Ultrasound uses ionizing radioactive wavelengths to generate a sonographic image?
A. True
B. False - Answers B
Which one of these is not a use for ultrasound in medicine?
a. Examination of a gallstone
b. Prenatal scan on a pregnant woman
c. Detecting blockage in a vessel
d. Stopping excessive bleeding during a surgical procedure. - Answers D
Which piece of equipment is necessary to carry out an ultrasound procedure?
a. Camera
b. Transducer
c. PAC system
d. Thermal scanner - Answers B
When doing a scan, the ultrasound probe needs to have a special jelly between it and the skin. The
reason for this is:
a. The jelly is needed to lubricate the movement of the probes as it passes over the skin.
b. Ultrasound waves are reflected strongly as they hit a material-air boundary
c. The jelly acts like a lens, focusing the waves
d. To protect the skin from the harmful effects of ultrasound - Answers B
Ultrasound is used for all of the following except:
, a. Brain lesions
b. Kidney biopsy
c. Aortic heart rates
d. Fractured pelvis - Answers D
T or F SONAR stands for Sound navigation and ranging. - Answers T
Diagnostic ultrasound uses the frequencies of:
a. 10-15 kHz
b. 1-20 kHz
c. 100-1000 Hz
d. 1-20 MHz - Answers D
T or F Objects moving toward the transducer reflect sound at a higher frequency; objects moving
away reflect sound at a lower frequency. - Answers T
Receiver gain allows the sonographer to do what to the echo signals?
a. Decrease them
b. Amplify them
c. Receiver gain doesn't change the signals
d. None of the above - Answers B
Time gain can increase the receiver gain at specific depths.
a. True
b. False - Answers A
Being a sonographer requires you to work very closely with your patients.