Fig. 1

Detection rate for abdominopelvic lymph nodes by size and MRI sequence (a). Small FOV T2, DWI, and T1 post-contrast images identify nearly all PSMA-positive lymph nodes greater than 1 cm. Small FOV T2 is more sensitive than DWI or T1 post-contrast images for lymph nodes less than 1 cm (p < 0.001). Detection rate for prostate bed recurrence by MRI sequence (b). Dynamic contrast-enhanced imaging (DCE) is more sensitive than DWI or single-phase T1 post-contrast images for suspected PSMA-avid prostate bed recurrence (p = 0.002 and p < 0.001, respectively). The difference in sensitivity between DCE and T2 was not statistically significant (p > 0.05)