ANALYSIS & CORRECTION OF SPURIOUS ECHO & PHASE ENCODING ARTIFACTS IN FSE

目前在该中心获得的FSE图像包含重要的 杂散信号(除主自旋回波外的所有信号) 回声。因为这些回声的轨迹与 对于初级自旋回波，它们有不同的弛豫和 扩散加权作为主要回波，可能会导致误差 例如，使用FSE数据对纤维取向进行定量。在……里面 加法，当前T2加权(方案II，逆序阶段 编码)FSE图像包含与相位有关的涂抹伪影 编码错误。为了进一步实现RF脉冲形状和 序列核心，研究需要分析和补偿 FSE中的杂散回波及T2加权成像的改进 FSE。

Present FSE images obtained at the Center contain significant signal from spurious (everything other than the primary spin echo) echoes. Because the trajectory of these echoes are different from that of the primary spin echo, they have different relaxation and diffusion weighting as the primary echo, and may lead to errors in quantitation of, for example, fiber orientation, using FSE data. In addition, present T2-weighted (scheme II, reverse order phase encoding) FSE images contain smearing artifact related to phase encoding errors. To further the goals of the rf pulse shape and sequence core, the study entails the analysis and compensation for spurious echoes in FSE, and improvement of T2-weighted imaging using FSE.