Couch and multileaf collimator tracking: A clinical feasibility study for pancreas and liver treatment.

ABSTRACT:

Purpose

Real-time tumor tracking through active correction by the multileaf collimator or treatment couch offers a promising strategy to mitigate delivery uncertainty due to intrafractional tumor motion. This study evaluated the performance of MLC and couch tracking using the prototype iTools Tracking system in TrueBeam Developer Mode and the application for abdominal cancer treatments.

Methods

Experiments were carried out using a phantom with embedded Calypso transponders and a motion simulation platform. Geometric evaluations were performed using a circular conformal field with sinusoidal traces and pancreatic tumor motion traces. Geometric tracking accuracy was retrospectively calculated by comparing the compensational MLC or couch motion extracted from machine log files

SUBMITTER: Zhang L 

PROVIDER: S-EPMC8330968 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature