Multiphoton Parallel Transmit MRI for Flip Angle Mitigation Without SAR Concerns
High-field magnetic resonance imaging (MRI) excitation performed using a standard birdcage volume coil suffers from a flip angle inhomogeneity problem. For example, in 7 T brain MRI, such an excitation has a flip angle as much as three-fold higher in the center of the head than near the periphery. T...
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| Format: | Thesis |
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Massachusetts Institute of Technology
2023
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| Online Access: | https://hdl.handle.net/1721.1/147305 |