Sacrum, Coccyx & SI Joints.

Sacrum, Coccyx & SI Joints
Which part of the sacrum is considered to be the most posterior on a lateral
sacrum - CORRECT ANSWER-Median sacral crest

What is the term for the superior aspect of the coccyx - CORRECT
ANSWER-Base

Which topographic landmarks corresponds with the second sacral segment -
CORRECT ANSWER-ASIS

What should be done to reduce scatter radiation from reaching the image
receptor for the lateral lumbar, sacrum, and coccyx projections - CORRECT
ANSWER-Place lead mat on the tabletop behind the patient

An average of _____ segment(s) make up the adult coccyx - CORRECT
ANSWER-4

Where is the CR centered for an AP axial projection of the sacrum - CORRECT
ANSWER-2 inches superior to the symphysis pubis

What CR angle should be used for a lateral sacrum/coccyx projection? -
CORRECT ANSWER-None. The CR is perpendicular to the IR

On each side of the sacral base is a large wing-like mass called the - CORRECT
ANSWER-Ala

The angle of the articulation between the sacrum and the ilia (the sacroiliac joint)
is - CORRECT ANSWER-25-30 degrees

The CR angle for an AP axial projection of the sacrum is: - CORRECT
ANSWER-15 degrees cephalic

The CR angle for an AP axial projection of the coccyx is - CORRECT
ANSWER-10 degrees caudad