RAD 245- AP Axial Sacrum- Chapter 9- Module 3

Question 1

How is the CR angled for the AP Axial Sacrum?

Answer 1

CR 15 degrees cephalad (UP)

Question 2

Where is the CR centered?

Answer 2

CR at MSP at the level of 2 inches Superior to the Public Symphysis

Question 3

What is the positioning error when the sacrum shifts toward the side positioned farther from the table and IR, and the pelvic brim and symphysis pubis shift toward the side positioned closer to the table and IR?

Answer 3

If the patient was rotated AWAY from the AP projection

Question 4

What is the positioning error when the left ischial spine is demonstrated without pelvic brim superimposition, and the median sacral crest and coccyx are not aligned with the pubic symphysis but are rotated toward the right side?

Answer 4

Patient was rotated into an LPO position

Question 5

What is the positioning error when the right ischial spine is demonstrated without pelvic superimposition, and the median sacral crest and coccyx are rotated toward the left side?

Answer 5

Patient was rotated into an RPO position

Question 6

What type of curvature does the lumbar spine have when the patient is supine and the legs are extended?

Answer 6

Lordotic curvature

Question 7

What type of curvature does the sacrum have when the patient is supine and the legs are extended?

Answer 7

Kyphotic curvature

Question 8

What is the error when the 1st, 2nd, and 3rd sacral segments are foreshortened?

Answer 8

Insufficient CR angulation

Question 9

What is the error when the sacrum is elongated and the symphysis pubis will superimpose the inferior sacral segments?

Answer 9

Excessive CR angulation