RAD-105 • Chapter 4 Quiz
Get a hint
A right lateral fourth finger projection obtained with the hand internally rotated to 20º
demonstrates:
I. equal soft tissue width on both sides of the phalanges
II. more phalangeal midshaft concavity on the side facing the fifth finger
III. convexity on one side of the phalanges & concavity on the opposite side
IV. greater phalangeal midshaft concavity on the side facing the third finger
a. IV only
b. II, III, & IV only
c. I & IV only
d. II & III only - ANS-a. IV only
How is a patient positioned for a PA wrist projection to superimpose the anterior & posterior
margins of the distal radius & obtain open radioscaphoid & radiolunate joint spaces?
a. align the third metacarpal with the forearm
b. flex the hand until the metacarpals are at a 10º-15º angle with the IR
c. depress the proximal forearm
d. ulnar flex the wrist - ANS-c. depress the proximal forearm
A PA wrist projection obtained in slight external rotation demonstrates:
I. superimposition of the laterally located carpal bones
II. a closed radioulnar articulation
III. open lateral carpal joint spaces
IV. the radial styloid in profile
a. II & III only
b. II, III, & IV only
c. I, II, & IV only
d. I & IV only - ANS-a. II & III only
A PA wrist projection obtained in radial deviation demonstrates:
I. the lunate positioned distal to the ulna
II. a foreshortened scaphoid
III. closed CM joints
IV. an elongated scaphoid
a. I, II, & IV only
b. I & II only
, c. III & IV only
d. I, II, & III only - ANS-b. I & II only
A lateral wrist projection obtained with the wrist in slight internal rotation demonstrates the:
I. distal scaphoid anterior to the pisiform
II. radius posterior to the ulna
III. distal scaphoid distal to the pisiform
IV. radius anterior to the ulna
a. III & IV only
b. I & II only
c. I & IV only
d. II & III only - ANS-c. I & IV only
When the patient ulnar-deviates for a PA axial, ulnar-deviated wrist projection, the:
I. first metacarpal & radius are aligned
II. distal scaphoid shifts anteriorly
III. lunate is demonstrated distal to the radius
IV. distal scaphoid shifts posteriorly
a. III & IV only
b. I, III, & IV only
c. I, II, & III only
d. I & II only - ANS-b. I, III, & IV only
For a carpal canal wrist image, the:
I. wrist is hyperextended until the long axes of the metacarpals are vertical
II. hand is rotated 10º internally until the fifth metacarpal is perpendicular to the IR
III. central ray is angled 25º-30º proximally
IV. central ray is centered to the palm of the hand
a. I, II, & III only
b. I & IV only
c. II & III only
d. I, II, III, & IV - ANS-d. I, II, III, & IV
A tangential, inferosuperior carpal canal wrist projection with accurate positioning demonstrates:
a. the fifth metacarpal
b. the carpal canal
c. superimposition of the pisiform & hamulus of the hamate
d. the carpal bones with maximum elongation - ANS-b. the carpal canal
To take advantage of the anode heel effect when imaging a forearm:
Get a hint
A right lateral fourth finger projection obtained with the hand internally rotated to 20º
demonstrates:
I. equal soft tissue width on both sides of the phalanges
II. more phalangeal midshaft concavity on the side facing the fifth finger
III. convexity on one side of the phalanges & concavity on the opposite side
IV. greater phalangeal midshaft concavity on the side facing the third finger
a. IV only
b. II, III, & IV only
c. I & IV only
d. II & III only - ANS-a. IV only
How is a patient positioned for a PA wrist projection to superimpose the anterior & posterior
margins of the distal radius & obtain open radioscaphoid & radiolunate joint spaces?
a. align the third metacarpal with the forearm
b. flex the hand until the metacarpals are at a 10º-15º angle with the IR
c. depress the proximal forearm
d. ulnar flex the wrist - ANS-c. depress the proximal forearm
A PA wrist projection obtained in slight external rotation demonstrates:
I. superimposition of the laterally located carpal bones
II. a closed radioulnar articulation
III. open lateral carpal joint spaces
IV. the radial styloid in profile
a. II & III only
b. II, III, & IV only
c. I, II, & IV only
d. I & IV only - ANS-a. II & III only
A PA wrist projection obtained in radial deviation demonstrates:
I. the lunate positioned distal to the ulna
II. a foreshortened scaphoid
III. closed CM joints
IV. an elongated scaphoid
a. I, II, & IV only
b. I & II only
, c. III & IV only
d. I, II, & III only - ANS-b. I & II only
A lateral wrist projection obtained with the wrist in slight internal rotation demonstrates the:
I. distal scaphoid anterior to the pisiform
II. radius posterior to the ulna
III. distal scaphoid distal to the pisiform
IV. radius anterior to the ulna
a. III & IV only
b. I & II only
c. I & IV only
d. II & III only - ANS-c. I & IV only
When the patient ulnar-deviates for a PA axial, ulnar-deviated wrist projection, the:
I. first metacarpal & radius are aligned
II. distal scaphoid shifts anteriorly
III. lunate is demonstrated distal to the radius
IV. distal scaphoid shifts posteriorly
a. III & IV only
b. I, III, & IV only
c. I, II, & III only
d. I & II only - ANS-b. I, III, & IV only
For a carpal canal wrist image, the:
I. wrist is hyperextended until the long axes of the metacarpals are vertical
II. hand is rotated 10º internally until the fifth metacarpal is perpendicular to the IR
III. central ray is angled 25º-30º proximally
IV. central ray is centered to the palm of the hand
a. I, II, & III only
b. I & IV only
c. II & III only
d. I, II, III, & IV - ANS-d. I, II, III, & IV
A tangential, inferosuperior carpal canal wrist projection with accurate positioning demonstrates:
a. the fifth metacarpal
b. the carpal canal
c. superimposition of the pisiform & hamulus of the hamate
d. the carpal bones with maximum elongation - ANS-b. the carpal canal
To take advantage of the anode heel effect when imaging a forearm:
