RAD 245- Chapter 10 Quiz- Module 4

Question 1

For a PA Oblique Sternal Projection (RAO position):

1. A 30-inch (76-cm) or 40-inch (100-cm) SID is used
2. The patient’s MCP is angled 15 to 20 degrees with the IR
3. A long exposure time is used
4. Costal breathing is used

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

Answer 1

D. 1, 2, 3, and 4

1. A 30-inch (76-cm) or 40-inch (100-cm) SID is used
2. The patient’s MCP is angled 15 to 20 degrees with the IR
3. A long exposure time is used
4. Costal breathing is used

Question 2

A below-diaphragm AP oblique rib projection (RPO position) with accurate positioning demonstrates:

1. The ninth through twelfth ribs below the diaphragm
2. The axillary ribs without foreshortening
3. The seventh axillary rib at the center of the collimated field
4. The lower edge of the IR at the level of the pubis

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

Answer 2

A. 1 and 2 only

1. The ninth through twelfth ribs below the diaphragm
2. The axillary ribs without foreshortening

She took this out

Question 3

A lateral sternal projection:

1. Uses a grid and tight collimation to reduce scatter radiation
2. Demonstrates the sternum without humeral soft tissue superimposition
3. Is obtained after a deep inspiration
4. Requires placement of the top edge of the IR 1.5 inches (4 cm) above the jugular notch

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

Answer 3

D. 1, 2, 3, and 4

1. Uses a grid and tight collimation to reduce scatter radiation
2. Demonstrates the sternum without humeral soft tissue superimposition
3. Is obtained after a deep inspiration
4. Requires placement of the top edge of the IR 1.5 inches (4 cm) above the jugular notch

Question 4

On a PA oblique sternal projection (RAO position), the posterior ribs are blurred and magnified because:

1. A short SID is used
2. A long exposure time is used
3. The image is obtained on inspiration
4. A detail screen is used

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

Answer 4

A. 1 and 2 only

1. A short SID is used
2. A long exposure time is used

Question 5

An above-diaphram AP or PA rib projection with accurate positioning demonstrates the:

1. Scapulae outside the lung field
2. Seventh posterior rib at the center of the exposure field
3. Eighth posterior ribs above the diaphragm
4. Thoracic vertebrae-rib head articulations

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

Answer 5

D. 1, 2, 3, and 4

1. Scapulae outside the lung field
2. Seventh posterior rib at the center of the exposure field
3. Eighth posterior ribs above the diaphragm
4. Thoracic vertebrae-rib head articulations

Question 6

A left lateral sternal projection with poor positioning demonstrates the superior heart shadow extending beyond the sternum into the anteriorly located lung. How should the patient be repositioned for an optimal projection to be obtained?

1. Rotate the left thorax posteriorly
2. Position the arms behind the patient’s back
3. Take the exposure on deep inspiration
4. Rotate the right thorax anteriorly

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

Answer 6

B. 1 and 4 only

1. Rotate the left thorax posteriorly
2. Rotate the right thorax anteriorly

Question 7

A less than optimal lateral sternum projection that does not demonstrate the sternum in profile and visualizes the superior heart shadow extending anterior to the sternum:

A. Resulted because the CR was centered too posteriorly
B. Resulted because of poor costal breathing technique
C. Could be improved by rotating the right thorax anteriorly
D. Also would demonstrate the left thorax rotated posteriorly

Answer 7

C. Could be improved by rotating the right thorax anteriorly

Question 8

An AP or PA rib projection of a patient with lower anterior rib pain is obtained:

1. With the patient in an AP projection
2. On expiration
3. Using 65 to 70 kVp
4. With the shoulders at equal distances to the imaging table

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

Answer 8

B. 2 and 4 only

2. On expiration
3. With the shoulders at equal distances to the imaging table

Question 9

On a PA oblique sternal projection (RAO position) with accurate positioning, the:

1. Manubrium is demonstrated to the left of the heart shadow
2. Posterior ribs are magnified
3. Sternum is demonstrated within the heart shadow
4. Lung markings are blurred

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

Answer 9

D. 2, 3, and 4 only

2. Posterior ribs are magnified
3. Sternum is demonstrated within the heart shadow
4. Lung markings are blurred

Question 10

True or False
For a PA projection of the upper ribs, position the scapulae outside the lung field by abducting and internally rotating the patient’s arms, forcing the shoulders to rotate anteriorly.

Answer 10

True