Conformance of a 3T radiotherapy MRI scanner to the QIBA Diffusion Profile.

ABSTRACT:

Purpose

To assess the technical performance of the apparent diffusion coefficient (ADC) on a dedicated 3T radiotherapy scanner, using a standardized phantom and sequences. Investigations into factors that could impact the technical performance of ADC in the clinic were also completed, including changing the slice-encoded imaging direction and the reference sample ADC value.

Methods

ADC acquisitions were performed monthly on an isotropic diffusion phantom over 1 year. Measurements of ADC %bias, coefficients of variation for short-/long-term repeatability and precision (CV_ST /CV_LT and CV_P ), and b-value dependency (Dep_b ) were calculated. The measurements were then assessed according to the Quantitative Imaging Biomarker Alliance (QI

SUBMITTER: Carr ME 

PROVIDER: S-EPMC9543906 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature