What are the two main clinical causes of magnetic susceptibility artifact?
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Metal, and the iron content of a hemorrhage
A shallow phase encoding gradient will cause what type of phase shift between two
points along the gradient?
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Small
The time between consecutive R-waves is known as the
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R-R interval
A contrast reaction involving respiratory, cardiovascular, and cutaneous
manifestations (uticaria) is termed
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Anaphylactiod
What energy source imports heat into the body tissues causing them to heat up?
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Radiofrequency energy
What is the axis of the Cartesian coordinate system that is perpendicular to B0?
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The transverse plane
The ___________ arteries join at about the base of the pons to form the ___________________
artery.
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Vertebral, basilar
Which portion of the K-space contains high spatial resolution and low signal
amplitude?
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Outer portion
In the neck, the esophagus is located ____________ to the trachea
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Posteriorly
Name the event that involves a sudden loss of superconductivity resulting in the
vaporization of liquid cryogens
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A quench. The presence of gaseous cryogens within the scan room will
cause the displacement of oxygen, as well as cause a build up of pressure
within the scan room.
, A small flip angle, long TE, and short TR will produce what type of gradient echo
image contrast?
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T2*
Transverse magnetization that is left over from previous RF pulses in the steady state
condition is called
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Residual transverse magnetization
Truncation artifact is a result of
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Undersampling phase encodings. Truncation artifact will occur in the
frequency direction if the Nyquist Theorum is not obeyed.
What are the three areas of the brain stem (superior to inferior)?
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Metal, and the iron content of a hemorrhage
A shallow phase encoding gradient will cause what type of phase shift between two
points along the gradient?
Give this one a try later!
Small
The time between consecutive R-waves is known as the
,Give this one a try later!
R-R interval
A contrast reaction involving respiratory, cardiovascular, and cutaneous
manifestations (uticaria) is termed
Give this one a try later!
Anaphylactiod
What energy source imports heat into the body tissues causing them to heat up?
Give this one a try later!
Radiofrequency energy
What is the axis of the Cartesian coordinate system that is perpendicular to B0?
Give this one a try later!
The transverse plane
The ___________ arteries join at about the base of the pons to form the ___________________
artery.
,Give this one a try later!
Vertebral, basilar
Which portion of the K-space contains high spatial resolution and low signal
amplitude?
Give this one a try later!
Outer portion
In the neck, the esophagus is located ____________ to the trachea
Give this one a try later!
Posteriorly
Name the event that involves a sudden loss of superconductivity resulting in the
vaporization of liquid cryogens
Give this one a try later!
A quench. The presence of gaseous cryogens within the scan room will
cause the displacement of oxygen, as well as cause a build up of pressure
within the scan room.
, A small flip angle, long TE, and short TR will produce what type of gradient echo
image contrast?
Give this one a try later!
T2*
Transverse magnetization that is left over from previous RF pulses in the steady state
condition is called
Give this one a try later!
Residual transverse magnetization
Truncation artifact is a result of
Give this one a try later!
Undersampling phase encodings. Truncation artifact will occur in the
frequency direction if the Nyquist Theorum is not obeyed.
What are the three areas of the brain stem (superior to inferior)?
Give this one a try later!
