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Split gradient coils for simultaneous PET-MRI

✍ Scribed by Michael Poole; Richard Bowtell; Dan Green; Simon Pittard; Alun Lucas; Rob Hawkes; Adrian Carpenter

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
299 KB
Volume
62
Category
Article
ISSN
0740-3194

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Combining positron emission tomography (PET) and MRI necessarily involves an engineering tradeoff as the equipment needed for the two modalities vies for the space closest to the region where the signals originate. In one recently described scanner configuration for simultaneous positron emission tomography–MRI, the positron emission tomography detection scintillating crystals reside in an 80‐mm gap between the 2 halves of a 1‐T split‐magnet cryostat. A novel set of gradient and shim coils has been specially designed for this split MRI scanner to include an 110‐mm gap from which wires are excluded so as not to interfere with positron detection. An inverse boundary element method was necessarily employed to design the three orthogonal, shielded gradient coils and shielded Z0 shim coil. The coils have been constructed and tested in the hybrid positron emission tomography‐MRI system and successfully used in simultaneous positron emission tomography‐MRI experiments. Magn Reson Med, 2009. © 2009 Wiley‐Liss, Inc.

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