ARRTlMRIlExamlPrepl(NewlUpdate)l
QuestionslandlVerifiedlAnswers|lGradelA|l
100%lCorrect
QUESTION
Whichloflthelfollowinglhaslanleffectlonlthelresultinglslicelthickness?
a.lthelrangeloflfrequencieslencodedlinlthelecho
b.lthelrangeloflfrequencieslatlwhichlthelRFlenergylislapplied
c.lthelcenterloflfrequencyloflthelRFlpulse
d.lthelRFlfliplangle
Answer::
b.
QUESTION
Tolmakelanlobliquelimagelwhichlislorientedlatlanlanglelbetweenltransverselandlcoronal,lwhichl
oflthelfollowinglphysicallgradientslmustlbelappliedlforlslicelselection?
a.lzlandlyltogether
b.lylandlzltogether
c.lz
d.ly
Answer::
b.
QUESTION
Givenlthelsagittallimage,lwhichloflthelfollowinglstatementslislALWAYSltrue?
a.lfrequencylencodinglislaccomplishedlwithlthelxlgradient
b.lfrequencylencodinglwaslaccomplishedlwithlthelylandlzlgradientltogether
c.lthelfrequencylencodingldirectionlextendslfromlthelbottomltoltheltoploflthelimage
d.lslicelselectlwaslaccomplishedlwithlthelxlgradient
Answer::
d.
QUESTION
Thelfrequencylencodinglgradientlmustlbelturnedlonlduringlwhichloflthelfollowinglevents?
a.lphaselencoding
b.lspin-spinlinteractions
c.lapplicationloflRFlpulse
d.lreadoutloflthelecho
,Answer::
d.
QUESTION
WhichloflthelfollowinglstatementslislFALSE?
a.lgradientslarelresponsiblelforlensuringlthatlallloflthelprotonslinlthelbodylsimultaneouslylreceiv
elthelRFlenergy
b.lgradientslcauselthelprecessionallfrequencyloflprotonsltolvarylwithlposition
c.lgradientslappliedlinlanlequallbutloppositelfashionlcanlensurelthatlphaselwilllnotlaccumulate
d.lgradientsllinearlylvarylthelmagneticlfield
Answer::
a.
QUESTION
Decreasinglthelslicelselectlgradientlamplitudelwilllhavelwhatlaffectlonlthelresultinglsliceliflthel
RFltransmitterlbandwidthlislheldlconstant?
a.lchangelthelorientationloflthelslice
b.lchangelthelangleloflthelslice
c.lincreaselslicelthickness
d.linvertlthelphaselandlfrequencyldirections
Answer::
c.
QUESTION
Iflthelz-
gradientlislapplied,lwhichloflthelfollowinglstatementslislTRUElregardinglalpatient'slprotons?
a.lthoselinlthelpatient'slleftlhandlprecesslatlaldifferentlfrequencylthanlthoselinlthelpatient'slrightl
hand
b.lthoselinlthelpatient'slleftlearlprecesslatlaldifferentlfrequencylthanlthoseloflthelpatient'slrightlk
nee
c.lthosellocatedlanteriorlylinlthelpatient'slheadlprecesslatlaldifferentlfrequencylthanlthosellocate
dlmorelposteriorlylinlthelpatient'slhead
Answer::
b.
QUESTION
Onlalcoronallimage,liflfrequencylencodinglislaccomplishedlwithlthelz-
gradient,lwhichlphysicallgradientlislusedlforlphaselencoding?
a.ly
b.lylandlzltogether
,c.lx
d.lxlandlzltogether
Answer::
c.
QUESTION
Onlalsagittallimage,lwhichllogicallgradientlislassignedltolthelx-gradient?
a.lphaselencoding
b.lthelreadoutlgradient
c.lfrequencylencoding
d.lslicelselect
Answer::
d.
QUESTION
Thelphaselencodinglgradientlmustlbelturnedlonlduringlwhichloflthelfollowinglevents?
a.lpriorltolecholcollection,lbutlthelexactltiminglisntlcritical
b.lreadoutloflthelecho
c.lapplicationloflthelRFlenergy
d.lfrequencylencoding
Answer::
a.
