Evaluation of a metal artifact reduction algorithm in CT studies used for proton radiotherapy treatment planning.

ABSTRACT: Metal objects in the body such as hip prostheses cause artifacts in CT images. When CT images degraded by artifacts are used for treatment planning of radiotherapy, the artifacts can yield inaccurate dose calculations and, for particle beams, erroneous penetration depths. A metal artifact reduction software (O-MAR) installed on a Philips Brilliance Big Bore CT has been tested for applications in treatment planning of proton radiotherapy. Hip prostheses mounted in a water phantom were used as test objects. Images without metal objects were acquired and used as reference data for the analysis of artifact-affected regions outside of the metal objects in both the O-MAR corrected and the uncorrected images. Water equivalent thicknesses (WET) based on proton stopping power data were calculated t

SUBMITTER: Andersson KM 

PROVIDER: S-EPMC5711074 | biostudies-literature | 2014 Sep

REPOSITORIES: biostudies-literature