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STUDY GUIDE for ARMRIT exam, Exams of Radiography

Louisiana State University (LSU) - System OfficeRadiography

STUDY GUIDE for ARMRIT examSTUDY GUIDE for ARMRIT exam

Typology: Exams

2025/2026

Available from 12/04/2025

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STUDY |\ GUIDE |\ for |\ ARMRIT |\ exam |\
In |\a |\spin |\echo |\pulse |\sequence, |\which |\of |\the |\following |\
eliminates |\T2* |\effects |\by |\rephrasing |\the |\transverse |\
magnetization |\and |\producing |\the |\echo? |\- |\CORRECT |\
ANSWERS |\✔✔180-degree |\RF |\pulse
In |\a |\spin |\echo |\pulse |\sequence, |\a |\180-degree |\RF |\
refocusing |\pulse |\produces |\a |\signal |\echo |\and... |\- |\CORRECT
|\ANSWERS |\✔✔Eliminates |\rephrasing |\due |\to |\magnetic |\field
|\inhomogeneities
In |\an |\inversion |\recovery |\pulse |\sequence, |\the |\initial |\
excitation |\pulse |\drives |\the |\longitudinal |\magnetization |\
from |\+Z |\direction |\to |\which |\of |\the |\following |\directions? |\- |\
CORRECT |\ANSWERS |\✔✔-Z
Which |\of |\the |\following |\parameters |\will |\influence |\T1 |\
contrast |\in |\a |\GRE |\pulse |\sequence? |\- |\CORRECT |\ANSWERS |\
✔✔Flip |\angle
In |\a |\fast(Turbo) |\spin |\echo |\pulse |\sequence, |\the |\initial |\slice |\
excitation |\pulse |\is |\followed |\by |\a |\series |\of |\which |\of |\the |\
following? |\- |\CORRECT |\ANSWERS |\✔✔180 |\radio |\frequency |\
induced |\echoes
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STUDY|\GUIDE|\for|\ARMRIT|\exam|\

In |\a |\spin |\echo |\pulse |\sequence, |\which |\of |\the |\following |
eliminates |\T2* |\effects |\by |\rephrasing |\the |\transverse |
magnetization |\and |\producing |\the |\echo? |- |\CORRECT |
ANSWERS |\✔✔180-degree |\RF |\pulse In |\a |\spin |\echo |\pulse |\sequence, |\a |\180-degree |\RF |
refocusing |\pulse |\produces |\a |\signal |\echo |\and... |- |\CORRECT |\ANSWERS |\✔✔Eliminates |\rephrasing |\due |\to |\magnetic |\field |\inhomogeneities In |\an |\inversion |\recovery |\pulse |\sequence, |\the |\initial |
excitation |\pulse |\drives |\the |\longitudinal |\magnetization |
from |+Z |\direction |\to |\which |\of |\the |\following |\directions? |- |
CORRECT |\ANSWERS |\✔✔-Z Which |\of |\the |\following |\parameters |\will |\influence |\T1 |
contrast |\in |\a |\GRE |\pulse |\sequence? |- |\CORRECT |\ANSWERS |
✔✔Flip |\angle In |\a |\fast(Turbo) |\spin |\echo |\pulse |\sequence, |\the |\initial |\slice |
excitation |\pulse |\is |\followed |\by |\a |\series |\of |\which |\of |\the |
following? |- |\CORRECT |\ANSWERS |\✔✔ 180 |\radio |\frequency |
induced |\echoes

Which |\of |\the |\following |\is |\not |\an |\advantage |\of |
superconducting |\magnets? |- |\CORRECT |\ANSWERS |
✔✔Quick |\turn-off |\capability Superconducting |\magnet |\coils |\exhibit |\what |\type |\of |
resistance |\when |\operating |\at |\or |\below |\critical |
temperature? |- |\CORRECT |\ANSWERS |\✔✔Zero |\resistance In |\a |\permanent |\magnet |\design, |\which |\of |\the |\following |
best |\describes |\the |\direction |\of |\the |\main |\magnetic |\field? |- |
CORRECT |\ANSWERS |\✔✔Parallel |\to |\the |\long |\axis |\of |\a |\body |
in |\the |\magnet. What |\is |\the |\cryogen |\in |\a |\superconducting |\magnet? |- |
CORRECT |\ANSWERS |\✔✔Liquid |\helium Conductive |\copper |\windings |\that |\alter |\a |\main |\magnetic |
field |\along |\a |\strict |\coordinate |\are |\known |\as |\which |\of |\the |
following? |- |\CORRECT |\ANSWERS |\✔✔Gradient |\coils In |\an |\axial |\image, |\slice |\encoding |\is |\achieved |\through |
which |\of |\the |\following? |- |\CORRECT |\ANSWERS |\✔✔Z |
gradient

A |\phased |\array |\surface |\coil |\is |\a |\receiver |\system |\that |
utilizes |\several |\individual |\coils, |\which |\are |\connected |
directly |\to |\a |\dedicated... |- |\CORRECT |\ANSWERS |
✔✔Receiver The |\primary |\advantage |\of |\a |\phased |\array |\coil |\is |\that |\it |
provides |\the |\following |\coverage |\of |\an |\individual |\larger |
coil |\and |\which |\of |\the |\following |\characteristics |\of |\an |
individual |\smaller |\coil? |- |\CORRECT |\ANSWERS |\✔✔SNR: |
Signal-to-noise |\ratio Selecting |\a |\larger |\coil |\for |\use |\on |\a |\smaller |\field |\of |\view |
will |\increase |\sensitivity |\to |\which |\of |\the |\following? |- |
CORRECT |\ANSWERS |\✔✔Artifacts |\and |\aliasing Which |\type |\of |\hardware |\is |\responsible |\for |\the |
homogeneity |\of |\the |\magnetic |\field? |- |\CORRECT |\ANSWERS |\✔✔Shim |\coils How |\is |\the |\homogeneity |\of |\the |\main |\magnetic |\field |
measured? |- |\CORRECT |\ANSWERS |\✔✔Parts |\per |
million(PPM) Shim |\coils |\are |\small |\electro |\or |\permanent |\magnets |\that |
are |\best |\characterized |\by |\which |\of |\the |\following |\

descriptions? |- |\CORRECT |\ANSWERS |\✔✔Adjustments |\to |
correct |\for |\inhomogeneities |\of |\the |\B0 |\magnetic |\field Which |\of |\the |\following |\causes |\thermal |\injuries |\in |\the |\MRI |
suite? |- |\CORRECT |\ANSWERS |\✔✔RF |\Pulses: |\Radio |
Frequency |\Pulses An |\increase |\of |\which |\of |\the |\following |\does |\not |\increase |
the |\specific |\absorption |\rate |\in |\a |\pulse |\sequence? |- |
CORRECT |\ANSWERS |\✔✔RBW: |\Receiver |\bandwidth What |\are |\the |\FDA |\maximum |\limits |\for |\specific |\absorption |
rates? |- |\CORRECT |\ANSWERS |\✔✔A |\whole |\body |\4.0 |\w/kg |
and |\head |\3.2 |\w/kg Specific |\absorption |\rate |\measures |\the |\delivery |\of |\which |\of |\the |\following |\to |\the |\body |\during |\an |\MRI |\exam? |- |
CORRECT |\ANSWERS |\✔✔Radio |\Frequency |\energy |
deposition In |\MRI, |\the |\specific |\absorption |\rate |\is |\calculated |\using |
which |\of |\the |\following |\units |\of |\measurement? |- |\CORRECT |
ANSWERS |\✔✔Watts |\per |\kilogram