QUESTIONS AND CORRECT ANSWERS|AGRADE
1. 3cm what is the distance to the
interface if the round trip
time for a sound wave is 39
microseconds?
2. low frequency, low amplitude which signals are eliminated by
the
wall filter in a spectral
Doppler dis-play?
3. two images demonstrating the same at minimum, what is required
pathology from different scan when documenting a
planes pathology discov-ered during
an examination?
4. Increased by 2 times If the diameter of the sound
beam is halved by focusing,
what hap-pens to the
intensity
5. A what is the most common
cause of localized vertical
nonuniformity in a real-time
B-mode image?
A. Improper TGC
B. Defective transducer elements
C. Faulty preamplifier
D.Malfunctioning scan converter
6. C What is this artifact?
A. Shadowing
B. Side lobe
C. Reverberation
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, D.Mirror image
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,7. D How do you fix this
A. Decrease the color scale
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, B. Decrease the color packet size
C. Increase the color packet size
D.Increase the color scale
8. B Which way is the blood flowing?
A. Right to left
B. Left to right
C. Bidirectional
D.Cannot tell
9. which imaging modality can provide
the most accurate measurement of
tu-mor volume?
Color Doppler B-
mode
A-mode M-
mode
10. Which statement is most accurate
re-garding surface rendering three-
di-mensional ultrasound imaging?
Improve accuracy of volume
measure-ment
Minimizes effect of attenuation arti-
facts
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