The "Lumbar-Tingling" quiz

Front

Why are the hips and knees flexed for an AP lumbar spine projection?

a) To increase the lordotic curve

b) To reduce patient discomfort

c) To reduce the lordotic curve

d) To get a better view of the sacroiliac joints

Back

Correct answer:

c) To reduce the lordotic curve

Front

What are two key evaluation criteria for a successful AP Lumbar Spine projection?

a) T12 to L5 are included, and no rotation

b) T12 to S1 are included, and no rotation

c) T10 to S1 are included, and the intervertebral foramina are open d) The intervertebral disk spaces are open, and there is no rotation

Back

Correct answer:

b) T12 to S1 are included, and no rotation

Front

Where is the CR centered for a routine AP lumbar spine projection? a) At the level of the iliac crest (L4-5)

b) At the level of the ASIS (S1-2)

c) At the level of 1 ½ inches above the iliac crest (L3)

d) At the xiphoid tip

Back

Correct answer:

c) At the level of 1 ½ inches above the iliac crest (L3)

Front

Why is a lead mat or other scatter reduction material recommended for a lateral lumbar spine projection?

a) To absorb primary radiation

b) To increase patient dose

c) To reduce patient motion

d) To absorb scatter radiation

Back

Correct answer:

d) To absorb scatter radiation

Front

Which two structures should be demonstrated for a true lateral Lumbar Spine image? a) The zygapophyseal joints and spinous processes

b) The intervertebral disk spaces and pedicles

c) The intervertebral disk spaces and intervertebral foramina

d) The transverse processes and sacroiliac joints

Back

Correct answer:

c) The intervertebral disk spaces and intervertebral foramina

Front

What is the general CR angle for a lateral lumbar spine projection if no support is used under the patient's waist?

a) 5° to 8° cephalad

b) Perpendicular

c) 5° to 8° caudad

d) 15° cephalad

Back

Correct answer:

c) 5° to 8° caudad

Front

What is the standard body rotation for an oblique projection of the lumbar region?

a) 45° from supine

b) 45° from prone

c) 60° from supine

d) 60° from prone

Back

Correct answer:

a) 45° from supine

Front

In an oblique lumbar spine projection, where is the CR centered in relation to the elevated ASIS and iliac crest?

a) 2 inches medial to the elevated ASIS and 1 ½ inches above the iliac crest (L3)

b) 2 inches lateral to the elevated ASIS and 1 ½ inches below the iliac crest (L3)

c) 1 inch medial to the elevated ASIS and at the level of the iliac crest (L4-5)

d) 1 inch lateral to the elevated ASIS and at the level of the iliac crest (L4-5)

Back

Correct answer:

a) 2 inches medial to the elevated ASIS and 1 ½ inches above the iliac crest (L3)

Front

What specific joints are visualised for an oblique projection of the lumbar region?

a) sacroiliac joints

b) zygapophyseal joints

c) Intervetebral disc

d) costovertebral

Back

Correct answer:

b) zygapophyseal joints

Front

How do you evaluate an oblique lumbar spine projection to determine if the positioning is correct?

a) The intervertebral foramina are open

b) The spinous processes are aligned with the center of the vertebral body

c) The zygapophyseal joints are visualized and the pedicle is near the center of the vertebral body

d) The sacrum is centered to the collimation field

Back

Correct answer:

c) The zygapophyseal joints are visualized and the pedicle is near the center of the vertebral body