As noise increases in a CT image,
a. low contrast resolution increases.
b. dose to the patient increases.
c. low contrast resolution decreases.
d. both a and c
d. both a and c
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How did greenstick fractures get their name?
a. Because they occur mainly in children b. Because the broken bone has a greenish appearance c. Because the unbroken side of the bone shaft is bent like a plant stick d. Because they heal rapidly
Which of the following statements is true concerning the antiasphyxia valve of the Uni-Vent 750?
a. The valve opens with a –1 cm H2O pres-sure. b. The valve opens in the synchronized in-termittent mandatory ventilation mode for spontaneous breathing. c. The valve can open in the control mode for spontaneous breathing. d. The valve functions as the ventilator's demand valve for breath triggering.