Device for both vaginal and abdominal ultrasonography.
Vaginal ultrasonography is medical ultrasonography by applying an ultrasound transducer (or "probe") in the vagina to visualize organs within the pelvic cavity. It is also called transvaginal ultrasonography, because the ultrasound waves go across the vaginal wall to study tissues beyond it.
^Kirk, E.; Bottomley, C.; Bourne, T. (2013). "Diagnosing ectopic pregnancy and current concepts in the management of pregnancy of unknown location". Human Reproduction Update20 (2): 250. doi:10.1093/humupd/dmt047.edit