The magnet field of an RF coil should be aligned at ________ degrees to B0 for maximum
signal.
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90
Shimming can be achieved by
1. small ferrous plates in a shim tray (passive)
2. shim coils (active)
3. using the gradients
4. using the RF
a. 1, 2 and 3
b. 1 and 3
c. 2 and 4
d. 1, 2, 3 and 4
, Give this one a try later!
A. 1,2,3
For a super conducting MR, the body coil is located between:
a. the patient and the gradient coil
b. the patient and the main magnet coils
c. the gradient and the main magnet coils
d. the patient and the x-ray tube and the image receptor
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A. the patient and the gradient coil
The specific absorption rate (SAR) has units of ___________.
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-W/kg
Scan time/slice = ____________ x _______________ x ______________
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TR(repitition time) x NEX x # Phase Encoding steps
signal.
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90
Shimming can be achieved by
1. small ferrous plates in a shim tray (passive)
2. shim coils (active)
3. using the gradients
4. using the RF
a. 1, 2 and 3
b. 1 and 3
c. 2 and 4
d. 1, 2, 3 and 4
, Give this one a try later!
A. 1,2,3
For a super conducting MR, the body coil is located between:
a. the patient and the gradient coil
b. the patient and the main magnet coils
c. the gradient and the main magnet coils
d. the patient and the x-ray tube and the image receptor
Give this one a try later!
A. the patient and the gradient coil
The specific absorption rate (SAR) has units of ___________.
Give this one a try later!
-W/kg
Scan time/slice = ____________ x _______________ x ______________
Give this one a try later!
TR(repitition time) x NEX x # Phase Encoding steps
