RAD 245- Image Analysis- Chapter 9 Quiz- Module 3

Question 1

True or False
For an AP lumbar projection, the CR should be directed to the patient’s MSP at the level of the public symphysis for a 14 x 17 inch IR.

Answer 1

False

Question 2

A lateral sacral projection with accurate positioning demonstrates:

1. The long axis of the sacrum aligned with the long axis of the collimated field
2. Superimposition of the greater sciatic notches
3. An opn L5-S1 intervertebral disk space
4. The 3rd Sacral segment in the center of the exposure field

A. 1 and 2 only
B. 1, 2, and 3 only
C. 3 and 4 only
D. 1, 2, 3, and 4

Answer 2

D. 1, 2, 3, and 4

1. The long axis of the sacrum aligned with the long axis of the collimated field
2. Superimposition of the greater sciatic notches
3. An opn L5-S1 intervertebral disk space
4. The 3rd Sacral segment in the center of the exposure field

Question 3

True or False
Rotation may be effectively detected on an AP lumbar projection by evaluating the alignment of the spinous processes in the vertebral body.

Answer 3

True

Question 4

A less than optimal AP axial sacral projection demonstrating sacral foreshortening:

A. Will also demonstrate the symphysis pubis superimposing the 5th sacral segment
B. Was obtained with the patient rotated toward the right side
C. Was obtained with too much cephalic CR angulation
D. Was obtained with an insufficient amount of cephalic CR angulation

Answer 4

D. Was obtained with an insufficient amount of cephalic CR angulation

Question 5

A spot lateral L5-S1 projection with accurate positioning demonstrates:

1. The L5-S1 intervertebral disk space in the center of the collimated field
2. An open L5-S1 intervertebral disk space
3. An obscured intervertebral foramina
4. Near-superimposition of the greater sciatic notches

A. 1 and 2 only
B. 2 and 3 only
C. 1 and 4 only
D. 1, 2, and 4 only

Answer 5

D. 1, 2, and 4 only

1. The L5-S1 intervertebral disk space in the center of the collimated field
2. An open L5-S1 intervertebral disk space
3. Near-superimposition of the greater sciatic notches

Question 6

An AP axial coccygeal projection with accurate positioning demonstrates the:

1. Coccyx aligned with the symphysis publis
2. Longitudinal axis of the coccyx aligned with the longitudinal axis of the IR
3. First through the third coccygeal vertebrae
4. Coccyx without foreshortening

A. 1 and 3 only
B. 2 and 3 only
C. 1, 2, and 4 only
D. 1, 2, 3, and 4

Answer 6

D. 1, 2, 3, and 4

1. Coccyx aligned with the symphysis publis
2. Longitudinal axis of the coccyx aligned
   with the longitudinal axis of the IR
3. First through the third coccygeal vertebrae
4. Coccyx without foreshortening

Question 7

For an AP axial sacral projection with poor positioning demonstrates the symphysis pubis rotated toward the patient’s right side. How was the positioning setup mispositioned for such a projection to be obtained?

A. The CR was angled too cephically
B. The patient was in an RPO position
C. The patient’s legs were extended
D. The patient was in an LPO position

Answer 7

B. The patient was in an RPO position

Question 8

For a lateral sacral projection, the:

1. Patient’s legs are flexed
2. MCP is aligned parallel with the imaging table
3. Posterior ribs are posterior pelvic wings are aligned perpendicular to the imaging table
4. Longitudinal axis of the sacrum is aligned with the short axis of the collimated field

A. 1 and 3 only
B. 2 and 3 only
C. 1, 2, and 3 only
D. 2 and 4 only

Answer 8

A. 1 and 3 only

1. Patient’s legs are flexed
2. Posterior ribs are posterior pelvic wings are aligned perpendicular to the imaging table

Question 9

For an AP axial coccygeal projection, the:

1. CR is angled 10 degrees cephalically
2. ASISs are positioned at equal distances to the imaging table
3. Patient should empty the bladder and colon before the examination
4. CR is centered to the MSP at a level 2 inches (5 cm) superior to the symphysis pubis

A. 1 and 3 only
B. 2 and 4 only
C. 2, 3, and 4 only
D. 1, 2, 3, and 4

Answer 9

C. 2, 3, and 4 only

2. ASISs are positioned at equal distances to the imaging table
3. Patient should empty the bladder and colon before the examination
4. CR is centered to the MSP at a level 2 inches (5 cm) superior to the symphysis pubis

Question 10

For an AP axial sacral projection, the:

1. Patient should empty the bladder and colon before the procedure
2. CR is angled 15 degrees cephalically
3. ASISs are positioned at equal distances to the imaging table
4. Hips and knees are flexed

A. 1 only
B. 2 and 3 only
C. 1, 2, and 3 only
D. 1, 2, 3, and 4

Answer 10

C. 1, 2, and 3 only

1. Patient should empty the bladder and colon before the procedure
2. CR is angled 15 degrees cephalically
3. ASISs are positioned at equal distances to the imaging table

Question 11

True or False

The following image demonstrates proper positioning for an AP lumbar projection.

Image from T12 to the bottom of the sacrum.

Answer 11

True

Question 12

For an AP lumbar projection, the:

1. ASISs are positioned at equal distances from the imaging table
2. Patient’s legs are extended
3. Long axis of the vertebral column is aligned with the short axis of the collimated field
4. CR is centered to the illiac crest when a 14 x 17 inch IR is used

A. 1 and 4 only
B. 2 only
C. 1, 2, and 4 only
D. 1, 2, 3, and 4

Answer 12

A. 1 and 4 only

1. ASISs are positioned at equal distances from the imaging table
2. CR is centered to the illiac crest when a 14 x 17 inch IR is used

Question 13

For an AP oblique lumbar projection (RPO or LPO position) the:

1. Patient’s thorax is rotated until the MCP is at a 45 degree angle with the IR
2. Zygapopyseal joints of interest are positioned closer to the IR
3. CR is centered 2 inches (5 cm) medial to the elevated ASIS at a level of 1.5 inches (4 cm) superior to the illiac crest
4. Long axis of the vertebral column is aligned with the short axis of the collimated field

A. 1 and 3 only
B. 2 and 4 only
C. 1, 2, and 3 only
D. 1, 2, 3, and 4

Answer 13

C. 1, 2, and 3 only

1. Patient’s thorax is rotated until the MCP is at a 45 degree angle with the IR
2. Zygapopyseal joints of interest are positioned closer to the IR
3. CR is centered 2 inches (5 cm) medial to the elevated ASIS at a level of 1.5 inches (4 cm) superior to the illiac crest

Question 14

True or False

Placing a radiolucent sponge between the patient’s lateral body surface and imaging table just superior to the iliac crest will help to align the vertebral column parallel with the imaging table.

Answer 14

True

Question 15

The following AP axial sacral projection was taken with the patient rotated onto:

A. The right side
B. The left side

(Image is of sacrum. Right iliac wing is stacked on itself. The Sacrum is going to the right side. The public symphysis is going towards the left side. Also the left ischial spine is inside the pelvic brim)

Answer 15

B. The left side