Emergency Medicine Reports – October 30, 2005
October 30, 2005
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Emergency Ultrasound: Basic Trauma Training
Ultrasound utilizes frequencies well above the range of human hearing to penetrate and visualize structures in the body. While human hearing is generally in the range of 20-20,000 Hz (cycles/second), diagnostic ultrasound is typically in the range of 2-12 mega-hertz (MHz), or 2-12 million cycles per second.