All of the following are true about histogram analysis errors, except that
a. histogram analysis errors result in erroneous exposure indicator numbers.
b. histogram analysis errors may occur as a result of poor central ray centering.
c. fog values outside the exposure field, but included in the VOI, do not cause widening of the histogram.
d. selecting the wrong body part or projection in the workstation menu will cause a histogram analysis error.
C
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Paradoxical movement indicates a:
A) flail chest. B) pneumothorax. C) cardiac tamponade. D) hemothorax.
Is sometimes injected into the patient’s vein before a stress test for better understanding of blood flow to the myocardium.
a. Thallium
b. Iodine
c. Talcum
d. Air
Which of the following is an excessive immune response that involves IgE antibodies?
A. Allergy B. Mononucleosis C. Anaphylaxis D. Lymphedema E. Chronic fatigue syndrome
For radiation exposure, kilovotage (kV) can be best described as
It determines the amount of radiation exposure received. It controls the total time rays flow from the x-ray tube. It determines the quality of penetrating power of the central beam. It determines the amount of amperes that the tubehead releases.