EURO-PROBE - Manual segmentations of the prostate and intraprostatic urethra on T2-weighted MRI.

The EURO-PROBE dataset provides manually created segmentations of the prostate and intraprostatic urethra on axial T2-weighted MRI volumes, complementing the existing LUND-PROBE (LUND Prostate Radiotherapy Open Benchmarking and Evaluation) dataset for prostate radiotherapy research. Delineations were performed by delineators with varying levels of experience, including radiologists, radiology and urology residents, and medical students, which enables both inter-reader variability analysis and stratification by reader experience. Across all 467 cases in the LUND-PROBE dataset, at least one paired segmentation of the prostate and intraprostatic urethra was created for each case, yielding 1,227 paired segmentations in total. By expanding the LUND-PROBE dataset, EURO-PROBE supports the development of automated segmentation tools, including for the urethra, which is a highly relevant organ at risk in focal dose escalated prostate radiotherapy.