To monitor blood flow through major arteries, ultrasonic waves of which frequencies are employed?
A. 5 to 10 Hz
B. 5 to 10 MHz
C. 15 – to 100 MHz
D. None of these
Answer:A
To monitor blood flow through major arteries, ultrasonic waves of which frequencies are employed?
A. 5 to 10 Hz B. 5 to 10 MHz C. 15 – to 100 MHz D. None of these