Figure 3a. (a) Midvaginal coronal T2-weighted fast spin-echo (repetition time msec/echo time msec, 2,826/120) MR image obtained with an endovaginal coil and (b) corresponding drawing in a 23-year-old asymptomatic female volunteer demonstrate the vaginal wall (VW), urogenital diaphragm (UG), puborectal muscle (PR), bulbocavernous muscle (BC), levator ani muscle (LA), internal obturator muscle (IOM), arcus tendineus levator ani (ATLA), bladder (B), and uterus (UT).