DXA Module 10

Question 1

On a typical PA lumbar spine DXA scan, which lumbar vertebra is likely to have transverse processes resembling wings?

Answer 1

L5

Question 2

Why is the lumbar spine a primary DXA site?

Answer 2

because lumbar vertebrae typically reflect the highest vertebral bone density

Question 3

For obese patients, the umbilicus can be used as an approximate landmark for locating the _____

Answer 3

iliac crest

Question 4

What should is the next step for the tech after placing the positioning block for a lumbar spine?

Answer 4

use the laser light and table controls to center the patient

Question 5

At what level should the lumbar spine DXA be stopped?

Answer 5

after the T12 ribs appear

Question 6

Which vertebrae should be included in a typical lumbar spine DXA analysis?

Answer 6

L1 - L4

Question 7

____ shows which parts of the scan were calculated as bone and which were soft tissue

Answer 7

the bone map

Question 8

The T-score measurement of the lumbar spine compares the patient’s total BMD value to ____

Answer 8

a young adult reference population of the same gender

Question 9

Is it necessary to reposition the patient if the shoulders are not square with the pelvis during a lumbar spine DXA?

Answer 9

yes