BONY THORAX

Question 1

The sternal angle is at the level of the disk space between ___________ for an average adult

Answer 1

T4-T5

Question 2

The xiphoid process corresponds to the level of

Answer 2

T9-T10

Question 3

The inferior rib (costal) angle (inferior costal margin) corresponds to the level of

Answer 3

L2-L3

Question 4

This position checks for Pathology of the sternum, including fractures and inflammatory processes

Answer 4

RAO sternum

Question 5

What is the angle in RAO for sternum

Answer 5

15-20 degrees

Question 6

In RAO, top of IR should be about?

Answer 6

11/2 inches (4 cm) above the jugular notch

Question 7

CR in RAO of sternum is in what position?

Answer 7

perpendicular to IR directed to center of sternu

Question 8

This position for the sternum checks
- Pathology of the sternum, including fractures and inflammatory processes
- Depressed sternal fractures

Answer 8

Lateral position: R/L

Question 9

CR in Lateral position in the sternum is in what position?

Answer 9

perpendicular to IR

Question 10

This position/projection for the sternum checks for Joint subluxation or other pathology of the
sternoclavicular joints

Answer 10

PA PROJECTION: STERNOCLAVICULAR JOINTS

Question 11

Where is the CR in the PA PROJECTION: STERNOCLAVICULAR JOINTS

Answer 11

CR perpendicular, centered to level of T2-T3, or 3 inches (7 cm) distal to vertebra prominens (spinous process of C7)

Question 12

This are IMAGES OF THE RIGHT AND LEFT JOINTS OBTAINEd for the sternoclavicular joints

Answer 12

ANTERIOR OBLIQUE POSITIONS—RAO AND LAO:

Question 13

What is the degree in anterior oblique positions - RAO/LAO

Answer 13

10-15

Question 14

The CR in Anterior oblique position-RAO/LAO for the sternoclavicular joints is in what position?

Answer 14

CR perpendicular to level of T2 to T3, or 3 inches (7.5 cm)
distal to vertebra prominens, and 1 to 2 inches (2.5 to 5 cm)
lateral (toward upside) to midsagittal plane

Question 15

This position/projection checks for Pathology of the ribs, including fracture and neoplastic processes

Answer 15

AP PROJECTION: POSTERIOR RIBS

Question 16

For the CR above the diaphragm in the ap projection of the posterior ribs, what is its placement?

Answer 16

CR perpendicular to IR, centered to 3 or 4 inches (8 to 10 cm)
below jugular notch (level of T7)

Question 17

For the CR below the diaphragm in the ap projection of the posterior ribs, what is its placement?

Answer 17

CR perpendicular, centered to level of xiphoid process
* IR centered to CR (lower margin of IR at iliac crest)

Question 18

This checks for the Pathology of the ribs including fracture or neoplastic processes.
Injuries to ribs below the diaphragm are
generally to posterior ribs; therefore, AP projections are indicated

Answer 18

PA PROJECTION: ANTERIOR RIBS (ABOVE DIAPHRAGM)

Question 19

What is the placement of the CR in PA projection: anterior ribs

Answer 19

CR perpendicular to IR, centered to T7 (7 to 8 inches [18 to
20 cm] below vertebra prominens as for PA chest)

Question 20

This projection is taken to demonstrate
specific trauma to one side of the thoracic cavity

Answer 20

UNILATERAL RIB STUDY: AP-PA POSITION

Question 21

What is the placement of the CR when the unilateral rib study is above the diaphragm?

Answer 21

CR perpendicular to IR, centered midway between midsagittal
plane and outer margin of thorax

Question 22

What is the placement of the CR when the unilateral rib study is below the diaphragm?

Answer 22

Align left or right side of thorax to CR and to midline of grid or
table/upright Bucky

Question 23

This checks for Pathology of the ribs, including fracture and neoplastic processes. Oblique positions will demonstrate the axillary portion of the ribs that is not well seen on the AP-PA projections.

Answer 23

POSTERIOR OR ANTERIOR OBLIQUE POSITIONS: AXILLARY RIBS

Question 24

For the patient position in P/A O: Axillary ribs, what is the degree of the patient position?

Answer 24

Rotate patient into 45° posterior or anterior oblique, with affected side closest to IR on posterior oblique and affected side away from IR on anterior oblique

Question 25

What is the placement of the CR in A/P O: Axillary ribs

Answer 25

• CR perpendicular to IR, centered midway between lateral the margin of ribs and spine

Above diaphragm
* CR to level 3 or 4 inches (8 to 10 cm) below jugular notch (T7) (top of IR approximately 11/2 inches [4 cm] above shoulders)

Below diaphragm
* CR to level midway between the xiphoid process and lower rib cage (bottom of the cassette at about level of the iliac crest)