How Can a Lead Apron Artifact Be Avoided During Exposure

Multiple Choice

How can a lead apron artifact be avoided during exposure of panoramic images?

A) Use a lead apron without a thyroid collar.
B) Place the lead apron high around the neck of the patient so that it does not block the x-ray beam.
C) Place the lead apron low around the neck of the patient so that it does not block the x-ray beam.
D) Both a and c are correct.