Evaluation of Delta^4DVH Anatomy in 3D Patient-Specific IMRT Quality Assurance.

ABSTRACT:

Purpose

To evaluate the performance of Delta^4DVH Anatomy in patient-specific intensity-modulated radiotherapy quality assurance.

Materials and methods

Dose comparisons were performed between Anatomy doses calculated with treatment plan dose measured modification and pencil beam algorithms, treatment planning system doses, film doses, and ion chamber measured doses in homogeneous and inhomogeneous geometries. The sensitivity of Anatomy doses to machine errors and output calibration errors was also investigated.

Results

For a Volumetric Modulated Arc Therapy (VMAT) plan evaluated on the Delta⁴ geometry, the conventional gamma passing rate was 99.6%. For a water-equivalent slab geometry, good agreements were found between dose profiles in film, trea

SUBMITTER: Tang D 

PROVIDER: S-EPMC7388137 | biostudies-literature | 2020 Jan-Dec

REPOSITORIES: biostudies-literature