi M,Salter (2010). SU'GG'J¿26: Comparison of Intrafractional Motion between Supine and Prone Patient Positions during Radiation Therapy of Pelvic Malignancies Using a 3D Surface Imaging System. Medical physics, 37(6), 3150.
  54. Rassiah'szegedi P,Szegedi M,Sarkar V,Zhao H,Wang B,Huang Y,Salter (2010). SU'GG'T¿592: Accuracy of the Collapsed Convolution Superposition Algorithm without a Flattening Filter. Medical physics, 37(6), 3323.
  55. Sarkar V,Wang B,Rassiah'szegedi P,Szegedi M,Huang Y,Zhao H,Salter (2010). SU'GG'I¿129: Impact of Varying the Number of Projection Images Used in Digital Tomosynthesis on the Effective Slice Thickness of the Tomograms. Medical physics, 37(6), 3131.
  56. Salter B,Sarkar V,Ruhnau S,Rassiah'szegedi P,Huang Y,Zhao H,Wang B,Szegedi (2010). SU'GG'T¿133: Increasing the Delivery Efficiency of IMRT DAO'Based Plans through Segment Reordering. Medical physics, 37(6), 3215.
  57. Sarkar V,Rassiah'szegedi P,Szegedi M,Wang B,Zhao H,Huang Y,Shukla H,Salter (2010). SU'GG'T¿130: Rotational IMRT Delivery Using a Siemens Artiste in Flattening'Filter'Free, High Dose'Rate Mode. Medical physics, 37(6), 3214.
  58. Sarkar V,Shi C,Papanikolaou (2009). SU'FF'T¿86: The Effect of Set'Up Errors On the Final Target Dose Distribution in Step'And'Shoot IMRT Plans Compared to Helical Tomotherapy Plans. Medical physics, 36(6), 2539.
  59. Sarkar V,Shi C,Papanikolaou (2009). SU'FF'J¿86: A Digital Tomosynthesis Applications in Radiotherapy Toolkit. Medical physics, 36(6), 2495-2496.
  60. Sarkar V,Gutiérrez A,Stathakis S,Swanson G,Papanikolaou (2008). SU'GG'J¿10: A Graphical User Interface for Virtual Fluoroscopy to Aid in Prostate Seed Implant Verification. Medical physics, 35(6), 2680.
  61. Sarkar V,Shi C,Papanikolaou (2008). SU'GG'I¿51: The Effect of Number of Projections On the Accuracy of Volumetric Data Reconstructed Using Digital Tomosynthesis. Medical physics, 35(6), 2654.
  62. Swanson G,Shi C,Mavroidis P,Stathakis S,su F,Ramer R,Sarkar V,Ferreira B,Komisopoulos G,Giantsoudi D,Papanikolaou (2008). SU'GG'T¿425: Radiobiologically Quantified Treatment Setup Uncertainties Based On Megavoltage (MV) CT Imaging. Medical physics, 35(6), 2822.
  63. Salter B,Fuss M,Sarkar V,Wang B,Hollingshaus S,Papanikolaou N,Tobler M,Shrieve (2008). SU'GG'T¿435: Optimization of Isocenter Location for Intensity Modulated Stereotactic Treatment of Intracranial Targets. Medical physics, 35(6), 2825.
  64. Shi C,Sarkar V,Lin L,Papanikolaou (2007). TU'D¿M100F¿08: Quality Assurance Protocol of the HiArt Tomotherapy MLC: Design and Implementation. Medical physics, 34(6), 2561.
  65. Stathakis S,Sarkar V,Rassiah'szegedi P,Mavroidis P,Papanikolaou (2007). SU'FF'T¿299: Monte Carlo Based Dose Verification for Serial Tomotherapy. Medical physics, 34(6), 2470.
  66. Sarkar V,Shi C,Rassiah'szegedi P,Stathakis S,Papanikolaou (2007). SU'FF'J¿47: A Feasibility Study Using a CCD'Based EPID for Digital Tomosynthesis. Medical physics, 34(6), 2378-2379.

Other

  1. Sarkar V, Szegedi M, Paxton A, Nelson G, Rassiah-Szegedi P, Reddy CB, Tao R, Hitchcock YJ, Kokeny KE, Salter B (2021). Erratum: "Preliminary clinical experience with Calypso anchored beacons for tumor tracking in lung SBRT" [Med. Phys. (2020)]. Medical physics, 48(1), 533.