Challenge of prostate MRI segmentation on T2-weighted images: inter-observer variability and impact of prostate morphology

Insights into Imaging

Table 1 Demographic and clinical characteristics of study participants (n = 40)

Variable	Value
Age (years)^a	64 [45–76]
PSA (ng/mL)^b	8.4 (± 5.6)
MRI equipment
3 T SIGNA™ Architect, General Electrics	11 (27%)
3 T MAGNETOM™ Skyra, Siemens Healthcare	29 (73%)
Prostate Volume (cm³)^a,c	57.8 [15–199]
PI-RADS
PI-RADS 1–2	23 (57.5%)
PI-RADS 3	4 (10%)
PI-RADS 4	6 (15%)
PI-RADS 5	7 (17.5%)
Tumor location evaluated on MRI
Peripheral zone (PZ)	10 (25%)
Transitional zone (TZ)	7 (17%)

^aMedian [range]
^bMean (± STD)
^cMedian volume was estimated by the median of all the volumes the readers estimated from the MRIs, using an ellipsoid formula