Extremities

Question 1

Hand PA

Answer 1

SID- 40 in
Part position - hand open fingers, extend, with palmar surface in contact with ir.
Central ray - perpendicular to second MCP joint same for PA oblique

Question 2

Hand lateral

Answer 2

Medial aspect of hand is in contact with ir with coronal plane of hand perpendicular to ir. Thumb is positioned as PA projection
Central ray- perpendicular to second mcp joint

Question 3

PA Wrist

Answer 3

Part position
PA - anterior surface of wrist is in contact with it fingers are flexed to form a loose fist, placing wrist in former contact with ir and opening intercarpal joints
Central ray- perpendicular to mid carpal area

Question 4

Wrist Pa oblique
Lateral body position and central ray

Answer 4

Position
Oblique rotate laterally. 45 degree use sponge if available
Lateral rotate laterally on to side, ulnar side on cassette
Central ray perpendicular to the midcarpal area

Question 5

The small long bones of the digits are called

Answer 5

Phalanges

Question 6

The long narrow bone located anterior to the upper portion of the rib cage and commonly know as collarbone is the

Answer 6

Clavicle

Question 7

What is the bony landmark for wrist positioning that is a prominence on the lateral aspect of the wrist (patient is in anatomic position)

Answer 7

Styloid process of the radius

Question 8

The head of the radius articulate with the rounded process of the distal humerus that is called

Answer 8

Capitulum

Question 9

Why is the stair step sponge used for a PA oblique projection of the hand when the fingers are of interest

Answer 9

Improved visualization of the Interphalangeal joints

Question 10

When positioning the hand pa oblique projection the modified teacup position the surface of the hand in contact with the ir is

Answer 10

Anteromedial

Question 11

The pa projection of the wrist in ulnar deviation is a valuable addition to the routine wrist series in cases of

Answer 11

Scaphoid fracture

Question 12

The projection that constitutes a routine examination of the forearm are

Answer 12

Ap and lateral

Question 13

What is the minimum SID distance used for nearly all radiographic images of the upper limb

Answer 13

40 in

Question 14

Describe how the hand is positioned for the PA projection

Answer 14

Hand open fingers extended with palmar surface in contact with ir fingers moderately separated

Question 15

What is the CR centering point for the PA projection of the hand

Answer 15

Perpendicular to the 3rd MCP JOINT

Question 16

What is the amount of lateral rotation needed to achieve a Pa oblique projection of the hand

Answer 16

Coronal plane of the hand forms 45 degree angle with Ir

Question 17

Describe the positioning details for the PA oblique projection of the fourth finger

Answer 17

From the PA , hand is rotated lateral to place anteromedial (palmar/ulnar) surface in contact with the IR. Coronal plane of fingers at 45 degree angle to IR. Fingers are suppported by stair step sponge

Question 18

Why is the PA projection not the routine projection for the thumb

Answer 18

The resulting image will have less detail that the AP projection image because the increased OID results in greater magnification distortion

Question 19

Describe positioning details for the PA projection of the wrist

Answer 19

Anterior surface of wrist is in contact with ir. Fingers are flexed go form loose fist, placing wrist in close contact with IR and opening inter carpal joints

Question 20

What is the CR centering point for the PA projection of the wrist

Answer 20

Perpendicular to the midcarpal area

Question 21

Describe the positioning detail for lateral projection of wrist

Answer 21

Medial surface of the wrist is in contact with Ir. Coronal plane of wrist is perpendicular to ir