Beam attenuation is defined as:
scatter production
strengthening of the beam as it passes through tissues
the effects of absorption qualities upon tissues and radiographic appearances
the path of the x-ray beam
the effects of absorption qualities upon tissues and radiographic appearances
Rationale: Tissues of different atomic numbers will either absorb the beam or allow the beam to pass easily through. Tissues with high atomic number such as bone will absorb most of the beam, resulting in white image components. Tissues easily penetrated will appear darker.
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Towels are a counted item and are generally used in the surgical incision to control bleeding
Indicate whether the statement is true or false.
What is the mechanism behind nitric oxide (INOmax)?
a. It dilates pulmonary arterial vascular beds and affects platelet aggregation. b. It inhibits the degranulation of mast cells. c. It inhibits the 5-lipoxygenase enzyme that catalyzes the formation of leukotrienes from arachidonic acid. d. It relaxes vascular smooth muscle by binding to the heme group of cystolic guanylate, activating guanylate cyclase, increasing cyclic GMP.