The predominant type of interaction that takes place between the x-ray photon and the high-atomic-number phosphor of the intensifying screen is
a. photoelectric.
b. Compton.
c. pair production.
d. Bremsstrahlung.
a. photoelectric.
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An HIV test result that means the antibody was neither positive nor negative is known as:
a. unknown. b. an aberration. c. inconclusive. d. considered to be positive.
Angina pectoris occurs when:
A. a coronary artery is totally occluded by plaque. B. myocardial oxygen demand exceeds the supply. C. one or more coronary arteries suddenly spasm. D. myocardial oxygen supply exceeds the demand.
Match the following terms with the correct definition.
A. working group B. sporting group C. toy group D. nonsporting group E. hound group F. hybrid or designer G. terrier group H. herding group
Patients with artificial heart valves placed more than two years ago do not require antibiotic premedication
A) True B) False