Justin Visak, Ph.D.

Justin Visak, Ph.D., Assistant Professor, earned his bachelor’s and master’s degrees as well as his Ph.D. from the University of Kentucky. After completing his medical physics residency in the Department of Radiation Oncology at UT Southwestern, he stayed on as faculty in the Division of Medical Physics and Engineering.

Dr. Visak's clinical focus is adaptive radiotherapy on Ethos and Unity; his research interests include adaptive radiotherapy and novel treatment planning technology.

• Adaptive radiotherapy
• Novel treatment planning technology

Evaluating machine learning enhanced intelligent-optimization-engine (IOE) performance for ethos head-and-neck (HN) plan generation

Visak J, Inam E, Meng B, Wang S, Parsons D, Nyugen D, Zhang T, Moon D, Avkshtol V, Jiang S, Sher D, Lin MH Journal of applied clinical medical physics 2023 Jul 24

Clinical experience on patient-specific quality assurance for CBCT-based online adaptive treatment plan

Shen C, Chen L, Zhong X, Gonzalez Y, Visak J, Meng B, Inam E, Parsons D, Godley A, Jiang S, Cai B, Lin MH Journal of applied clinical medical physics 2023 Apr 24

Feasibility of using ring-mounted Halcyon Linac for single-isocenter/two-lesion lung stereotactic body radiation therapy

Pokhrel D, Webster A, Mallory R, Visak J, Bernard ME, McGarry RC, Kudrimoti M Journal of applied clinical medical physics 2022 May 23

Fast generation of lung SBRT plans with a knowledge-based planning model on ring-mounted Halcyon Linac

Visak J, Webster A, Bernard ME, Kudrimoti M, Randall ME, McGarry RC, Pokhrel D Journal of applied clinical medical physics 2021 Nov 22 54-63

Automation and integration of a novel restricted single-isocenter stereotactic body radiotherapy (a-RESIST) method for synchronous two lung lesions

Critchfield LS, Visak J, Bernard ME, Randall ME, McGarry RC, Pokhrel D Journal of applied clinical medical physics 2021 Jul 22 56-65

Letter to the Editor: In Response to Sarkar et al.

Pokhrel D, Visak J Journal of applied clinical medical physics 2021 Jun 22 283-285

Clinical validation of ring-mounted halcyon linac for lung SBRT: comparison to SBRT-dedicated C-arm linac treatments

Pokhrel D, Visak J, Critchfield LC, Stephen J, Bernard ME, Randall M, Kudrimoti M Journal of applied clinical medical physics 2021 Jan 22 261-270

An Automated knowledge-based planning routine for stereotactic body radiotherapy of peripheral lung tumors via DCA-based volumetric modulated arc therapy

Visak J, Ge GY, McGarry RC, Randall M, Pokhrel D Journal of applied clinical medical physics 2021 Jan 22 109-116

Prostate SBRT using O-Ring Halcyon Linac — Plan quality, delivery efficiency, and accuracy

Pokhrel D, Tackett T, Stephen J, Visak J, Amin-Zimmerman F, McGregor A, Strup SE, St Clair W Journal of applied clinical medical physics 2021 Jan 22 68-75

Development and clinical validation of a robust knowledge-based planning model for stereotactic body radiotherapy treatment of centrally located lung tumors

Visak J, McGarry RC, Randall ME, Pokhrel D Journal of applied clinical medical physics 2021 Jan 22 146-155

• American Association of Physicists in Medicine (2017)
• American Society for Radiation Oncology (2020)
• UTSW Medical Physics Adaptive Radiotherapy Fellowship Steering Committee (2023)