How far should the IR or collimated field extend beyond the ankle or knee joint for an AP projection of the leg?
A) $1 / 2$ to 1 inch
B) 1 to 2 inches
C) 1 to 1 $1 / 2$ inches
D) 2 to 2 $1 / 2$ inches

Question

Quizplus · Accepted Answer

The IR or collimated field should extend 1 to 1 1/2 inches beyond the joint being imaged to allow for proper visualization of the entire bone. A larger field of view may lead to increased scatter radiation and decreased image quality.

How Far Should the IR or Collimated Field Extend Beyond 1/21 / 21/2

How Far Should the IR or Collimated Field Extend Beyond $1 / 2$