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1.mWhichmofmthemfollowingmismtruemregardingmmagneticmfieldmstrengthmduringmthemapplicationmofm
amgradient?
m A.mItmchangesmmoremrapidlymwithmincreasingmdistancemfrommisocenter
m B.mThemdegreemofmchangemismgreatermtowardsmthempatientsmhead
m C.mApplyingmamgradientmpermanentlymaltersmthemmagneticmfieldm(YoumAnsweredmIncorrectly)
m D.mThemmagneticmfieldmremainsmunchangedmatmthemisocenterm-mCORRECTmANSWERm
3.mInmamtypicalmsituationmwheremdataismbeingmacquired,mthemtechnologistmcanmexpectmamlongermsc
anmtimemwithmwhichmofmthemfollowing:
A.mFewermnumbermofmsignalmaveragesm
B.mShallowermphasemencodingmslopem
C.mLongermtimemtomrepetitionm(TR)m
D.mShortermtimemtomechom(TE)m-mCORRECTmANSWERmC.mLongermtimemtomrepetitionm(TR)
5.mAsmamtechnologist,myoumaremawaremofmthemfactmthatmMRImsystemsmmapmsignalmfrequenciesmbas
edmonmthemprecessionalmfrequencymofmwater.mThembodymalsomcontainsmfat,mandmthesemspinsmmaym
bemmappedmincorrectly.mWhatmphysicalmmechanismmismresponsiblemformcausingmthismartefact?