Slice Encoding for Metal Artefact Correction in magnetic resonance imaging examinations for radiotherapy planning.

ABSTRACT:

Background and purpose

Magnetic resonance (MR) and computed tomography (CT) images are degraded in the presence of metallic implants. We investigate whether SEMAC (Slice Encoding for Metal Artifact Correction) MR is advantageous for radiotherapy (RT) planning.

Methods

Conventional and SEMAC MR protocols were compared (1.5T). A spine fixation device suspended in gelatine, two patients with spine fixation devices and six patients with bilateral hip replacements were scanned with both conventional and SEMAC protocols. In spine patients the visibility of the spinal canal and spinal cord was assessed; in prostate patients, the visibility of the prostate, pelvic structures and the pelvic girdle.

Results

The signal loss volume surrounding the spine fixation device was reduce

SUBMITTER: Schmidt MA 

PROVIDER: S-EPMC5013753 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature