188 / 945
RF Coils: Signal Characteristics
2 2 4
2
2/3
2
0
a x
a I
B
SNR
Theoretical cylinder coils
Distance
a
surface coils
Finite Element Modelling used for
complicated designs
Surface Coil:
Excellent SNR
close to coil
Poor uniformity
Body Coil:
Poor SNR
Excellent
uniformity