Patient Factors Flashcards
1
Q
What patient factors influence required radiographic technique?
A
- size and shape (body habitus)
- anatomy density (thickness)
- pathology
- composition (chest vs abdomen)
2
Q
Body Habitus
A
Body Habitus
3
Q
Sthenic
A
“strong, active”. Average size
4
Q
Hyposthenic
A
thin but healthy in appearance
5
Q
Hypersthenic
A
large framed and usually overweight
6
Q
Asthenic
A
small, frail, emaciated and often elderly
7
Q
Thickness
A
Thickness
8
Q
The thicker the patient the more _______ are needed to _________ to expose the image receptor
A
- x-rays
- penetrate the body
9
Q
kV is based on ________
A
body part thickness
10
Q
Do not guess thickness use _______
A
calipers
11
Q
Composition
Measuring the thickness of a part doesn’t automatically release the technologist from excercising some additional judgement when selecting the ____________
A
proper technical factors
12
Q
Chest
A
- lung (air), ribs (bone), heart (muscle)
- high contrast: black/white minimal grays
13
Q
Abdomen
A
- stomach, bowels, liver, kidney, spleen, pancreas, diaphragm, urinary, bladder
- low contrast: many shades of gray
14
Q
Radiopaque
A
- difficult to penetrate
- bone, metal
15
Q
Radiolucent
A
- easy to penetrate
- air, soft tissue
