Fig. 1.

Solid model superimposed on an extended field of view ultrasound image of the uterus and cervix

Six ultrasound volumes were manually registered to create a single, extended volume image of the entire uterus and cervix (top). Extended volume images were used to guide development of solid models that captured the shape of the uterus and cervix (middle). Note that only the cervix and uterus were seen with ultrasound images. The pelvic support anatomy (endopelvic fascia, cardinal ligament, uterosacral ligament) were not seen with ultrasound. Previous experience with pelvic MRI and knowledge of anatomic relationships were used to contruct pelvic support anatomy. In one subject, MRI and ultrasound was performed on the same day showing correlation between the two imaging modalities (bottom)