Diagnostic Ultrasound - Abdomen and Pelvis

Vagina
Anatomy: Pelvis
VAGINAL IMAGING BY VARIOUS TECHNIQUES
Urinary bladder
Urethra
Muscular walls of vagina
Mucosal layer of vagina
Cervix
Rectum
Muscular walls of vagina
Cervix, external os
Vaginal canal
Urinary bladder
Cervix
Urethra
Urinary bladder
Distal vagina
Anal canal
Rectovaginal fascia
Vaginal wall
(Top) Transabdominal midline sagittal ultrasound of the vagina shows characteristic triple-line echoes, i.e., hypoechoic muscular walls
interfaced by echogenic mucosa. When looking for the vagina using transabdominal US, it is best to view with a distended bladder,
starting at midline near the cervical level and tilting the transducer further caudally. (Middle) Longitudinal transvaginal ultrasound of
the vagina again shows characteristic triple-line echo pattern. Using transvaginal US, gradually withdraw the high-frequency vaginal
transducer so as to outline the vaginal canal. (Bottom) Transperineal sagittal ultrasound shows the vagina sandwiched between the
urethra anteriorly and the rectum posteriorly. Note that the vaginal canal is barely visible in the absence of intraluminal acoustic jelly
or fluid.
158