QUESTION
Whatleffectlwilllanlappliedlgradientlhavelonlalpopulationloflstationarylin-
phaselprotonslwithinlal10cmlspherelatlthelcenterloflthelmagnet?
a.litlwilllhavelnolnetleffectlonlthelplane
b.litlwilllmovelthelmagnetizationloflprotonslintolthellongitudinalldirection
c.litlwilllmovelthelmagnetizationloflprotonslintoltheltransverselplane
d.litlwilllincreaselthelphaseldispersion
Answer::
d.
QUESTION
Whichloflthelfollowinglislcontainedlwithinlalsinglelspinlecho?
a.lthelanatomicallinformationlfromlalspecificllineloflthelresultinglimage
b.lmanylfrequencies
c.lthelanatomicallinformationlfromlallloflthelimageslinlthelscan
d.lmanylphases
, Answer::
b.
QUESTION
Iflalpopulationloflprotonslmoveslthroughlsomeldistancelduringltheltimelthelecholislbeinglsampl
ed,lwhatlwilllbelthelappearanceloflthelresultinglimage,lprovidedlthatlthelgradientslareloperatingl
properlylforlalsimplelspinlecholpulselsequence?
a.lartifactslwilllappearlinlthelfrequencyldirectionl
b.lthelimagelwilllbelunaffected
c.lartifactslwilllappearlinlthelphaseldirection
d.lthelimagelwilllbelinverted
Answer::
c.
motionlartifactlappearslinlthelphaseldirection
chemicallshiftlappearslinlfrequencyldirection
QUESTION
Iflalprotonlmovedlalongltheldirectionloflanlincreasinglgradient,litslrateloflprecessionlwould:
a.lincrease
b.lreverselinldirection
c.lstaylthelsame
d.ldecrease
Answer::
a.
QUESTION
AlgivenlMRlsystemlclaimslitslmaximumlgradientlamplitudelisl30mT/meter.lImaginelanlideallca
selinlwhichlthelfieldlstrengthlatlalllpointslinsidelthelmagnetlisl1.500lTesla.lIflalpulselsequenceld
riveslthelz-
gradientltolitslmaximumlamplitude,lthelfieldlstrengthlatlthelcenterloflthelmagnetlisl____lTesla.
a.l1.500lT
b.l1.510lT
c.l1.600lT
d.l1.490lT
Answer::
a.l
atlisocenter
QUESTION
QuestionslandlVerifiedlAnswers|lGradelA|l
100%lCorrect
QUESTION
Whichloflthelfollowinglhaslanleffectlonlthelresultinglslicelthickness?
a.lthelrangeloflfrequencieslencodedlinlthelecho
b.lthelrangeloflfrequencieslatlwhichlthelRFlenergylislapplied
c.lthelcenterloflfrequencyloflthelRFlpulse
d.lthelRFlfliplangle
Answer::
b.
QUESTION
Tolmakelanlobliquelimagelwhichlislorientedlatlanlanglelbetweenltransverselandlcoronal,lwhichl
oflthelfollowinglphysicallgradientslmustlbelappliedlforlslicelselection?
a.lzlandlyltogether
b.lylandlzltogether
c.lz
d.ly
Answer::
b.
QUESTION
Givenlthelsagittallimage,lwhichloflthelfollowinglstatementslislALWAYSltrue?
a.lfrequencylencodinglislaccomplishedlwithlthelxlgradient
b.lfrequencylencodinglwaslaccomplishedlwithlthelylandlzlgradientltogether
c.lthelfrequencylencodingldirectionlextendslfromlthelbottomltoltheltoploflthelimage
d.lslicelselectlwaslaccomplishedlwithlthelxlgradient
Answer::
d.
QUESTION
Thelfrequencylencodinglgradientlmustlbelturnedlonlduringlwhichloflthelfollowinglevents?
a.lphaselencoding
b.lspin-spinlinteractions
c.lapplicationloflRFlpulse
d.lreadoutloflthelecho
,Answer::
d.
QUESTION
WhichloflthelfollowinglstatementslislFALSE?
a.lgradientslarelresponsiblelforlensuringlthatlallloflthelprotonslinlthelbodylsimultaneouslylreceiv
elthelRFlenergy
b.lgradientslcauselthelprecessionallfrequencyloflprotonsltolvarylwithlposition
c.lgradientslappliedlinlanlequallbutloppositelfashionlcanlensurelthatlphaselwilllnotlaccumulate
d.lgradientsllinearlylvarylthelmagneticlfield
Answer::
a.
