What form of nuclear imaging emits positrons, causing gamma rays to be discharged?
a. MRI
b. PET
c. Ultrasound
d. Fluoroscopy
ANS: B
Positron emission tomography (PET) is a form of nuclear imaging that combines elements of CT scanning and nuclear scanning to create a picture that represents the brain or other organs. The radioisotopes used emit positrons that cause pairs of gamma rays to be discharged and converted into images.
Health Professions
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Indicate whether the statement is true or false
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What is the ideal target-image receptor distance used with the paralleling technique?
A) 8 inches (20.5 cm) B) 12 inches (30 cm) C) 16 inches (41 cm)
Health Professions