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| 2006 | Sanchez Lopez, H, Liu, F, Trakic, A. and Crozier, S (2006). A magnetization mapping approach for passive shim design in MRI. In: A. Dhawan, Proceedings of the 28th Annual IEEE Engineering in Medicine and Biology Society Annual International Conference. 28th Annual International Conference IEEE Engineering in Medicine and Biology Society, New York, USA, (1893-1896). 30 August - 3 September, 2006. |
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A new passive shim design method is presented which is based on a magnetization mapping approach. Well defined regions with similar magnetization values define the optimal number of passive shims, their shape and position. The new design method is applied in a shimming process without prior-axial shim localization; this reduces the possibility of introducing new errors. The new shim design methodology reduces the number of iterations and the quantity of material required to shim a magnet. Only a few iterations (1-5) are required to shim a whole body horizontal bore magnet with a manufacturing error tolerance larger than 0.1 mm and smaller than 0.5 mm. One numerical example is presented
| |  Dr Hector Sanchez Lopez, Mr Adnan Trakic, Associate Professor Feng Liu,  Professor Stuart Crozier | | eSpace Record: |
http://espace.library.uq.edu.au/view/UQ:104292
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| Keywords: | Design engineering, Magnetisation, Magnets, Manufacturing processes, Shims | | |
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