title: Perineal scanning.
abstract: Although various techniques have been described to aid in the ultrasound diagnosis of placenta previa and incompetent cervix, these maneuvers depend on the precise identification of the internal cervical os, a feat which is notoriously difficult to accomplish consistently. In an attempt to get a closer view of the cervix we tried another approach. This simple technique of perineal scanning has the potential to help considerably with these problems.
mesh_terms: D002584:Cervix Uteri / Q000033:anatomy & histology; D005260:Female; D006801:Humans; D010502:Perineum; D010920:Placenta / Q000473:pathology; D010923:Placenta Previa / Q000175:diagnosis; D011247:Pregnancy; D011630:Pubic Bone / Q000033:anatomy & histology; D014463:Ultrasonography / Q000379:methods*; D014521:Urethra / Q000033:anatomy & histology; D001743:Urinary Bladder / Q000033:anatomy & histology; D002581:Uterine Cervical Incompetence / Q000175:diagnosis*; D014599:Uterus / Q000033:anatomy & histology; D014621:Vagina / Q000033:anatomy & histology