[Ultrasonics].
D004301:Doppler Effect; D006801:Humans; D055585:Physical Phenomena; D010825:Physics; D011312:Pressure; D011791:Quartz; D014464:Ultrasonic Therapy / Q000379:methods; D014465:Ultrasonics; D014463:Ultrasonography
D011791:Quartz
Les ultra-sons.