1) A system can be defined as:
All elements (e.g., hardware, software, logistics support, personnel) needed to assist
the Department of Defense (DoD) to conduct its mission of deterring or winning war
The deployment and fielding processes used by the Department of Defense (DoD) to
conduct its m...
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Radiologic Science for Technologists 11th Edition Bushong Test Bank
Chapter 13: Screen-Film Radiographic Technique
Bushong: Radiologic Science for Technologists: Physics, Biology, and Protection, 11th
Edition
MULTIPLE CHOICE
1. What are the four primary exposure factors?
a. kVp, mAs, filtration, and voltage ripple
b. mA, time, distance, and filtration
c. kVp, mAs, time, and SID
d. mA, time, kVp controls, and focal spot size
ANS: C
The four primary exposure factors are kVp, mAs, time, and SID.
DIF: Moderate REF: p. 237 OBJ: List the four prime exposure factors.
2. Changes in kVp affect _____________.
a. optical density
b. image contrast
c. image noise
d. All of the above
ANS: D
Changes in kVp affect optical density, image contrast, and image noise.
DIF: Moderate REF: p.NURSINGOBJ:
237 TB.C OM how changes in kVp affect the image.
Describe
3. An increase in mAs causes ______________ in beam quality and ___________ in beam
quantity.
a. an increase, a decrease
b. an increase, no change
c. an increase, an increase
d. no change, an increase
ANS: D
An increase in mAs causes no change in beam quality and an increase in beam quantity.
DIF: Moderate REF: p. 237
OBJ: Discuss mAs in relation to x-ray beam quantity and quality.
4. There is a direct relationship between the quantity of x-rays and the _______________.
a. milliamperage
b. kilovolt peak
c. filter thickness
d. voltage ripple
ANS: A
There is a direct relationship between the quantity of x-rays and the milliamperage.
DIF: Moderate REF: p. 238 OBJ: Discuss mAs in relation to x-ray beam quantity.
NURSINGTB.COM
, Radiologic Science for Technologists 11th Edition Bushong Test Bank
5. If mAs is increased from 20 mAs to 40 mAs, the patient dose will _____________.
a. not be affected
b. increase slightly
c. be halved
d. be doubled
ANS: D
If mAs is increased from 20 mAs to 40 mAs the patient dose will be doubled.
DIF: Moderate REF: p. 238 OBJ: Discuss mAs in relation to patient dose.
6. Beam penetrability is increased if ________ is/are increased.
a. mAs
b. SID
c. kVp
d. All of the above
ANS: C
Beam penetrability is increased if kVp is increased.
DIF: Moderate REF: p. 237
OBJ: Discuss kVp in relation to x-ray beam penetrability.
7. A _____% increase in kVp has the same effect on optical density as doubling the mAs.
a. 5
b. 15
c. 30 NURSINGTB.COM
d. 50
ANS: B
A 15% increase in kVp has the same effect on optical density as doubling the mAs.
DIF: Moderate REF: p. 248 OBJ: Identify how changes in kVp affect optical density.
8. A radiograph with a long scale of contrast will have ________ latitude and ________ contrast.
a. narrow, low
b. narrow, high
c. wide, low
d. wide, high
ANS: C
A radiograph with long scale of contrast will also have wide latitude and low contrast.
DIF: Difficult REF: p. 249
OBJ: Identify the relationship between degrees of contrast, scale of contrast, and image latitude.
9. A radiograph is taken using 75 kVp @ 20 mAs. Which change in technique would increase
contrast but maintain the same density?
a. 85 kVp @ 10 mAs
b. 85 kVp @ 40 mAs
c. 65 kVp @ 20 mAs
NURSINGTB.COM
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