Final answer:
Projection in medical imaging refers to the path of the x-ray beam, which plays a role in the resulting image and what structures can be seen.
Step-by-step explanation:
The term projection in medical imaging refers to the path of the x-ray beam. When an x-ray is taken, the beam is directed at the body from a specific angle to capture an image. The angle at which the x-ray beam is projected plays a role in the resulting image and what structures can be seen. Different projections can be used to obtain different views of the body.