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Chapter 8-CAllegood

SWGTC Ch 8 Wallace- MAS and KVP relationships

QuestionAnswer
Exposure factor that determines the quality of the x-ray beam? KIilovoltage
The KVP that will be able to penetrate the body part, produce sufficient radiographic contrast, and produce an acceptable level of scattered radiation? Optimum KVP
A thick and dense body part, must be penetrated with a ____ kvp. high
A high contrast radiograph is produced with a KVP that is _____ than the optimum KVP. lower
A low contrast radiograph is produced with a kvp that is _____ than the optimum kvp. higher
________ KVP provides sufficient contrast. Optimum
The _______ determines how many electrons will be released by thermionic emission at the coathode of the x-ray tube. milliamperage
Exposure ____ determines how long the thermionic emission will take place. time
A variation in the _____ changes the energy of the photons in the beam. KVP
Range of acceptable exposure factors? exposure latitude
If the KVP is increased by 15%, the mas should be ______ by 2. divided
If the KVP is decreased by 15%, the mas should be _____ by 2. Multiplied
Gives the radiographer room for small errors. Exposure latitude
Multiply any KVP between 60 and 90 by 15% and the answer will fall between __ and __. 9; 13.5
In the 60 to 90 kvp range, a change of ___ KVP is equal to a ___% change. 10; 15
Created by: radtech