Split gradient coils for simultaneous PET-MRI
| Autor: | Richard Bowtell, Alun J. Lucas, R. C. Hawkes, Michael Poole, Dan Green, Simon Pittard, Adrian Carpenter |
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| Rok vydání: | 2009 |
| Předmět: |
Cryostat
Scanner Materials science medicine.diagnostic_test business.industry Astrophysics::High Energy Astrophysical Phenomena Physics::Medical Physics Shim (magnetism) law.invention Positron Nuclear magnetic resonance Optics law Positron emission tomography Electromagnetic coil Shielded cable medicine Physics::Accelerator Physics Radiology Nuclear Medicine and imaging Positron emission business |
| Zdroj: | Magnetic Resonance in Medicine. 62:1106-1111 |
| ISSN: | 0740-3194 |
| DOI: | 10.1002/mrm.22143 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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