Automated algorithm for calculation of setup corrections and planning target volume margins for offline image-guided radiotherapy protocols.

ABSTRACT:

Purpose

Each radiotherapy center should have a site-specific planning target volume (PTV) margins and image-guided (IG) radiotherapy (IGRT) correction protocols to compensate for the geometric errors that can occur during treatment. This study developed an automated algorithm for the calculation and evaluation of these parameters from cone beam computed tomography (CBCT)-based IG-intensity modulated radiotherapy (IG-IMRT) treatment.

Methods and materials

A MATLAB algorithm was developed to extract the setup errors in three translational directions (x, y, and z) from the data logged by the CBCT system during treatment delivery. The algorithm also calculates the resulted population setup error and PTV margin based on the van Herk margin recipe and subsequently estimates their

SUBMITTER: Abubakar A 

PROVIDER: S-EPMC8292705 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature