Diagnostic Ultrasound - Abdomen and Pelvis

Vagina
Urinary bladder
TRANSVERSE US OF VAGINA
Anatomy: Pelvis
Vagina
Urethra
Anal canal
Levator ani muscles
Urinary bladder
Urethra
Vagina
Rectum
Levator ani muscles
Urinary bladder
Ureteric orifices
Obturator internus muscle
Vagina
Rectal gas with shadowing
Iliococcygeus muscles
(Top) Transverse transabdominal ultrasound shows the mid to lower vagina at the level of anal canal. For transabdominal US of the
vagina, caudal angulation of the US probe is needed on both longitudinal and transverse scans. Note that the vaginal canal is better
demonstrated on transabdominal US because the angle of insonation is more favorable, approaching a right angle. (Middle) Transverse
transabdominal ultrasound of the mid vagina shows the levator ani muscles adjacent to the posterolateral aspect of vagina. (Bottom)
Upper vagina is shown at the level of the ureteric orifices. The ureters run lateral to the lateral fornices of the vagina, cross anteriorly,
and then enter into the posterior wall of the bladder. This is a useful plane for investigation of the ureteric jets.
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