clincal imaging

Question 1

The 5 radiographic densities:

Answer 1

Air, fat, water, bone, metal

Question 2

Radiopaque

Answer 2

metal- white on film

Question 3

Radiolucent

Answer 3

air or fat- dark or black on film

Question 4

Long zone of transition

Answer 4

= indiscrete borders- indistinct margins- sign of aggressiveness

Question 5

Short zone of transition

Answer 5

discrete borders- distinct margins

Question 6

Lucent is a more benign connotation to describe an…

Answer 6

area of bone destruction

Question 7

Lytic is a more aggressive connotation to describe an…

Answer 7

area of bone destruction

Question 8

Sclerotic vs. blastic

Answer 8

same as lucent-lytic. Sclerotic is a “less aggressive” descriptor,
blastic is a more “aggressive” connotation

Question 9

Bone matrix

Answer 9

Sclerotic/blastic

Question 10

Cartilage matrix

Answer 10

= lucent with areas of flocculent or arcs and rings calcification

Question 11

Fibrous matrix

Answer 11

lucent but hazy- not a “hole in bone” but rather a shade of gray that is neither black nor white- frosted mug appearance… ground glass…

Question 12

CATBITES mnemonic

Answer 12

o Congenital/dysplasia 
o Arthritis 
o Trauma 
o Blood/vascular 
o Infection/inflammatory 
o Tumor/tumor-like 
o Endocrine/metabolic 
o Soft tissue

Question 13

ABCS mnemonic for skeletal radiographs

Answer 13

 Alignment
 Bone
 Cartilage Space
 Soft Tissue