A Doppler venous waveform demonstrates
A. a) Triphasic waveform.
B. b) Biphasic waveform.
C. c) Monophasic waveform.
查看答案
Patient preparation for an abdominal ultrasound is to
A. a) Eat a fatty meal.
B. b) Have a distended urinary bladder.
C. c) Fast for at least 6 hours.
Acoustic ultrasound gel is applied to the skin to
A. a) Allow good transmission of sound waves into the body.
B. b) Lubricate the skin.
C. c) Increase the amount of ultrasound scatter.
Focal zones are used to
A. a) Diverge the ultrasound beam.
B. b) Scatter the ultrasound beam.
C. c) Narrow the ultrasound beam.
Primary shapes of transducers are
A. a) Round and square.
B. b) Linear and curved.
C. c) Oblong and trapezoid.
微信支付 
支付宝支付