LMRT Core Exam Question and Answers Best Rated A+

LMRT Core Exam Question and Answers Best Rated A+ 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 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