2017 Imaging for Physicists Coursebook
Homogeneity (Inside the Magnet)
Uniform imaging volume at isocentre
e.g. DSV 40cm
= 0.2 ppm
40 cm
(at 1.5 T): 0.2 x 63.87 MHz = 12.8 Hz
• Magnet is shimmed at installation- additional (dynamic) shimming may be required
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