Chapter 23 Patient-Image Optimization Bushong: Radiologic Science for Technologists
MULTIPLE CHOICE
1. Patient factors include .
a. anatomical thickness and body composition
b. body composition and patient height
c. anatomical thickness and patient gender
d. patient height and patient gender
ANS: A
Patient factors include anatomical thickness and body composition.
2. Which body habitus indicates an average patient?
a. Hypersthenic
b. Hyposthenic
c. Sthenic
d. Asthenic
ANS: C
Sthenic—meaning ―strong, active‖—patients are average patients.
3. Which body habitus indicates a thin, but healthy appearing patient?
a. Hypersthenic
b. Hyposthenic
, c. Sthenic
d. Asthenic
ANS: B
Hyposthenic patients are thin but healthy appearing.
4. Patient thickness affects radiographic technique by affecting _.
a. source to image receptor distance
b. object to Image receptor distance
c. source to object distance
d. mAs and kVp settings
ANS: D
Patient thickness affects radiographic technique by affecting mAs and kVp settings.
5. A high quality radiographic image should always demonstrate .
a. structures and tissues
b. high contrast
c. minimum magnification
d. maximum distortion
ANS: A
A high quality radiograph should always demonstrate structures and tissues.
6. Spatial resolution is limited to .
a. brightness of the display monitor
b. motion
c. postprocessing
, d. pixel size
ANS: D
Spatial resolution is limited to pixel size.
7. is defined as the ability to image two separate objects and visually detect one from the
other. a. Contrast
b. Resolution
c. Detail
d. Noise
ANS: B
Resolution is defined as the ability to image two separate objects and visually detect one
from the other.
8. What is the formula for the magnification factor?
a. MF = SID/SOD
b. MF = SOD/SID
c. MF = (SID/SOD)2
d. MF = SID2/SOD
ANS: A
The formula for magnification factor is: MF = SID/SOD.
9. The best way to minimize magnification is to use a .
a. long SID
b. small OID
c. large OID
MULTIPLE CHOICE
1. Patient factors include .
a. anatomical thickness and body composition
b. body composition and patient height
c. anatomical thickness and patient gender
d. patient height and patient gender
ANS: A
Patient factors include anatomical thickness and body composition.
2. Which body habitus indicates an average patient?
a. Hypersthenic
b. Hyposthenic
c. Sthenic
d. Asthenic
ANS: C
Sthenic—meaning ―strong, active‖—patients are average patients.
3. Which body habitus indicates a thin, but healthy appearing patient?
a. Hypersthenic
b. Hyposthenic
, c. Sthenic
d. Asthenic
ANS: B
Hyposthenic patients are thin but healthy appearing.
4. Patient thickness affects radiographic technique by affecting _.
a. source to image receptor distance
b. object to Image receptor distance
c. source to object distance
d. mAs and kVp settings
ANS: D
Patient thickness affects radiographic technique by affecting mAs and kVp settings.
5. A high quality radiographic image should always demonstrate .
a. structures and tissues
b. high contrast
c. minimum magnification
d. maximum distortion
ANS: A
A high quality radiograph should always demonstrate structures and tissues.
6. Spatial resolution is limited to .
a. brightness of the display monitor
b. motion
c. postprocessing
, d. pixel size
ANS: D
Spatial resolution is limited to pixel size.
7. is defined as the ability to image two separate objects and visually detect one from the
other. a. Contrast
b. Resolution
c. Detail
d. Noise
ANS: B
Resolution is defined as the ability to image two separate objects and visually detect one
from the other.
8. What is the formula for the magnification factor?
a. MF = SID/SOD
b. MF = SOD/SID
c. MF = (SID/SOD)2
d. MF = SID2/SOD
ANS: A
The formula for magnification factor is: MF = SID/SOD.
9. The best way to minimize magnification is to use a .
a. long SID
b. small OID
c. large OID
