ARRT MRI registry review exam 2024 with
g g g g g g g
100% correct answers
g g
AngRFgpulsegofgwhatgflipganglegwillgmaximizegthegcomponentgofgthegnetgmagnetizationgprojectedgintogt
hegtransversegplane?
a.g180
b.g120
c.g90
d.g45g-ggcorrectganswerggc.
T1grelaxationgrefersgtog____grelaxation.
a.gspin-spin
b.glongitudinal
c.gphase
d.gtransverseg-ggcorrectganswerggb.
Whichgofgthegfollowinggstatementsgisgfalse?
a.gT1grelaxationgrefersgtoglongitudinalgrecoverygofgmagnetizationgwhilegT2grelaxationgrefersgtogthegtran
sversegdecaygofgmagnetization
b.gT1grelaxationgandgT2grelaxationgoccurgsimultaneouslyg
c.gechoesgcollectedgingthegtransversegplanegdemonstrategonlygT2grelaxationgdifferences
d.gT2grelaxationgoccursgmuchgmoregquicklygthangT1grelaxationg-ggcorrectganswerggc.
Ifgthegprecessionalgfrequencygofgthegpatient'sgprotonsgisgapproximatelyg21gMHz,gwhatgmagneticgfieldgst
rengthgisgbeinggexperiencedgbygthegpatientsgprotons?g-ggcorrectganswerggLarmorgfrequencygequation
,W0=gB0gxgY
21=g42.6gxg(X)
21/42.6g=g.4929g(round)g=g0.5T
WhichgofgthegfollowinggisgthegdefinitiongofgT1grelaxation?
a.gthegtimegisgtakesgthegnetglongitudinalgmagnetizationgofgprotonsgtoggrowg63%gofgitsgfinalgamplitude
b.gthegtimegatgwhichgisgtakesgthegtransversegmagnetizationghasgdecayedg63%gofgitsgfullgvalueg-
ggcorrectganswergga.
Basedgongtheggraphgofglongitudinalgrelaxationgshowngabove,gwhichgofgthegfollowinggwouldghavegthegbri
ghtestgsignalgintensitygongT1gimage?
a.gbonegmarrow
b.gintervertebralgdisk
c.gCSF
d.gmuscle
(postgtestg1;gpageg1)g-ggcorrectganswergga.
Basedgongtheggraphgofglongitudinalgrelaxationgshowngabove,gwhichgofgthegfollowinggwouldghavegthegsh
ortestgT1grelaxationgtime?
a.gbonegmarrow
b.gintervertebralgdisk
c.gCSF
d.gmuscle
,(postgtestg1;gpageg1)g-ggcorrectganswergga.
ThegedemagassociatedgwithgpathologygingthegbrainghasgagmuchglongergT2grelaxationgtimegthangsurroun
dinggnormalgbraingtissue.gOngagT2gimage,gwhatgdoesgthisgresultgin?
a.gisointensegbetweengedemagandgsurroundinggnormalgbraingtissue
b.gaglowgsignalgintensitygingthegareagofgedema
c.gagsignalgvoidgingthegareagofgedemag
d.gaghighgsignalgintensitygingthegareagofgedemag-ggcorrectganswerggd.
Whichgofgthegfollowinggdephasinggmechanismsgaffectsgthegsizegofgthegresultinggspingecho?
a.gmagneticgfieldginhomogenities
b.gphasegeffectsgofgchemicalgshift
c.gmagneticgsusceptibility
d.gspin-spinginteractionsg-ggcorrectganswerggd.
Aftergag90gRFgpulse,gifgthreeg180gRFgpulsesgaregappliedgtoggenerategthreegechoes,gwhichgofgthegfollowi
nggisgresponsiblegforgthegthirdgechogbeinggmuchgsmallergthangthegfirstgecho?
a.gmagneticgfieldginhomogenities
b.gphasegeffectsgofgchemicalgshift
c.gmagneticgsusceptibility
d.gspin-spinginteractionsg-ggcorrectganswerggd.
ThegMRgechogisgNOT:
a.gdetectedgasgmagneticgchangesgthatginducegvoltagegintogangRFgcoil
, b.gcollectedgwhengthegmagnetizationgingthegtransversegplaneghasgbeengrephased
c.gagtinygsignalgcontaininggcontrastginfo.gnecessarygforgtissuegdifferentiation
d.gcollectedgonlygonegtimegforgaggivengimageg-ggcorrectganswerggd.
WhatgisgthegtimegfromgtheginitialgRFgexcitationgpulsegtogthegechogcalled?
a.gTE
b.gTI
c.gTM
d.gTRg-ggcorrectganswergga.
Thegproton'sg____gcontributesgtogitsgmagneticgproperties.
1.gspinninggmotion
2.gpositivegchange
3.gmassg-ggcorrectganswergg1.gandg2.
WhichgofgthegfollowinggisgTRUEgregardinggtheghydrogengprotonsgingagpatient'sgbodygwhengplacedgingth
egmagnetgofgangMRgsystem?
a.gmoregprotonsgaligngwithgthegmaingmagneticgfieldgthangagainstgthegmaingmagneticgfield
b.gmoregprotonsgaligngagainstgthegmaingmagneticgfieldgthangwithgthegmaingmagneticgfield
c.gequalgnumbersgofgprotonsgaligngagainstgthegmaingmagneticgfield
d.gallgofgthegprotonsglinegupgperpendiculargtogthegmaingmagneticgfieldg-ggcorrectganswergga.
