In the view where beams travel from back to front, which view is that?

In the view where beams travel from back to front, which view is that?

• A. AP
• B. RAO
• C. LAO
• D. PA

Answer: (A)

The key idea is how radiographic views are named by the path of the X-ray beam through the body. If the beam travels from the back toward the front, that is a posterior-to-anterior projection, abbreviated PA. The opposite, front-to-back, is anterior-to-posterior, abbreviated AP. The oblique views (RAO and LAO) describe the patient’s rotated position (right or left anterior oblique) rather than a simple front-to-back beam direction. So, a view with beams traveling from the back to the front corresponds to the posterior-anterior (PA) view. The other options either describe the opposite beam direction (AP) or are oblique positions whose names refer to patient orientation rather than a strict back-to-front beam path.

The key idea is how radiographic views are named by the path of the X-ray beam through the body. If the beam travels from the back toward the front, that is a posterior-to-anterior projection, abbreviated PA. The opposite, front-to-back, is anterior-to-posterior, abbreviated AP. The oblique views (RAO and LAO) describe the patient’s rotated position (right or left anterior oblique) rather than a simple front-to-back beam direction.

So, a view with beams traveling from the back to the front corresponds to the posterior-anterior (PA) view. The other options either describe the opposite beam direction (AP) or are oblique positions whose names refer to patient orientation rather than a strict back-to-front beam path.