1|Page
LMRT CORE REVIEW 2025/2026 – LIMITED
SCOPE RADIOGRAPHY STUDY GUIDE WITH
KEY CONCEPTS, PRACTICE QUESTIONS WITH
ARRT-ALIGNED SOLUTIONS
restrict the XR beam to the clinical area of interest -correct-answer-As a
professional radiographer, the practice of ALARA requires you to
prime -correct-answer-The factors that affect XR emission under the direct control
of the radiographer are called_ factors
beam quality -correct-answer-Milliamperage-second (mAs) directly affects all of
the following EXCEPT
mA & filtration -correct-answer-The factors that directly affect XR quantity are
kVp & beam filtration -correct-answer-The factors that directly affect XR quality
are
, 2|Page
6.3 x 10(18) -correct-answer-If 1 coulomb is equal to 6.3 x 10(18) electron
charges, how many electrons flow from cathode to anode 1 second
6.3 x 10(15) -correct-answer-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?
increase 2-fold -correct-answer-As the mA doubles, the number of electrons
flowing from cathode to anode
XR beam quantity -correct-answer-The product of tube current 7 exposure time is
equal to
change the mAs from 15-21 mAs -correct-answer-In order to increase
radiographic film density by 40% the radiographer would
directly proportional -correct-answer-The relationship between mAs & exposure
is
LMRT CORE REVIEW 2025/2026 – LIMITED
SCOPE RADIOGRAPHY STUDY GUIDE WITH
KEY CONCEPTS, PRACTICE QUESTIONS WITH
ARRT-ALIGNED SOLUTIONS
restrict the XR beam to the clinical area of interest -correct-answer-As a
professional radiographer, the practice of ALARA requires you to
prime -correct-answer-The factors that affect XR emission under the direct control
of the radiographer are called_ factors
beam quality -correct-answer-Milliamperage-second (mAs) directly affects all of
the following EXCEPT
mA & filtration -correct-answer-The factors that directly affect XR quantity are
kVp & beam filtration -correct-answer-The factors that directly affect XR quality
are
, 2|Page
6.3 x 10(18) -correct-answer-If 1 coulomb is equal to 6.3 x 10(18) electron
charges, how many electrons flow from cathode to anode 1 second
6.3 x 10(15) -correct-answer-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?
increase 2-fold -correct-answer-As the mA doubles, the number of electrons
flowing from cathode to anode
XR beam quantity -correct-answer-The product of tube current 7 exposure time is
equal to
change the mAs from 15-21 mAs -correct-answer-In order to increase
radiographic film density by 40% the radiographer would
directly proportional -correct-answer-The relationship between mAs & exposure
is
