Purpose: The purpose of this study was to investigate the relationship between inter-reader variability in manual prostate contour segmentation on magnetic resonance imaging (MRI) examinations and determine the optimal number of readers required to establish a reliable reference standard.
Materials And Methods: Seven radiologists with various experiences independently performed manual segmentation of the prostate contour (whole-gland [WG] and transition zone [TZ]) on 40 prostate MRI examinations obtained in 40 patients. Inter-reader variability in prostate contour delineations was estimated using standard metrics (Dice similarity coefficient [DSC], Hausdorff distance and volume-based metrics).
Background: The incremental value of dynamic contrast-enhanced (DCE) imaging in localizing radiorecurrent prostate cancer is uncertain.
Purpose: To assess the added-value of DCE imaging to the combination T -weighted imaging (T W)+diffusion-weighted imaging (DWI) in detecting locally radiorecurrent prostate cancer (PCa), by radiologists with different levels of experience.
Study Type: Analytic retrospective study.