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

分析

• 批准号: 6122263
• 负责人: EDWARD W HSU
• 金额: $ 0.05万
• 依托单位: DUKE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-02-01 至 1999-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6122263
• 关键词: biomedical equipment development; biomedical resource; nuclear magnetic resonance spectroscopy; technology /technique

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.

目前在该中心获得的 FSE 图像包含重要的 来自杂散的信号（除了主自旋回波之外的所有信号） 回声。 因为这些回波的轨迹与 与初级自旋回波相比，它们具有不同的弛豫和 扩散加权作为主要回波，并可能导致错误 例如，使用 FSE 数据对纤维取向进行定量。 在 另外，目前的 T2 加权（方案 II，逆序阶段 编码）FSE 图像包含与相位相关的拖尾伪影 编码错误。 为了进一步实现射频脉冲形状和 序列核心，该研究需要分析和补偿 FSE 中的杂散回波以及使用 T2 加权成像的改进 FSE。