MULTIPLE ACQUISITION FAT-SATURATED BALANCED SSFPIMAGING

该子项目是利用 由NIH/NCRR资助的中心赠款提供的资源。子项目和 研究者（PI）可能从另一个NIH来源获得主要资金， 因此可以在其他CRISP条目中表示。列出的机构是 中心，不一定是研究者的机构。 虽然平衡SSFP（bSSFP）成像在其在短成像时间内产生高SNR的能力方面是有利的，但是由于几个众所周知的缺点，其临床应用受到限制。 来自脂肪的明亮信号通常是不需要的，并且避免条带伪影所需的短重复时间（TR）导致可实现的分辨率的限制。 在SAR考虑开始限制最小可能TR的较高场强下尤其如此。 为了解决这些问题，先前的方法已经将多个bSSFP采集与不同的线性增加的激励相位相结合，以减少信号随频率的变化（暗带）或抑制脂肪。 在这里，我们建议添加脂肪抑制多相位循环，3D bSSFP采集，同时解决这两个问题。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. While balanced-SSFP (bSSFP) imaging is advantageous in its ability to produce high SNR in short imaging times, its clinical application has been limited due to several well-known shortcomings. The bright signal from fat is typically unwanted, and the short repetition times (TRs) required to avoid banding artifacts lead to limitations in the achievable resolution. This is especially true at higher field strengths where SAR considerations begin to limit the minimum possible TRs. To address these problems previous methods have combined multiple bSSFP acquisitions with different linearly-increasing excitation phases to either reduce signal variations with frequency (dark bands) or suppress fat. Here we propose the addition of fat suppression to a multiple phase-cycled, 3D bSSFP acquisition to address both issues simultaneously.