QUESTION
Decreasinglthelslicelselectlgradientlamplitudelwilllhavelwhatlaffectlonlthelresultinglsliceliflthel
RFltransmitterlbandwidthlislheldlconstant?
a.lchangelthelorientationloflthelslice
b.lchangelthelangleloflthelslice
c.lincreaselslicelthickness
d.linvertlthelphaselandlfrequencyldirections
Answer::
c.
QUESTION
Iflthelz-
gradientlislapplied,lwhichloflthelfollowinglstatementslislTRUElregardinglalpatient'slprotons?
a.lthoselinlthelpatient'slleftlhandlprecesslatlaldifferentlfrequencylthanlthoselinlthelpatient'slrightl
hand
b.lthoselinlthelpatient'slleftlearlprecesslatlaldifferentlfrequencylthanlthoseloflthelpatient'slrightlk
nee
c.lthosellocatedlanteriorlylinlthelpatient'slheadlprecesslatlaldifferentlfrequencylthanlthosellocate
dlmorelposteriorlylinlthelpatient'slhead
Answer::
b.
QUESTION
Onlalcoronallimage,liflfrequencylencodinglislaccomplishedlwithlthelz-
gradient,lwhichlphysicallgradientlislusedlforlphaselencoding?
a.ly
b.lylandlzltogether
,c.lx
d.lxlandlzltogether
Answer::
c.
QUESTION
Onlalsagittallimage,lwhichllogicallgradientlislassignedltolthelx-gradient?
a.lphaselencoding
b.lthelreadoutlgradient
c.lfrequencylencoding
d.lslicelselect
Answer::
d.
QUESTION
Thelphaselencodinglgradientlmustlbelturnedlonlduringlwhichloflthelfollowinglevents?
a.lpriorltolecholcollection,lbutlthelexactltiminglisntlcritical
b.lreadoutloflthelecho
c.lapplicationloflthelRFlenergy
d.lfrequencylencoding
Answer::
a.
QUESTION
Whatleffectlwilllanlappliedlgradientlhavelonlalpopulationloflstationarylin-
phaselprotonslwithinlal10cmlspherelatlthelcenterloflthelmagnet?
a.litlwilllhavelnolnetleffectlonlthelplane
b.litlwilllmovelthelmagnetizationloflprotonslintolthellongitudinalldirection
c.litlwilllmovelthelmagnetizationloflprotonslintoltheltransverselplane
d.litlwilllincreaselthelphaseldispersion
Answer::
d.
QUESTION
Whichloflthelfollowinglislcontainedlwithinlalsinglelspinlecho?
a.lthelanatomicallinformationlfromlalspecificllineloflthelresultinglimage
b.lmanylfrequencies
c.lthelanatomicallinformationlfromlallloflthelimageslinlthelscan
d.lmanylphases
, Answer::
b.
QUESTION
Iflalpopulationloflprotonslmoveslthroughlsomeldistancelduringltheltimelthelecholislbeinglsampl
ed,lwhatlwilllbelthelappearanceloflthelresultinglimage,lprovidedlthatlthelgradientslareloperatingl
properlylforlalsimplelspinlecholpulselsequence?
a.lartifactslwilllappearlinlthelfrequencyldirectionl
b.lthelimagelwilllbelunaffected
c.lartifactslwilllappearlinlthelphaseldirection
d.lthelimagelwilllbelinverted
Answer::
c.
motionlartifactlappearslinlthelphaseldirection
chemicallshiftlappearslinlfrequencyldirection
QUESTION
Iflalprotonlmovedlalongltheldirectionloflanlincreasinglgradient,litslrateloflprecessionlwould:
a.lincrease
b.lreverselinldirection
c.lstaylthelsame
d.ldecrease
Answer::
a.
QUESTION
AlgivenlMRlsystemlclaimslitslmaximumlgradientlamplitudelisl30mT/meter.lImaginelanlideallca
selinlwhichlthelfieldlstrengthlatlalllpointslinsidelthelmagnetlisl1.500lTesla.lIflalpulselsequenceld
riveslthelz-
gradientltolitslmaximumlamplitude,lthelfieldlstrengthlatlthelcenterloflthelmagnetlisl____lTesla.
a.l1.500lT
b.l1.510lT
c.l1.600lT
d.l1.490lT
Answer::
a.l
atlisocenter
QUESTION
