ARRT Radiology Exam 3 | Complete Questions and Verified Answers

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ARRT radiology exam 3
high kVp / kilovoltage correct answers interaction between the x ray photons and matter as
illustrated in Figure 4 - 22 is most likely to be associated with


picture page 220



The higher the ________the greater the exposure latitude / margin of error in exposure



A.kilovoltage range
B.mAs range
C.grid range correct answers A.kilovoltage range




Bushong 9th edition page 256 - 257



Higher _______ produces more energetic photons, is more penetrating, and produces more grays
on a radiographic image, lengthening the scale of contrasts.


A.kilovoltage
B.mAs
C.grid correct answers A.kilovoltage




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Bushong 9th edition page 256 - 257


As kilovoltage increases, the percentage of scattered radiation also increases


A.kilovoltage

B.mAs

C.grid correct answers A.kilovoltage




Bushong 9th edition page 256 - 257


Differences inadjacent densities on the image.
High _______: Few shades of gray, short scale (low kvp)

Low ________: Many shades of gray, long scale (high kvp)
Factors affecting: grids, beam restriction, filtration, anatomy, pathology correct answers Contrast



The active portion of a CR IP is(are):
a. Calcium tungstate
b. PSP
c. Silver bromide crystals

d. Rare earth phosphor correct answers b. PSP
photo stimulated phosphor




Mosby's Comprehensive Review of Radiography: The Complete Study Guide and ...
By William J. Callaway




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one of the biggest advantages of CR/DR is the _______ it offers


a. latitude
b. longitude
c. Silver bromide crystals

d. Rare earth phosphor correct answers a. latitude



also known as exposure latitude




Shepherd page 332


With CR/DR this affords a much greater exposure latitude and technical inaccuracies can be
effectively eliminated. Over exposures of up to _______ percent and under exposures of up to
_____ PERCENT are reported as recoverable thus eliminating most retakes


A.
B.
C.50/50

D. correct answers A. percent




Shepherd page 332


in CR/DR there is a _______ relationship between the exposure given to the PSP and its
resulting luminescence as it is scanned by the laser




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A.sigmoidal
B.nonlinear
C.linear
D.circular correct answers C.linear




Shepherd page 332


in film there is a _______ relationship Limited by the toe and shoulder of the characteristic curve


A.sinusoidal
B.nonlinear
C.linear

D.circular correct answers A.sinusoidal




Shepherd page 332


Most of the xrays generated at the focal spot are directed downward and pass through the xray
tubes ________




A.anode
B.cathode
C.port window
D.anode bevel correct answers C.port window




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