LMRT Core Exam
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mA & filtration - CORRECT ANSWER-The factors that directly affect XR quantity are
kVp &
... [Show More] beam filtration - CORRECT ANSWER-The factors that directly affect XR quality are
3,145,728 - CORRECT ANSWER-A matrix of size 2048 x 1536 would have_ pixels
4 - CORRECT ANSWER-If the digital FOV is 1024 & the display matrix is 256, the pixel size would be
pixel size - CORRECT ANSWER-In digital imaging, the limiting factor in spatial resolution is the
256 - CORRECT ANSWER-A pixel that has an 8-bit depth displays_ shades of gray
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
the reciprocity law - CORRECT 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.
cause the electrons to travel faster from cathode to anode - CORRECT ANSWER-Increasing the kVp for an exposure will
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
greater energy - CORRECT ANSWER-Increasing the energy of an incident electron will result in the production of an XR photon with
radiographic film density - CORRECT ANSWER-Kilovoltage is the primary controlling factor of
contrast - CORRECT ANSWER-Adjustments in kVp should be used to control radiographic
kVp - CORRECT ANSWER-XR beam penetrability is primarily controlled by [Show Less]