Dosimetric impact of placement errors in optically stimulated luminescent in vivo dosimetry in radiotherapy.

ABSTRACT:

Introduction

Studies have suggested that optically stimulated luminescent dosimeters (OSLDs) can be used for in vivo dosimetry of intensity-modulated radiation therapy (IMRT) and volumetric-modulated arc therapy (VMAT). Clinical uncertainties such as placement error have not been thoroughly investigated. The purpose of this work was to measure OSLD placement error in a clinical sample and analyze its dosimetric impact.

Methods and materials

The analysis consisted of three parts: first, quantification of placement error in a clinical sample of 128 patients yielding 293 cone-beam CT (CBCT) with visible OSLDs registered to the treatment plan; Second, correlation of placement error and clinical OSLD measurements; third, simulation of dosimeter placement in the treatment p

SUBMITTER: Tariq M 

PROVIDER: S-EPMC7807655 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature