Shixposs
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ARDMS SPI STUDY GUIDE complete and Graded A+
ARDMS SPI STUDY GUIDE complete and Graded A+ 
 
 
 
In soft tissue, if the frequency of a wave is increased the Propagation Speed (PS) will...	Remain the Same because stiffness and density affect Propagation Speed. 
What is the audible range?	20-20,000Hz 
 
>20,000Hz=Ultrasound 
Frequency is measured in	Hertz (Hz) 
is 
Cycles per Second 
 
Not affected by sonographer 
 
Increase Frequency; Decrease Depth 
A period is the length of time it takes for	one complete wavelength to pass a fixed po...
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SPI PRACTICE QUESTIONS complete and graded A+
SPI PRACTICE QUESTIONS complete and graded A+ 
 
 
Sound waves are: - longitudinal, mechanical 
The speed of sound in soft tissue is closest to: - 1,500 m/s 
The frequency closest to the lower limit of ultrasound is: - 15,000 Hz 
Which is not an acoustic variable? - intensity 
The effects of soft tissue on ultrasound are called: - acoustic propagation properties 
All of the following are true EXCEPT: - two waves with identical frequencies must interfere constructively 
Put in decreas...
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chn cognition • Por  shixposs