Using density computed tomography images for photon dose calculations in radiation oncology: A patient study.

ABSTRACT:

Background and purpose

Conventional workflows for dose calculations require conversions between Hounsfield Units (HU) and the mass or electron density for Computed Tomography (CT) images in the Treatment Planning System (TPS). These conversions are scanner- and mostly kVp-dependent. A density representation or reconstruction at the CT level can potentially simplify the workflow. This study aimed to investigate the agreement between these two methods for patients and different calculation algorithms.

Materials and methods

Density conversions for conventional HU-density conversions were first established using two phantoms with appropriate inserts. Next, the differences in density and dose calculations between both methods were assessed using 95% Limits of Agreement (LOA) Blan

SUBMITTER: Decoene C 

PROVIDER: S-EPMC10366581 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature