a double echo, spin echo pulse sequence normally results in ____
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T2 and proton density weighted
rephasing is performed in spin echo by ____ and gradient echo by _____
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RF pulse; gradient
SAR is expressed in ____
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w/kg
the purpose of the 180 degree RF pulse in a inversion recovery pulse sequence is to:
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move the NMV into full staturation
which of the following magnets typically requires the highest on going cost for the
power supply?
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resistive
which of the following is the most accurate definition for the nyquist thereom?
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the highest frequency must be sampled at least 2x per cycle to accurately
digitize or represent it
the phase difference between flow and stationary nuclei in a voxel results in a loss of
signal amplitude.
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intra-voxel dehasing
to achieve a PD weighted image, the following events need to occur:
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long TR and a short TE
all the following are artifacts in MRI except
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beam hardening
______ reflects the relationship balance between spin up and spin down nuclei.
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net magnetification vector
while non-ferrous metallic implants may show little or no deflection to the field, they
could cause ____
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T2 and proton density weighted
rephasing is performed in spin echo by ____ and gradient echo by _____
Give this one a try later!
RF pulse; gradient
SAR is expressed in ____
,Give this one a try later!
w/kg
the purpose of the 180 degree RF pulse in a inversion recovery pulse sequence is to:
Give this one a try later!
move the NMV into full staturation
which of the following magnets typically requires the highest on going cost for the
power supply?
Give this one a try later!
resistive
which of the following is the most accurate definition for the nyquist thereom?
Give this one a try later!
the highest frequency must be sampled at least 2x per cycle to accurately
digitize or represent it
the phase difference between flow and stationary nuclei in a voxel results in a loss of
signal amplitude.
, Give this one a try later!
intra-voxel dehasing
to achieve a PD weighted image, the following events need to occur:
Give this one a try later!
long TR and a short TE
all the following are artifacts in MRI except
Give this one a try later!
beam hardening
______ reflects the relationship balance between spin up and spin down nuclei.
Give this one a try later!
net magnetification vector
while non-ferrous metallic implants may show little or no deflection to the field, they
could cause ____
Give this one a try later!
