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| Ultrasonography Echography | Echotomography | Echotomography, Computer | Tomography, Ultrasonic | Ultrasonic Diagnosis | Ultrasonic Imaging | Computer Echotomography | Diagnosis, Ultrasonic | Ultrasonic Tomography | Diagnoses, Ultrasonic | Echotomographies The visualization of deep structures of the body by recording the reflections of echoes of pulses of ultrasonic waves directed into the tissues. Use of ultrasound for imaging or diagnostic purposes employs frequencies ranging from 1.6 to 10 megahertz. |