APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -The pelvic outlet also called the inferior pelvic aperture, defines the lower margin of the lesser (true) pelvis. The pelvic cavity (the true pelvis) predominantly contains the urinary bladder, the colon, and the internal reproductive organs. This space is enclosed between the pelvic inlet and the pelvic outlet.

Detailed explanation-2: -The true pelvis, or lesser pelvis, lies below the pelvic brim (Figure 1). This landmark begins at the level of the sacral promontory posteriorly and the pubic symphysis anteriorly. The space below contains the bladder, rectum, and part of the descending colon.

Detailed explanation-3: -The false pelvis is related to the abdominal cavity anteriorly and superiorly and contains most of the small bowel, parts of the colon, and the common iliac vessels. The true pelvis contains some small bowel, the rectum, the urinary bladder, and the reproductive organs.