首页>
外国专利>
Local SAR reduction in multi-slice pTx via SAR-hopping between excitations
Local SAR reduction in multi-slice pTx via SAR-hopping between excitations
展开▼
机译:通过激励之间的SAR跳跃实现多层pTx的局部SAR降低
展开▼
页面导航
摘要
著录项
相似文献
摘要
Described here are a system and method for designing radio frequency (“RF”) pulses for parallel transmission (“pTx”) applications, and particularly pTx applications in multislice magnetic resonance imaging (“MRI”). The concept of “SAR hopping” is implemented by framing the concept between slice-selective excitations as a constrained optimization problem that attempts designing multiple pulses simultaneously subject to an overall local SAR constraint. This results in the set of RF waveforms that yield the best excitation profiles for all pulses while ensuring that the local SAR of the average of all pulses is below the regulatory limit imposed by the FDA. Pulses are designed simultaneously while constraining local SAR, global SAR, and peak power, and average power explicitly.
展开▼