Ribs/Sternum

Question 1

On an AP rib projection with accurate positioning:

1. rib magnification is minimal.
2. the costovertebral articulations are demonstrated.
3. equidistance from the vertebral column to the SC jts.
4. equidistance from the spinous processes to the pedicles.

Answer 1

1, 2, 3, and 4 only

Question 2

An AP rib radiograph with poor positioning demonstrates the left ribs elongated, and a smaller space between the spinous process and pedicles on the right side. This patient was mispositioned into an__________ position.

a. LPO
b. RPO

Answer 2

a. LPO

Question 3

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.

Answer 3

2, 3, and 4 only

Question 4

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?

a. Rotate the left thorax posteriorly.
b. Rotate the right thorax posteriorly.
c. Position the arms behind the patient’s back.
d. Take the exposure on deep inspiration.

Answer 4

a. Rotate the left thorax posteriorly.

Question 5

An AP oblique rib projection obtained with the patient rotated less than 45 degrees demonstrates the:

a. axillary ribs are demonstrated without superimposition.
b. the inferior sternal body laterally.
c. the sternal body next to the vertebral column.
d. anterior ribs are located at the lateral edge.

Answer 5

c. the sternal body next to the vertebral column.

Question 6

A PA oblique sternal projection (RAO position) with poor positioning demonstrates the right SC joint and manubrium superimposed by the thoracic vertebrae. How should the patient be repositioned for an optimal projection to be obtained?

a. Have the patient take a deep inspiration before the image is obtained.
b. Increase the degree of patient obliquity.
c. Decrease the degree of patient obliquity.
d. Center the central ray and IR closer to the vertebral column.

Answer 6

b. Increase the degree of patient obliquity.