Central Ray
Positioning
Common Abbreviations
Pathology
Projection
100

The central ray is directed 10 deg. posteriorly towards the base of the third metatarsal.

What is the anteroposterior or AP axial foot?

100

The patient is supine and the arm is abducted to form a right angle with the chest and brought to the forehead.

What is the AP scapula?

100

The acronym letter BUN denotes signifies________.

What is blood, urea, and nitrogen?

100

Avulsion fracture at the base of the fifth metatarsal.

What is the Jones fracture?

100

Demonstrates an elongated scaphoid bone with no superimposition from the other carpal bones.

What is the Scaphoid PA or Stecher?

200

The CR is directed perpendiculuarly to the IR to the mid-malleolar region. (multiple ans.)

What is the AP ankle, AP oblique ankle mortise, and the oblique ankle?

200

The wrist is angled by elevating the hand 20 deg. toward the elbow.

What is the PA scaphoid or Stecher?

200

The acronym letter CDC represents___________.

What is the Center for Disease Control?

200

Fracture at the radius with anterior (palmar) displacement.

What is the Smith fracture?

200

Demonstrates the carpal bones on the inferior aspect of the wrist.

What is the Carpal Tunnel Canal or Gaynor-Hart?

300

The central ray is directed perpendicular to the 3rd metacarpophalangeal (MCP) joint.

What is the PA hand?

300

The hand is pronated with the fingers flexed.

What is the PA wrist?

300

The acronym letter "A" denotes___________.

What is atomic mass?

300

Malignant tumor arising from cartilage cells.

What is Chondrosarcoma?

300

Demonstrates the distal humerus, proximal radius and ulna, and elbow joint.

What is the AP elbow?

400

The central ray is directed perpendicularly to the mid carpal region.

What is the posteroanterior (PA) wrist?

400

The foot is rotated medially 30 deg. 

What is the medial oblique foot?

400

The acronym letter Sv denotes__________.

What is a Sievert?

400

Chronic, systemic, inflammatory collagen disease.

What is Rheumatoid arthritis?

400

Demonstrates the 2nd-5th metacarpals superimposed.

What is the lateral hand?

500

The central ray is directed 1" inferior to the coracoid process.

What is the AP internal and external shoulder?

500

The ankle is dorsiflexed and internally rotated 15-20 deg. 

What is the oblique ankle mortise?

500

The acronym letter ARRT represents ______________.

What is the American Registry of Radiologic Technologists?

500

Malignant tumor of bone arising in medullary tissue.

What is Ewing Sarcoma?

500

Demonstrates the distal humerus, the proximal radius and ulna, elbow joint, the trochlea and capitulum superimposed.

What is the lateral elbow?