Joint design of kT-points trajectories and RF pulses under explicit SAR and power constraints in the large flip angle regime
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- 作者：Vincent Grasa ; Michel Luongb ; Alexis Amadona ; Nicolas Boulanta ; nicolas.boulant@cea.fr" class="auth_mail" title="E-mail the corresponding author
- 关键词：MRI ; Parallel transmission ; kT-points placement ; Optimization ; Large flip angle
- 刊名：Journal of Magnetic Resonance
- 出版年：2015
- 出版时间：December 2015
- 年：2015
- 卷：261
- 期：Complete
- 页码：181-189
- 全文大小：1938 K
文摘
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The simultaneous optimization of RF pulses and kT-points placement is performed.
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The non-linear flip angle regime is investigated.
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Hardware and specific absorption rate constraints are enforced explicitly.
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The method allows decreasing substantially the inhomogeneity of the excitation.
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The method is validated experimentally by using Quantum Process Tomography at 7T.