Ultrasonography, Prenatal

Diagnosis, Prenatal Ultrasonic; Diagnosis, Ultrasonic Prenatal; Prenatal Ultrasonic Diagnosis; Prenatal Ultrasonography; Ultrasonic Diagnosis, Prenatal; Ultrasonic Prenatal Diagnosis; Diagnoses, Prenatal Ultrasonic; Diagnoses, Ultrasonic Prenatal
The visualization of tissues during pregnancy through recording of the echoes of ultrasonic waves directed into the body. The procedure may be applied with reference to the mother or the fetus and with reference to organs or the detection of maternal or fetal disease.