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kVp Measures Voltage, Potential Difference
mAs Measures Electric Current and Time
kVp Mainly Controls Penetration, Beam Quality
mAs Mainly Controls The Quantity of X-Ray Photons in the Primary Beam
Underexposed ________ : “I can see through it, but it's noisy” Low mAs
Underexposed __________ : “I can't see through it” Low kVp
Overexposed_________ : “Looks pretty normal, but there’s too much scatter” High kVp
Overexposed_____________ : Little visual indication (unless extreme – then saturation) High mAs
Underpenetrated – kVp is too Low
Overpenetrated – kVp is too High
_________ A measure of the rate at which energy is transferred from ionizing radiation to soft tissue Linear Energy Transfer (LET)
Linear Energy Transfer (LET) is the The average energy deposited per unit length of track
Linear Energy Transfer (LET) is based on the type of Ionizing Radiation
Beta, X-Rays, & Gamma Rays have _____ Low-LET
Alpha Radiation have _______ High-LET
As LET increases so does the________ Biologic Damage
Biologic damage escalates as LET of radiation _______ Increases
A measure of the ability of ionizing radiation to produce biologic damage Relative Biologic Effectiveness (RBE)
As kVp increases, what will happen to LET? Decrease
As LET increases, ________ RBE also increases
As more radiation is ______, the likelihood of biologic effects goes up Absorbed
mAs Stands For ______ Milliampere-Seconds
kVp Stands For ________ Kilovolt Peak
_______ is the number of photons in the primary beam Intensity
High kVp = More Transmission, Less Absorption
Created by: user-2016295
 

 



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