Bulletin of the American Physical Society
90th Annual Meeting of the Southeastern Section of the APS
Thursday–Saturday, November 9–11, 2023; Eastern Kentucky University, Richmond, Kentucky
Session A01: Biophysics and Medical Physics I
8:30 AM–9:48 AM,
Thursday, November 9, 2023
Keen Johnson
Room: South Room
Chair: William Heller, Oak Ridge National Lab
Abstract: A01.00004 : Implementation and Validation of a Respiratory Gating Program*
9:24 AM–9:36 AM
Presenter:
Sophia C Turner
(University of Southern Mississippi)
Authors:
Sophia C Turner
(University of Southern Mississippi)
Zachary Christ
(Forrest General Cancer Center)
Michael Vera
(University of Southern Mississippi)
Jason Stanford
(Forrest General Cancer Center)
Collaboration:
None
Respiratory-gated treatment allows for a smaller PTV, and dose escalation; however, tumor motion varies and the ability to deliver the treatment at a precise phase of the breathing cycle is difficult and requires validation of the planned treatments versus the treatment delivered. This project utilize a commercially available phantom and an ion chamber detector to explore the efficacy of a recently adopted method of phase base respiratory gated treatment over the 30-70 % of the breathing cycle.
Our results validated the accuracy of the gated treatment to be within 2.5% of the planned vs delivered. In addition, PTV was on order of 41% smaller for the 30-70% phase gated treatment.
*None
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