Split gradient coils for simultaneous PET-MRI

Michael Poole, Richard Bowtell, Dan Green, Simon Pittard, Alun Lucas, Rob Hawkes, Adrian Carpenter
2009 Magnetic Resonance in Medicine  
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
more » ... een 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 00:000-000, 2009.
doi:10.1002/mrm.22143 pmid:19780167 pmcid:PMC4304006 fatcat:uscxp34irrggfddsbargwopjcm