Chemical shift artifacts occur in which direction ?
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frequency-encoding
In a pulse sequence, the time can be calculated using which formula?
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TR x NEX x Matrix
A ___ reaction to contrast involves respiratory, cardiovascular, cutaneous, and possibly
gastrointestinal manifestations?
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Anaphylactoid
Which of the following will improve the resolution of an image ?
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increase the matrix size
Which of the following are important precautions when using a surface coil?
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restricted FOV, Positioning is critical and surface coil must be perp to XY
plane
Decay transverse magnetization is called ?
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spin-spin relaxation
When imaging the human body for clinical purposes in MRI, we are only interested in
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, H1
Which of the pulse sequnces listed uses inital RF pulse of less than 90.?
a. Fast GRE
b. GRE
c. 3DFT GRE
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GRE and 3DFT GRE
Because of in homogeneities in any Bo, the M vector will respond to B1 RF pulse) at:
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Larmor Frequency
A paramagnetic, rare earth substance, attached to a chelating ligand for MRI
enhancement purposes is:
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Gadolinium
The number of possible slices can be increased by:
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increasing the TR
Three components necessary for MRI on a very basic level are ?
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magnet, nuclei, radio wave
What sequence causes the worst susceptibility artifacts ?
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T2 weighted SE sequence
Originally, Magnetic Resonance Imaging was known by the name:
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Nuclear magnetic resonance
In order to display a DVT in the femoral area, presat pulses should be placed in which
direction?
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Give this one a try later!
frequency-encoding
In a pulse sequence, the time can be calculated using which formula?
Give this one a try later!
TR x NEX x Matrix
A ___ reaction to contrast involves respiratory, cardiovascular, cutaneous, and possibly
gastrointestinal manifestations?
,Give this one a try later!
Anaphylactoid
Which of the following will improve the resolution of an image ?
Give this one a try later!
increase the matrix size
Which of the following are important precautions when using a surface coil?
Give this one a try later!
restricted FOV, Positioning is critical and surface coil must be perp to XY
plane
Decay transverse magnetization is called ?
Give this one a try later!
spin-spin relaxation
When imaging the human body for clinical purposes in MRI, we are only interested in
Give this one a try later!
, H1
Which of the pulse sequnces listed uses inital RF pulse of less than 90.?
a. Fast GRE
b. GRE
c. 3DFT GRE
Give this one a try later!
GRE and 3DFT GRE
Because of in homogeneities in any Bo, the M vector will respond to B1 RF pulse) at:
Give this one a try later!
Larmor Frequency
A paramagnetic, rare earth substance, attached to a chelating ligand for MRI
enhancement purposes is:
Give this one a try later!
Gadolinium
The number of possible slices can be increased by:
, Give this one a try later!
increasing the TR
Three components necessary for MRI on a very basic level are ?
Give this one a try later!
magnet, nuclei, radio wave
What sequence causes the worst susceptibility artifacts ?
Give this one a try later!
T2 weighted SE sequence
Originally, Magnetic Resonance Imaging was known by the name:
Give this one a try later!
Nuclear magnetic resonance
In order to display a DVT in the femoral area, presat pulses should be placed in which
direction?
Give this one a try later!
