How well a material attracts the imaginary lines of the magnetic field is defined as:
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Magnetic permeability
Parameter ranges that would likely proved the best T2* image weighting when a
coherent GE pulse sequence is applied?
a) 20-50ms TR, 15-25 TE, 30-45 FLIP ANGLE
b) 5-10ms TR, 5-10 TE, 30-45 FLIP ANGLE
c) 200+ms TR, 20-30 TE, 45-60 FLIP ANGLE
d) <50ms TR, 200+ TE, 20-50 FLIP ANGLE
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, a) 20-50ms TR, 15-25 TE, 30-45 FLIP ANGLE
Coherent gradient echo sequences are typically used to obtain ____ weighted images.
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T2*
What formula is used to calculate the size of the VOXEL VOLUME?
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Pixel area x Slice thickness (cubed answer^3)
A set of specifically timed instructions to the magnet is known as:
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Pulse sequence:
A pulse sequence is a set of specifically timed instructions to the magnet
telling it how images should look with regards to the tissue being sampled
The primary biological effect of radiofrequency fields is
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, Tissue heating
Another name for a picture element is a
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Pixel
What QC test is preformed to assess the extent to which objects of low contrast are
detectable in an image?
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Contrast resolution
NORMAL GFR
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90ml/min/1.73m or higher
In one T2 relaxation time:
A. 63% of the transverse magnetization has decayed
B. 63% of the longitudinal magnetization has decayed
C. 37% of the longitudinal magnetization has decayed
D. None of the above
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Magnetic permeability
Parameter ranges that would likely proved the best T2* image weighting when a
coherent GE pulse sequence is applied?
a) 20-50ms TR, 15-25 TE, 30-45 FLIP ANGLE
b) 5-10ms TR, 5-10 TE, 30-45 FLIP ANGLE
c) 200+ms TR, 20-30 TE, 45-60 FLIP ANGLE
d) <50ms TR, 200+ TE, 20-50 FLIP ANGLE
Give this one a try later!
, a) 20-50ms TR, 15-25 TE, 30-45 FLIP ANGLE
Coherent gradient echo sequences are typically used to obtain ____ weighted images.
Give this one a try later!
T2*
What formula is used to calculate the size of the VOXEL VOLUME?
Give this one a try later!
Pixel area x Slice thickness (cubed answer^3)
A set of specifically timed instructions to the magnet is known as:
Give this one a try later!
Pulse sequence:
A pulse sequence is a set of specifically timed instructions to the magnet
telling it how images should look with regards to the tissue being sampled
The primary biological effect of radiofrequency fields is
Give this one a try later!
, Tissue heating
Another name for a picture element is a
Give this one a try later!
Pixel
What QC test is preformed to assess the extent to which objects of low contrast are
detectable in an image?
Give this one a try later!
Contrast resolution
NORMAL GFR
Give this one a try later!
90ml/min/1.73m or higher
In one T2 relaxation time:
A. 63% of the transverse magnetization has decayed
B. 63% of the longitudinal magnetization has decayed
C. 37% of the longitudinal magnetization has decayed
D. None of the above
