How does iodine-123 decay?
A. By capturing electrons
B. Conversion by isomeric extraction
C. By alpha decay
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Doppler ultrasound can be used to display
A. Fetal heart beat
B. Rear artifacts
C. Blood flow
The echogenicity of fetal bones can be considered
A. Echoless
B. Low echo
C. Hyperechoic
The intensity of the ultrasonic beam will be reduced by which of the following effects?
Absorption
B. Scattering
C. Reflection
D. All of the above
In a DWI brain image of a stroke patient, ischemic brain tissue will appear to have:
A. ) decreased signal compared to healthy tissue.
B. ) increased signal compared to healthy tissue.
C. ) no difference in signal compared to healthy tissue.
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