Author Question: AEC systems are designed to ensure: proper penetration back up timer isn't reached extended ... (Read 21 times)

nevelica · **on:** Jul 17, 2018

AEC systems are designed to ensure:

proper penetration
back up timer isn't reached
extended exposure time
proper density

Question 2

A patient is lying on his right lateral surface and is facing the x-ray tube. What is the projection of the part?

AP
right lateral decubitus
left lateral decubitus
PA

Mochi · **Reply #1 on:** Jul 17, 2018

Answer to Question 1

proper density

Rationale: AEC is designed to ensure proper density for a part is achieved. kVp is selected along with the cell according to part coverage is selected. The exposure is terminated when optimal density is reached.

Answer to Question 2

AP

Rationale: A patient lying on his right side with a horizontal beam describes a right lateral decubitus position. Projection describes how the beam passes through the part. If the patient is facing the tube, the projection would pass through the part AP.