Which of the following determines the exposure factors for extraoral techniques?
a. Intensifying screen-film combination
b. The patient's size and tissue density
c. Target-film distance
d. All of the above
d. The exposure factors for extraoral techniques vary considerably. The settings depend largely on the intensifying screen-film combination, which plays a similar role to intraoral film speed in determining appropriate exposure settings and the use of digital extraoral radiographic equipment. The patient's size and tissue density and the target-image receptor distance also must be considered.
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