RIU 320 Lecture Notes - Lecture 34: Master Of Music, Stopwatch, Microsecond

• School: GVSU
• Department: Radiation and Imaging - Ultrasound
• Course: RIU 320
• Professor: Angela Malone

Document Summary

To create an anatomic image, a sound pulse must travel to a reflector located in the body and return to the transducer. The travel time of this journey allows us to accurately position the reflector. When a reflector is located superficially, the time from pulse creation to reception is brief, whereas trips to and from deeper reflectors require more time. This is the basis for measuring distances in diagnostic imaging. C: the time of flight is directly related to how deep a sound pulse travels. Greater distances prolong the time of flight; lesser distance shortens the time of flight: us systems" computers are programmed with the average speed of sound in soft tissue, 1. 54 mm/us. Iv: note: when one reflector is twice as deep as another reflector, the pulse"s time of flight is twice as long for the deeper reflector. The 13-microsecond rule: always applies when sound travels through soft tissue.