LMRT Core Review Questions and Correct Answers/ Latest Update / Already Graded

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LMRT Core Review Questions and
Correct Answers/ Latest Update /
Already Graded
As a professional radiographer, the practice of ALARA requires you

to


Ans: restrict the XR beam to the clinical area of interest




The factors that affect XR emission under the direct control of the

radiographer are called_ factors


Ans: prime




Milliamperage-second (mAs) directly affects all of the following

EXCEPT


Ans: beam quality




The factors that directly affect XR quantity are

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Ans: mA & filtration




The factors that directly affect XR quality are


Ans: kVp & beam filtration




If 1 coulomb is equal to 6.3 x 10(18) electron charges, how many

electrons flow from cathode to anode 1 second


Ans: 6.3 x 10(18)




If 1 ampere equals a flow of 6.3 x 10(18) electrons per second, how

many electrons flow from cathode to anode in 1 milliampere?


Ans: 6.3 x 10(15)




As the mA doubles, the number of electrons flowing from cathode to

anode


Ans: increase 2-fold

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The product of tube current 7 exposure time is equal to


Ans: XR beam quantity




In order to increase radiographic film density by 40% the

radiographer would


Ans: change the mAs from 15-21 mAs




The relationship between mAs & exposure is


Ans: directly proportional




The reaction of a photographic film to light is equal to the product of

the intensity of the light and the duration of the light exposure.


Ans: the reciprocity law




Increasing the kVp for an exposure will


Ans: cause the electrons to travel faster from cathode to anode