6X acuros algorithm validation in the presence of inhomogeneities for VMAT treatment planning.

ABSTRACT:

Aim

To validate the Acuros®XB (AXB) dose calculation algorithm for a 6 MV beam from the Varian TrueBeam treatment units.

Background

Currently Anisotropic Analytic Algorithm (AAA) is clinically used on authors' department but AXB could replace it for VMAT treatments in regions where inhomogeneities and free air are present.

Materials and methods

Two steps are followed in the validation process of a new dose calculation algorithm. The first is to check the accuracy of algorithm for a homogenous phantom and regular fields. Multiple fields of increasing complexity have been acquired using a Mapcheck diode array. The accuracy of the algorithm was evaluated using the gamma analysis method. The second is to validate the algorithm in the presence of heterogeneous media. Plana

SUBMITTER: Bassi S 

PROVIDER: S-EPMC7256059 | biostudies-literature | 2020 Jul-Aug

REPOSITORIES: biostudies-literature