An additional tilted-scan-based CT metal-artifact-reduction method for radiation therapy planning.

ABSTRACT:

Purpose

As computed tomography (CT) imaging is the most commonly used modality for treatment planning in radiation therapy, metal artifacts in the planning CT images may complicate the target delineation and reduce the dose calculation accuracy. Although current CT scanners do provide certain correction steps, it is a common understanding that there is not a universal solution yet to the metal artifact reduction (MAR) in general. Particularly noting the importance of MAR for radiation treatment planning, we propose a novel MAR method in this work that recruits an additional tilted CT scan and synthesizes nearly metal-artifact-free CT images.

Methods

The proposed method is based on the facts that the most pronounced metal artifacts in CT images show up along the x-ray beam di

SUBMITTER: Kim C 

PROVIDER: S-EPMC6333137 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature