WELL IDENTIFIED ANSWERS [ALREADY
GRADED A+} REAL EXAM!!
An increase in red blood cell velocity will_____ the Doppler Shift:
a. increase
b. decrease
c. not change
d. cannot be predicted - ANS✔✔---a. increase
The primary advantage of CW Doppler is:
a. range resolution
, b. range discrimination
c. range ambiguity
d. range gating
e. absence of sampling rate - ANS✔✔---e. absence of sampling rate
The range for ultrasound begins:
a. 20 Hz
b. 20,000 Hz
c. 2 MHz
d. 15 MHz - ANS✔✔---b. 20,000 Hz (useful frequency range for clinical imaging is
2MHz-10MHz)
Which instrument control affects the amplitude (dB) of the outgoing signal:
a. gain
b. receiver gain
c. TGC
d. transmit gain
e. overall gain - ANS✔✔---d. transmit gain; amplitude can be affected by the
sonographer
Which gain will increase the risk of bioeffects?
a. transmit
b. receive
c. gain
d. overall gain - ANS✔✔---a. transmit
Which of the following is considered the memory of an ultrasound instrument?