120 / 1116
e.g. DSV
40cm
= 0.2 ppm
(at 1.5 T):
0.2 x 63.87 MHz = 12.8 Hz
40 cm
Uniform imaging
volume
at isocentre
http://en.wikipedia.org/wiki/File:Finite_Length_So
lenoid_field_radius_1_length_1.jpg#/media/File:
Finite_Length_Solenoid_field_radius_1_length_
1.jpg
•
Magnet is shimmed at installation- additional (dynamic)
shimming may be required
Homogeneity
Off-centre
imaging?
RT Planning?