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Mapping and Shimming a 7T Whole Body Magnet
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MAPPING OF A 7T WHOLE BODY MRI MAGNET NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE, NIHJune 2003Special
thanks to
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Magnetic system |
Solenoid magnet, 900 mm ID, 7T field strength |
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Goals |
Raw magnet field mapping, SC and RT shim convergence |
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Data acquisition and analysis equipment |
FMU-1200 magnetic field mapping unit |
HOMOGENEITY CONTOURS
Before adjustment of SC and RT shims After adjustment of SC and RT shims
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MAGNETIC FIELD MAPS
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RAW MAGNET |
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AFTER ADJUSTMENT OF SC SHIMS |
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AFTER ADJUSTMENT OF RT SHIMS |
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