LRA-218 Week 1

Question 1

What is the distance between the tabletop and Bucky tray on most floating tabletop type of tables?

Answer 1

3-4 inches between bucky and table top

Question 2

How should the original kV range be changed with a fiberglass cast applied for a wrist or forearm radiographic procedure?

Answer 2

Increase 3-4 Kv

Question 3

How much CR angulation to the long axis of the hand is required for the tangential, inferosuperior projection to demonstrate the carpal sulcus (canal)?

Answer 3

25-30 degrees

Question 4

A patient enters the emergency department (ED) with a Smith fracture. Which region of the upper limb must be radiographed to demonstrate this injury?

Answer 4

Wrist and forearm

Question 5

A patient enters the ED with a possible scaphoid fracture. The patient is unable to assume the ulnar deviation position. What position should be performed to confirm the diagnosis?

Answer 5

Modified Stecher Method (PA Scaphoid)

Question 6

Which wrist ligament is attached to the styloid process of the ulna and continues to the triquetrum and pisiform?

Answer 6

Ulnar collateral ligament

Question 7

The two fat stripes of the wrist demonstrated radiographically are known as the scaphoid fat stripe and the _____ fat stripe.

Answer 7

pronator

Question 8

define carpal bridge

Answer 8

• a tangential projection (special projection)
• hand is hyperflexed
• CR 45 degree to forearm
• placing the dorsal surface of the hand on the IR
• palm upward
• inversion
• Patient must stand up or sit down

Question 9

define radial deviation

Answer 9

• patient tilts/moves to the radial side
• this opens up the ulna side
• view any fractures of the carpals in the side of the ulna

Question 10

define ulnar deviation

Answer 10

• patient tilts/moves the hand laterally or to the ulna side
• this is to open up the side of the radius
• view any fractures in the scaphoid bone
• scaphoid is the most common bone to get fractured