ARDMS SPI STUDY GUIDE |Q & A |ALREADY GRADED A+ |2024 UPDATE

In soft tissue, if the frequency of a wave is increased the Propagation Speed (PS) will... correct answerRemain the Same because stiffness and density affect Propagation Speed. What is the audible range? correct answer20-20,000Hz 20,000Hz=Ultrasound Frequency is measured in correct answerHertz (Hz) is Cycles per Second Not affected by sonographer Increase Frequency; Decrease Depth A period is the length of time it takes for correct answerone complete wavelength to pass a fixed point PRP is determined by correct answerTransmit time and receive time. Period is measured in correct answerTime (μs) When the sonographer changes the imaging depth what parameters are changed? correct answerPRP, PRF, Duty Factor What is duty factor? correct answerThe percentage or fraction of time that the system is transmitting a pulse (Time Sound is ON or ON-Time). Propagation Speed in SOFT TISSUE correct answer1.54 mm/μs (1540 m/sec) Unit of measurement for Pulse Duration, Duty Factor, PRP, and Period correct answerTime, (μs) Pulse duration is deter