Chapter 11 Computed Radiography Bushong: Radiologic Science for Technologists
MULTIPLE CHOICE
1. Digital radiography was first introduced by .
a. GE in 1998
b. Fuji in 1981
c. Kodak in 1975
d. DuPont in 1965
ANS: B
Digital radiography was first introduced by Fuji in 1981.
2. Computed radiography screens respond to radiation with
. a. fluorescence
b. electron emission
c. photostimulable luminescence
d. biological phosphorescence
ANS: C
Computed radiography screens respond to radiation with photostimulable luminescence.
3. A photostimulable phosphor in a metastable state will emit light
. a. immediately
b. when stimulated by light
c. immediately and when stimulated by light
d. immediately, when stimulated by light, and over time
, ANS: D
A photostimulable phosphor in a metastable state will emit light immediately,
when stimulated by light, and over time.
4. Europium is the of the photostimulable phosphor.
a. image buffer
b. scintillator
c. phosphor
d. activator
ANS: D
Europium is the activator of the photostimulable phosphor.
5. The computed radiography cassette is called a(n) receptor. a.
optical
b. imaging
c. laser
d. thermoluminescent
ANS: B
The computed radiography cassette is called an imaging plate.
6. The photostimulable phosphor screen is handled in a . a. reader
b. darkroom
c. daylight processor
d. Direct capture
, ANS: A
The photostimulable phosphor screen is handled in a reader.
7. The computed radiography reader is made up of _ , , and modules.
I.
mechanic
al II.
chemical
III.
optical
IV.
comput
er
a. mechanical; chemical; optical
b. chemical; optical; computer
c. mechanical; optical; computer
d. mechanical; chemical; computer
ANS: C
The computed radiography reader is made up of mechanical, optical, and computer
modules.
8. The four steps of creating an image with computed radiography are
.
a. metastable state, stimulate, read, and erase
b. erase, stimulate, metastable state, and read
c. read, erase, stimulate, and metastable state
d. metastable state, read, erase, and stimulate
MULTIPLE CHOICE
1. Digital radiography was first introduced by .
a. GE in 1998
b. Fuji in 1981
c. Kodak in 1975
d. DuPont in 1965
ANS: B
Digital radiography was first introduced by Fuji in 1981.
2. Computed radiography screens respond to radiation with
. a. fluorescence
b. electron emission
c. photostimulable luminescence
d. biological phosphorescence
ANS: C
Computed radiography screens respond to radiation with photostimulable luminescence.
3. A photostimulable phosphor in a metastable state will emit light
. a. immediately
b. when stimulated by light
c. immediately and when stimulated by light
d. immediately, when stimulated by light, and over time
, ANS: D
A photostimulable phosphor in a metastable state will emit light immediately,
when stimulated by light, and over time.
4. Europium is the of the photostimulable phosphor.
a. image buffer
b. scintillator
c. phosphor
d. activator
ANS: D
Europium is the activator of the photostimulable phosphor.
5. The computed radiography cassette is called a(n) receptor. a.
optical
b. imaging
c. laser
d. thermoluminescent
ANS: B
The computed radiography cassette is called an imaging plate.
6. The photostimulable phosphor screen is handled in a . a. reader
b. darkroom
c. daylight processor
d. Direct capture
, ANS: A
The photostimulable phosphor screen is handled in a reader.
7. The computed radiography reader is made up of _ , , and modules.
I.
mechanic
al II.
chemical
III.
optical
IV.
comput
er
a. mechanical; chemical; optical
b. chemical; optical; computer
c. mechanical; optical; computer
d. mechanical; chemical; computer
ANS: C
The computed radiography reader is made up of mechanical, optical, and computer
modules.
8. The four steps of creating an image with computed radiography are
.
a. metastable state, stimulate, read, and erase
b. erase, stimulate, metastable state, and read
c. read, erase, stimulate, and metastable state
d. metastable state, read, erase, and stimulate
