Of what is a grid used in extraoral radiographic techniques composed?
What will be an ideal response?
A grid is a mechanical device composed of thin strips of lead alternating with a radiolucent material used to absorb scattered radiation. The grid is positioned between the patient and film to absorb scatter radiation to reduce film fog and improve image contrast.
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Which functions of the foot are best achieved by supination at the foot?
a. Provide an accommodative structure at heel strike. b. Assist in attenuating impact during early stance. c. Provide a rigid lever for push-off. d. Absorb transverse plane rotation of the lower limb.
Although bills can be consolidated to show an all-inclusive hospital bill, the insurance company may still require:
a. a separate supply bill. b. separate room charges. c. a separate operating room bill. d. an itemized bill.