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 of the following would be an example of physical evidence?

A. Noise B. Lighting C. Odor or smell D. Fire patterns

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Irrigation solutions are maintained at body temperature to prevent ________

A. hypothermia B. sickness

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How many new cases of HIV infection were reported in the United States for the year 2009?

A. at least 225,000 B. 10,550 C. just over 36,000 D. about 100,000

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The "See" notes in the Tabular instruct coders to view additional sections of the Tabular.

Answer the following statement true (T) or false (F)

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