OngagT2gimage,gCSFgappearsgbrightgbecausegitghasgag____grelaxationgtime.
a.glonggT2
b.gshortgT2g-ggcorrectganswergga.
g g g g g g g
100% correct answers
g g
AngRFgpulsegofgwhatgflipganglegwillgmaximizegthegcomponentgofgthegnetgmagnetizationgprojectedgintogt
hegtransversegplane?
a.g180
b.g120
c.g90
d.g45g-ggcorrectganswerggc.
T1grelaxationgrefersgtog____grelaxation.
a.gspin-spin
b.glongitudinal
c.gphase
d.gtransverseg-ggcorrectganswerggb.
Whichgofgthegfollowinggstatementsgisgfalse?
a.gT1grelaxationgrefersgtoglongitudinalgrecoverygofgmagnetizationgwhilegT2grelaxationgrefersgtogthegtran
sversegdecaygofgmagnetization
b.gT1grelaxationgandgT2grelaxationgoccurgsimultaneouslyg
c.gechoesgcollectedgingthegtransversegplanegdemonstrategonlygT2grelaxationgdifferences
d.gT2grelaxationgoccursgmuchgmoregquicklygthangT1grelaxationg-ggcorrectganswerggc.
Ifgthegprecessionalgfrequencygofgthegpatient'sgprotonsgisgapproximatelyg21gMHz,gwhatgmagneticgfieldgst
rengthgisgbeinggexperiencedgbygthegpatientsgprotons?g-ggcorrectganswerggLarmorgfrequencygequation
,W0=gB0gxgY
21=g42.6gxg(X)
21/42.6g=g.4929g(round)g=g0.5T
WhichgofgthegfollowinggisgthegdefinitiongofgT1grelaxation?
a.gthegtimegisgtakesgthegnetglongitudinalgmagnetizationgofgprotonsgtoggrowg63%gofgitsgfinalgamplitude
b.gthegtimegatgwhichgisgtakesgthegtransversegmagnetizationghasgdecayedg63%gofgitsgfullgvalueg-
ggcorrectganswergga.
Basedgongtheggraphgofglongitudinalgrelaxationgshowngabove,gwhichgofgthegfollowinggwouldghavegthegbri
ghtestgsignalgintensitygongT1gimage?
a.gbonegmarrow
b.gintervertebralgdisk
c.gCSF
d.gmuscle
(postgtestg1;gpageg1)g-ggcorrectganswergga.
Basedgongtheggraphgofglongitudinalgrelaxationgshowngabove,gwhichgofgthegfollowinggwouldghavegthegsh
ortestgT1grelaxationgtime?
a.gbonegmarrow
b.gintervertebralgdisk
c.gCSF
d.gmuscle
,(postgtestg1;gpageg1)g-ggcorrectganswergga.
ThegedemagassociatedgwithgpathologygingthegbrainghasgagmuchglongergT2grelaxationgtimegthangsurroun
dinggnormalgbraingtissue.gOngagT2gimage,gwhatgdoesgthisgresultgin?
a.gisointensegbetweengedemagandgsurroundinggnormalgbraingtissue
b.gaglowgsignalgintensitygingthegareagofgedema
c.gagsignalgvoidgingthegareagofgedemag
d.gaghighgsignalgintensitygingthegareagofgedemag-ggcorrectganswerggd.
Whichgofgthegfollowinggdephasinggmechanismsgaffectsgthegsizegofgthegresultinggspingecho?
a.gmagneticgfieldginhomogenities
b.gphasegeffectsgofgchemicalgshift
c.gmagneticgsusceptibility
d.gspin-spinginteractionsg-ggcorrectganswerggd.
Aftergag90gRFgpulse,gifgthreeg180gRFgpulsesgaregappliedgtoggenerategthreegechoes,gwhichgofgthegfollowi
nggisgresponsiblegforgthegthirdgechogbeinggmuchgsmallergthangthegfirstgecho?
a.gmagneticgfieldginhomogenities
b.gphasegeffectsgofgchemicalgshift
c.gmagneticgsusceptibility
d.gspin-spinginteractionsg-ggcorrectganswerggd.
ThegMRgechogisgNOT:
a.gdetectedgasgmagneticgchangesgthatginducegvoltagegintogangRFgcoil
, b.gcollectedgwhengthegmagnetizationgingthegtransversegplaneghasgbeengrephased
c.gagtinygsignalgcontaininggcontrastginfo.gnecessarygforgtissuegdifferentiation
d.gcollectedgonlygonegtimegforgaggivengimageg-ggcorrectganswerggd.
WhatgisgthegtimegfromgtheginitialgRFgexcitationgpulsegtogthegechogcalled?
a.gTE
b.gTI
c.gTM
d.gTRg-ggcorrectganswergga.
Thegproton'sg____gcontributesgtogitsgmagneticgproperties.
1.gspinninggmotion
2.gpositivegchange
3.gmassg-ggcorrectganswergg1.gandg2.
WhichgofgthegfollowinggisgTRUEgregardinggtheghydrogengprotonsgingagpatient'sgbodygwhengplacedgingth
egmagnetgofgangMRgsystem?
a.gmoregprotonsgaligngwithgthegmaingmagneticgfieldgthangagainstgthegmaingmagneticgfield
b.gmoregprotonsgaligngagainstgthegmaingmagneticgfieldgthangwithgthegmaingmagneticgfield
c.gequalgnumbersgofgprotonsgaligngagainstgthegmaingmagneticgfield
d.gallgofgthegprotonsglinegupgperpendiculargtogthegmaingmagneticgfieldg-ggcorrectganswergga.
OngagT2gimage,gCSFgappearsgbrightgbecausegitghasgag____grelaxationgtime.
a.glonggT2
b.gshortgT2g-ggcorrectganswergga.
