Which of the following affects the quality of the x-ray beam?
mAs
screen speed
collimation
kVp
kVp
Rationale: Kilovoltage affects the quality of the beam as the wavelengths of the energies are emitted.
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Total lung capacity and functional residual capacity will ________ in chronic obstructive pulmonary disease (COPD)
a. first decrease and then increase b. not change c. decrease d. increase
Which of the following is a direct-acting skeletal muscle relaxant?
A) Lioresal® B) Dantrium® C) Soma® D) Parafon Forte DSC®
Into what structure does the distal convoluted tubule empty?
a. ureter c. decsending limb of loop pf Henle b. ascending limb of loop of Henle d. collecting duct
Secondary barriers are intended to intercept
a. scatter radiation from the patient. b. leakage radiation from the x-ray tube. c. primary beam that exits the patient. d. both a and b