LMRT CORE REVIEW | 2026 UPDATE | QUESTIONS AND ANSWERS | RATED 100% CORRECT
restrict the XR beam to the clinical area of interest - (ANSWER)As a professional radiographer, the
practice of ALARA requires you to
prime - (ANSWER)The factors that affect XR emission under the direct control of the radiographer are
called_ factors
beam quality - (ANSWER)Milliamperage-second (mAs) directly affects all of the following EXCEPT
mA & filtration - (ANSWER)The factors that directly affect XR quantity are
kVp & beam filtration - (ANSWER)The factors that directly affect XR quality are
6.3 x 10(18) - (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) - (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 - (ANSWER)As the mA doubles, the number of electrons flowing from cathode to anode
XR beam quantity - (ANSWER)The product of tube current 7 exposure time is equal to
change the mAs from 15-21 mAs - (ANSWER)In order to increase radiographic film density by 40% the
radiographer would
directly proportional - (ANSWER)The relationship between mAs & exposure is
the reciprocity law - (ANSWER)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.
, LMRT CORE REVIEW | 2026 UPDATE | QUESTIONS AND ANSWERS | RATED 100% CORRECT
cause the electrons to travel faster from cathode to anode - (ANSWER)Increasing the kVp for an
exposure will
greater energy - (ANSWER)Increasing the energy of an incident electron will result in the production of
an XR photon with
radiographic film density - (ANSWER)Kilovoltage is the primary controlling factor of
contrast - (ANSWER)Adjustments in kVp should be used to control radiographic
kVp - (ANSWER)XR beam penetrability is primarily controlled by
400 mA, 200 ms, 40" SID - (ANSWER)All factor remaining constant, which of the following set of
exposure conditions would yield an image with GREATEST radiographic film density
motion - (ANSWER)The length of the exposure time (S) for a radiograph, is used to primarily control
400 mA,0.110 sec, 80 kVp - (ANSWER)A radiograph is taken 400 mA, 55 ms, 95 kVp. A second image
could be taken to improve contrast at
attenuation - (ANSWER)When an XR photon passes through matter, it undergoes a process called
reduce in number - (ANSWER)During the process of attenuation, XR photons in the beam
lead (Z=82) - (ANSWER)In which element are the inner-shell electrons more tightly bound to the
nucleus?
increase; decrease - (ANSWER)As the electron shells move farther from the nucleus, total electron
energies_ and binding energies_.
restrict the XR beam to the clinical area of interest - (ANSWER)As a professional radiographer, the
practice of ALARA requires you to
prime - (ANSWER)The factors that affect XR emission under the direct control of the radiographer are
called_ factors
beam quality - (ANSWER)Milliamperage-second (mAs) directly affects all of the following EXCEPT
mA & filtration - (ANSWER)The factors that directly affect XR quantity are
kVp & beam filtration - (ANSWER)The factors that directly affect XR quality are
6.3 x 10(18) - (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) - (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 - (ANSWER)As the mA doubles, the number of electrons flowing from cathode to anode
XR beam quantity - (ANSWER)The product of tube current 7 exposure time is equal to
change the mAs from 15-21 mAs - (ANSWER)In order to increase radiographic film density by 40% the
radiographer would
directly proportional - (ANSWER)The relationship between mAs & exposure is
the reciprocity law - (ANSWER)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.
, LMRT CORE REVIEW | 2026 UPDATE | QUESTIONS AND ANSWERS | RATED 100% CORRECT
cause the electrons to travel faster from cathode to anode - (ANSWER)Increasing the kVp for an
exposure will
greater energy - (ANSWER)Increasing the energy of an incident electron will result in the production of
an XR photon with
radiographic film density - (ANSWER)Kilovoltage is the primary controlling factor of
contrast - (ANSWER)Adjustments in kVp should be used to control radiographic
kVp - (ANSWER)XR beam penetrability is primarily controlled by
400 mA, 200 ms, 40" SID - (ANSWER)All factor remaining constant, which of the following set of
exposure conditions would yield an image with GREATEST radiographic film density
motion - (ANSWER)The length of the exposure time (S) for a radiograph, is used to primarily control
400 mA,0.110 sec, 80 kVp - (ANSWER)A radiograph is taken 400 mA, 55 ms, 95 kVp. A second image
could be taken to improve contrast at
attenuation - (ANSWER)When an XR photon passes through matter, it undergoes a process called
reduce in number - (ANSWER)During the process of attenuation, XR photons in the beam
lead (Z=82) - (ANSWER)In which element are the inner-shell electrons more tightly bound to the
nucleus?
increase; decrease - (ANSWER)As the electron shells move farther from the nucleus, total electron
energies_ and binding energies_.
