Comparison of prostate delineation on multimodality imaging for MR-guided radiotherapy.

ABSTRACT:

Objective:

With increasing incorporation of MRI in radiotherapy, we investigate two MRI sequences for prostate delineation in radiographer-led image guidance.

Methods:

Five therapeutic radiographers contoured the prostate individually on CT, T₂ weighted (T₂W) and T₂* weighted (T₂*W) imaging for 10 patients. Contours were analysed with Monaco ADMIRE (research v. 2.0) to assess interobserver variability and accuracy by comparison with a gold standard clinician contour. Observers recorded time taken for contouring and scored image quality and confidence in contouring.

Results:

There is good agreement when comparing radiographer contours to the gold-standard for all three imaging types with Dice similarity co-efficient 0.91-0.94

SUBMITTER: Pathmanathan AU 

PROVIDER: S-EPMC6540870 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature