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final exam

flash cards

QuestionAnswer
High kVp techniques reduce ____________. patient dose
Differential absorption in diagnostic imaging is primarily caused by ____________. pair production
The use of contrast agents increases the amount of ________________. differential absorption, Compton scatter and photoelectric absorption
An incident x-ray interacts with an atom without ionization during ______________. coherent scattering
Which x-ray interaction involves the ejection of the K-shell electron? Photoelectric absorption
The HVL is lowered by a decrease in ________. kVp
A compensating filter is used to create ________ exposure with a body part of _________ thickness. uniform; nonuniform
The half value layer (HVL) of an x-ray beam is a measurement of beam _______. energy
If filter thickness is ________, then x-ray intensity is ________. increased; reduced and reduced; increased
Image contrast is affected by ________. beam quality and kVp
Standard x-ray machines produce about _____ µGya/mAs at 70 kVp measured at 100 cm SID. 50
Grays, or milligrays, in air are the measurement for x-ray _________. quantity, exposure and intensity
The quantity of bremsstrahlung radiation increases proportionately with increased _____. mAs
An exposure taken at 100 kVp would have a continuous emission spectrum with a maximum energy of _____ keV. 100
An increase in mAs would _________ the ______________ of the emission spectrum. increase; amplitude alone
At the target, the projectile electrons interact with ____________. inner-shell and outer-shell electrons
The production of heat at the anode is directly proportional to _________. tube current
Created by: bighunt
 

 



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