Each of the following results in reduced image sharpness except one. Which one is the exception?
A) Patient movement during exposure
B) Image receptor positioned close to the teeth
C) A short PID
D) The use of intensifying screens
B
Explanation: A) Positioning the image receptor close to the teeth satisfies the shadow-casting principle for increasing image sharpness that states a short object-image receptor distance reduces penumbra and magnification.
B) Positioning the image receptor close to the teeth satisfies the shadow-casting principle for increasing image sharpness that states a short object-image receptor distance reduces penumbra and magnification.
C) Positioning the image receptor close to the teeth satisfies the shadow-casting principle for increasing image sharpness that states a short object-image receptor distance reduces penumbra and magnification.
D) Positioning the image receptor close to the teeth satisfies the shadow-casting principle for increasing image sharpness that states a short object-image receptor distance reduces penumbra and magnification.
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