Feasibility of a TPS-integrated method to incorporate tumor motion in the margin recipe

Background and purpose: There are several alternatives to the widespread ITV strategy in order to account for breathing-induced motion in PTV margins. The most sophisticated one includes the generation of a motion-compensated CT scan with the CTV placed in its average position – the mid-position approach (MidP). In such configuration, PTV margins integrate breathing as another random error. Despite overall irradiated volume reduction, such approach is barely used in clinical practice because of its dependence to deformable registration and its unavailability in commerci al treatment planning systems.

Source: Medical Dosimetry - March 5, 2021 Category: Radiology Authors: David Dechambre, Lo ïc Vander Veken, Antoine Delor, Edmond Sterpin, Françoise Vanneste, Xavier Geets Source Type: research