LMRT Core Review| 90 QUESTIONS| WITH COMPLETE SOLUTIONS

As a professional radiographer, the practice of ALARA requires you to correct answer: 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 correct answer: prime Milliamperage-second (mAs) directly affects all of the following EXCEPT correct answer: beam quality The factors that directly affect XR quantity are correct answer: mA & filtration The factors that directly affect XR quality are correct answer: 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 correct answer: 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? correct answer: 6.3 x 10(15) As the mA doubles, the number of electrons flowing from cathode to anode correct answer: increase 2-fold The product of tube current 7 exposure time is equal to correct answer: XR beam quantity In order to increase radiographic film density by 40% the radiographer would correct answer: change the mAs from 15-21 mAs The relationship between mAs & exposure is correct answer: 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. correct answer: the reciprocity law Increasing the kVp for an exposure will correct answer: cause the electrons to travel faster from cathode to anode Increasing the energy of an incident electron will result in the production of an XR photon with correct answer: greater energy Kilovoltage is the primary controlling factor of correct answer: radiographic film density Adjustments in kVp should be used to control radiographic correct answer: contrast XR beam penetrability is primarily controlled by correct answer: kVp