COMPUTED TOMOGRAPHY TEST PREP
QUESTIONS AND ANSWERS
When ucompleting ua uCT uexam ufor upost umyelogram uof uthe ulumbar uspine uin uan
uadult upatient, uwhich uof uthe ufollowing uwould ube uan uacceptable urange ufor ucontrast
uvolume ufor uthe uintrathecal uinjection? u- ucorrect uanswers u-12 uto u14ml
Small uchildren uundergoing uCT uexams uare ucommonly usedated uwith uthe
umedication u________. u- ucorrect uanswers u-Chloral uhydrate
Disassociating uinto ucharged uparticles uwhen uplaced uinto ua usolution uis uthe uterm
ugiven uto u______ ucontrast umaterial. u- ucorrect uanswers u-Ionic
The uuse uof unon-ionic uvs. uionic ucontrast umedia ushould ube ubased uon? u- ucorrect
uanswers u-1. uage uand uphysical ucondition uof upatient
2. uallergic uhistory uof uthe upatient
, Due uto uthe udensity, ubarium usulfate ususpensions uused ufor uCT uexams umust ube ua
uconcentration uof? u- ucorrect uanswers u-1% uto u3% ubarium usulfate
The unumber uof uions uformed uwhen ua usubstance udissociates uin ua usolution uis
ureferred uto uas u___________. u- ucorrect uanswers u-Osmolality
The uadvantages uof ua uhelical uCt uwhen ucompared uto uconventional uCT uscanning
uis/are? u- ucorrect uanswers u-1. ureduces umisregistation uartifacts
2. ureduces uscan utime
The ubest ueval uof ucoronary uartery udisease uwhich uof uthe ufollowing utypes uof uct
uscanners ushould ube uused? u- ucorrect uanswers u-Electron uBeam uScanner
The uadvantages uof uusing uan uautomatic upower uinjector uversus uthe umanuel ubolus
umethod uof uIV ucontrast uadministration uincludes? u- ucorrect uanswers u--uniform
ucontrast uadmin uthrough uentire ulength uof ustudy
-increased utissue uenhancement udue uto uthe ufast uinjection urates
The uflow urate ufor ua ubiphasic utech, ufor ua uspiral uCT ustudy uof uthe uliver uwould
uinclude? u- ucorrect uanswers u-3ml/s ufor u50ml ufollowed uby u1.5 uml/s ufor u100ml
Reference udetectors uof u3rd ugeneration uare uused uto? u- ucorrect uanswers u-Measure
uthe uincident uradiation uintensity uand uare uused uby uthe ucomputer uduring
ucalculation uof uthe ulinear uattenuation ucoefficient.
The urecon. uby uthe ucomputer uof ua uCT uimage ureceived ufrom uthe utransmission
usignal uproduced uby uthe udetectors umust ube uconverted uinto unumeric uinformation
uby uwhat? u- ucorrect uanswers u-Analog-to-digital uconvertor
________ ucan ube uused uto umeasure uslice uthickness, unoise uand ucontrast
uresolution. u- ucorrect uanswers u-Phantoms
When uperforming ua uhigh-resolution uchest uCT uwhich uof uthe ufollowing uprotocols
ushould ube uused? u- ucorrect uanswers u-1.0mm usections, ubone ualgorithm
Slice uthickness uis ugoverned uby uthe u? u- ucorrect uanswers u-smallest usingle
udetector uelement
Instructions ufor ua upt ujust ucompleting uan uintrathecal uinjection uof uIV ucontrast ufor ua
upost-myelographic uCT ustudy uof uthe ulumbar uspine uincludes? u- ucorrect uanswers u-
Rest ufor u8 uto u24 uhours uwith uhead uelevated
Once uthe ux-ray ubeam upasses uthrough uan uobject uthe uintensity uof uthe ubeam uto ua
udetector uis ucalled u? u- ucorrect uanswers u-Transmitted uintensity
QUESTIONS AND ANSWERS
When ucompleting ua uCT uexam ufor upost umyelogram uof uthe ulumbar uspine uin uan
uadult upatient, uwhich uof uthe ufollowing uwould ube uan uacceptable urange ufor ucontrast
uvolume ufor uthe uintrathecal uinjection? u- ucorrect uanswers u-12 uto u14ml
Small uchildren uundergoing uCT uexams uare ucommonly usedated uwith uthe
umedication u________. u- ucorrect uanswers u-Chloral uhydrate
Disassociating uinto ucharged uparticles uwhen uplaced uinto ua usolution uis uthe uterm
ugiven uto u______ ucontrast umaterial. u- ucorrect uanswers u-Ionic
The uuse uof unon-ionic uvs. uionic ucontrast umedia ushould ube ubased uon? u- ucorrect
uanswers u-1. uage uand uphysical ucondition uof upatient
2. uallergic uhistory uof uthe upatient
, Due uto uthe udensity, ubarium usulfate ususpensions uused ufor uCT uexams umust ube ua
uconcentration uof? u- ucorrect uanswers u-1% uto u3% ubarium usulfate
The unumber uof uions uformed uwhen ua usubstance udissociates uin ua usolution uis
ureferred uto uas u___________. u- ucorrect uanswers u-Osmolality
The uadvantages uof ua uhelical uCt uwhen ucompared uto uconventional uCT uscanning
uis/are? u- ucorrect uanswers u-1. ureduces umisregistation uartifacts
2. ureduces uscan utime
The ubest ueval uof ucoronary uartery udisease uwhich uof uthe ufollowing utypes uof uct
uscanners ushould ube uused? u- ucorrect uanswers u-Electron uBeam uScanner
The uadvantages uof uusing uan uautomatic upower uinjector uversus uthe umanuel ubolus
umethod uof uIV ucontrast uadministration uincludes? u- ucorrect uanswers u--uniform
ucontrast uadmin uthrough uentire ulength uof ustudy
-increased utissue uenhancement udue uto uthe ufast uinjection urates
The uflow urate ufor ua ubiphasic utech, ufor ua uspiral uCT ustudy uof uthe uliver uwould
uinclude? u- ucorrect uanswers u-3ml/s ufor u50ml ufollowed uby u1.5 uml/s ufor u100ml
Reference udetectors uof u3rd ugeneration uare uused uto? u- ucorrect uanswers u-Measure
uthe uincident uradiation uintensity uand uare uused uby uthe ucomputer uduring
ucalculation uof uthe ulinear uattenuation ucoefficient.
The urecon. uby uthe ucomputer uof ua uCT uimage ureceived ufrom uthe utransmission
usignal uproduced uby uthe udetectors umust ube uconverted uinto unumeric uinformation
uby uwhat? u- ucorrect uanswers u-Analog-to-digital uconvertor
________ ucan ube uused uto umeasure uslice uthickness, unoise uand ucontrast
uresolution. u- ucorrect uanswers u-Phantoms
When uperforming ua uhigh-resolution uchest uCT uwhich uof uthe ufollowing uprotocols
ushould ube uused? u- ucorrect uanswers u-1.0mm usections, ubone ualgorithm
Slice uthickness uis ugoverned uby uthe u? u- ucorrect uanswers u-smallest usingle
udetector uelement
Instructions ufor ua upt ujust ucompleting uan uintrathecal uinjection uof uIV ucontrast ufor ua
upost-myelographic uCT ustudy uof uthe ulumbar uspine uincludes? u- ucorrect uanswers u-
Rest ufor u8 uto u24 uhours uwith uhead uelevated
Once uthe ux-ray ubeam upasses uthrough uan uobject uthe uintensity uof uthe ubeam uto ua
udetector uis ucalled u? u- ucorrect uanswers u-Transmitted uintensity
