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MRI ASRT test questions on all 12 modules questions and answers
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MRI ASRT test questions on all 12 modules questions and answers
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MRI ASRT test questions on all 12modules questions and answers
The iimost iicommon iitype iiof iimagnet iiused iiin iitoday's iiMR iisystems iiis iithe
ii_______________.
A. iiresistive iimagnet ii
B. iipermanent iimagnet
C. iisuperconducting iimagnet
D. iiopen iiMR iiscanner ii- iiCorrect iiAnswers ii-C. iisuperconducting iimagnet
The iipositively iicharged iipart iiof iian iiatom iiis iithe ii_____________.
A. iielectron
B. iineutron
C. iiproton
D. iinucleus ii- iiCorrect iiAnswers ii-C. iiproton
When iia iihydrogen iinucleus iiis iipositively iicharged iiand iispins, iiit iigenerates iia iismall
iimagnetic iifield iicalled iia ii_____________. ii
A. iilarmor iiequation
B. iidecay iimoment
C. iiproton iimoment ii
D. iimagnetic iimoment ii- iiCorrect iiAnswers ii-D. iimagnetic iimoment
When iiplaced iiin iian iiexternal iimagnetic iifield, iilow-energy iihydrogen iinuclei ii(protons)
iipoint iiin iithe ii____________ iidirection. ii
A. iiparallel
B. iiperpendicular
C. iiantiparallel
D. iirandom ii- iiCorrect iiAnswers ii-A. iiparallel
Which iiof iithe iifollowing iiis iiused iito iidescribe iithe iirelationship iibetween iithe iistatic
iimagnetic iifield iiand iithe iiprecessional iifrequency iiof iithe iihydrogen iiprotons?
,A. iiconcept iiof iiprecessing
B. iilarmor iiequation
C. iitheory iiof iimagnetism ii
D. iiMR iiequation ii- iiCorrect iiAnswers ii-B. iilarmor iiequation
What iiterm iidescribes iihydrogen iiprotons, iinuclei iirotating iiin iiunison?
A. iiout-of-phase iiprecession ii
B. iiin-phase iiprecession
C. iimagnetic iimoment ii
D. iinucleus iiof iiatoms ii- iiCorrect iiAnswers ii-B. iiin-phase iiprecession
This iiprocess iiof iiapplying iiRF iienergy iito iithe iipatient iiin iiorder iito iireceive iia iisignal
iifrom iithe iiprotons iiin iithe iibody iipart iibeing iiimaged iiis iiknown iias ii______________.
A. iialignment ii
B. iiresonance
C. iiprecession
D. iigyromagnetic iiratio ii- iiCorrect iiAnswers ii-B. iiresonance
Superconductive iiMR iiscanners iithat iiuse iicryogen iigases iihave iiwhat iikind iiof iifields? ii
A. iivertical ii
B. iilongitudinal ii
C. iihorizontal ii
D. iitransverse ii- iiCorrect iiAnswers ii-C. iihorizontal
Which iicoil iiis iilocated iicloses iito iithe iipatient? ii
A. iimagnet
B. iigradient
C. iishim ii
D. iiradiofrequency ii- iiCorrect iiAnswers ii-D. iiradiofrequency
When iiexposed iito iithe iimagnetic iifield, iia ii___________ iisubstance iidemonstrates iia
iinegative iimagnetic iisusceptibility, iiwhich iimeans iiit iiis iirepelled iiby iithe iimagnetic iifield. ii
A. iiferromagnetic ii
B. iiparamagnetic ii
C. iisuperparamagnetic ii
D. iidiamagnetic ii- iiCorrect iiAnswers ii-D. iidiamagnetic
Which iiof iithe iifollowing iiis iia iicharacteristic iiof iiultra-high iifield iimagnets? ii
A. iisignal-to-noise iiratios iiare iihigh iiand iifaster iiimaging iitimes iiare iipossible.
B. iithe iiscanner iihas iian iiopen iidesign iiand iilarge iigantry iiaperture
, C. iimagnetic iifringe iifields iiare iirelatively iismall
D. iiscanners iiare iilight iiand iiportable ii- iiCorrect iiAnswers ii-A. iisignal iito iinoise iiratios iiare
iihigh iiand iifaster iiimaging iitimes iiare iipossible
Which iitype iiof iimagnet iivaries iiin iifield iistrength iifrom ii0.5 iito ii1.4 iitesla ii(T)?
A. iiultra-high iifield ii
B. iihigh iifield ii
C. iimidfield ii
D. iilow iifield ii- iiCorrect iiAnswers ii-C. iimidfield
Which iiof iithe iifollowing iiis iian iiappropriate iiuse iiof iilow-field iimagnets?
A. iiorthopedic iistudies
B. iichemical iisaturation iiimaging ii
C. iineurovascular iistudies ii
D. iiintraoperative iiimaging ii- iiCorrect iiAnswers ii-A. iiorthopedic iistudies
Which iiis iithe iimost iicommon iielectromagnet iiconfiguration?
A. iipermanent ii
B. iiresistive
C. iisuperconducting ii
D. iiniche ii- iiCorrect iiAnswers ii-C. iisuperconducting
Which iiof iithe iifollowing iiis iia iidisadvantage iiof iisuperconducting iimagnets?
A. iihigh iioperational iicosts
B. iilow iifield iistrength ii
C. iiexpensive iito iipurchase ii
D. iivertical iimagnetic iifield ii- iiCorrect iiAnswers ii-C. iiexpensive iito iipurchase
The iimagnet iimust iibe iishimmed iibefore iiimaging iisequences iito:
A. iimatch iithe iiprecessional iifrequency iiof iihydrogen
B. iiincrease iithe iistrength iiof iithe iiradiofrequency iipulse
C. iicreate iia iiuniform iimagnetic iifield ii
D. iidecrease iithe iifringe iifield ii- iiCorrect iiAnswers ii-C. iicreate iia iiuniform iimagnetic iifield
The iilocation iiof iian iielectron iiexcited iiby iimagnetic iifields iiand iiradiofrequency iipulses
iican iibe iidetermined iiusing ii____________ iiand iian iix, iiy, iiz, iicoordinate iisystem. ii
A. iix-rays
B. iiwaveforms ii
C. iigradients ii
D. iimicrowaves ii- iiCorrect iiAnswers ii-C. iigradients
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