Exam (elaborations)
MRSO PREP TEST 2 QUESTIONS AND ANSWERS
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MRSO PREP TEST 2 QUESTIONS AND ANSWERS
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Name: Score:403 Multiple choice questions
Term 1 of 403
_____ coil produces axial images
maxwell coil
solenoid coil
helical coil
toroidal coil
Term 2 of 403
Gradient coils are responsible for
torque, noise, pns
spatial magnetic gradient
tesla and gauss
electrically conductive
Term 3 of 403
the largest threat to our patients associated with the static magnetic field
transmetalization
increase
increase
decrease
magnetic spatial gradient
retained gad or gad deposition
,Term 4 of 403
What is the half wavelength for a 3T unit?
12 cm. (This is the length of an implant that can induce heating within it.)
codes should be performed in zone 2, patients should change in zone 2
magnet always on, line of sight, full stop and final check
1,2,3,4 (however they cannot escort patients into zone 4)
Term 5 of 403
normal mode= _____ degree celsius
1st level = ______ degree celsius
1/2
0/1
.5/1
2/1
Term 6 of 403
Energy dose per pt mass
ASTM
FDA
squared
SAR
Term 7 of 403
magnetohydrodynamic effect has to do with ___ magnetic field and ___
static, flow potential
dynamic, pressure difference
oscillating, thermal energy
constant, magnetic flux
,Term 8 of 403
A DBS without a generator threats
mt/m
translational force
shielding
heating/burning
Term 9 of 403
According to ACR, how often should policies be reviewed
dB/dx * B
Annually
tingling
squared
Term 10 of 403
can a BB put a patient @ risk with heating
Spatial magnetic gradient field, strength of the magnetic field, magnetic susceptibility
and mass of the object
no earplugs should still be given
yes, peak limit is 140 dB and 99dBA w/ ear protection
no, small and no sharp edges prevent RF depositing
Term 11 of 403
increase echo train length will ___ heating
eliminate
decrease
stabilize
increase
, Term 12 of 403
when a gad ion is lost in the body and another metal is picked up by ligand
fourier equation
tr coil
transmetalization
captain of the ship
Term 13 of 403
T1 shortening pre contrast from hx of multiple doses of gad are seen in
denote nucleus
globus pallidus
eddy currents
electrical fields
ferrous
Term 14 of 403
Will cause burning in insulated wires in or on a patient
more signal
proximity burning
resonant circuitry
electrical conductivity
Term 15 of 403
When RF energy is exposed to an object such as a wire lead or implanted device
antenna affect
stable chelated
electrically conductive
vertical
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