A PA oblique large intestine projection (RAO position) with accurate positioning demonstrates
1)the rectosigmoid segments without superimposition.
2)a narrowed right iliac ala.
3)the entire large intestine.
4)decreased superimposition (when compared with a PA projection) of the right colic flexure limbs.
A) 2 and 3 only
B) 1 and 4 only
C) 1, 2, and 3 only
D) 1, 2, 3, and 4

Question

Quizplus · Accepted Answer

The RAO position in a PA oblique large intestine projection is designed to open up the right colic flexure and demonstrate the entire large intestine, including the rectosigmoid segments, with minimal superimposition. It also results in a narrowed appearance of the right iliac ala due to the oblique positioning.

A PA Oblique Large Intestine Projection (RAO Position) with Accurate