| 灵敏度编码磁共振谱成像(SENSE-SI)技术及图像重建方法 |
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| 引用本文： | 黄敏,卢松涛,林家瑞. 灵敏度编码磁共振谱成像(SENSE-SI)技术及图像重建方法[J]. 北京生物医学工程, 2004, 23(3): 171-174 |
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| 作者姓名： | 黄敏 卢松涛 林家瑞 |
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| 作者单位： | 华中科技大学生物医学工程系,武汉,430074 |
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| 基金项目： | 国家自然科学基金，华中科技大学校科研和教改项目 |
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| 摘 要： | 传统的相位编码磁共振谱成像(MRSI)采集数据需要很长的时间,使得MRSI在临床上的应用受阻.灵敏度编码磁共振谱成像(SENSE-SI)采用线圈矩阵来并行采集MRSI数据,是一种不仅可以大大减少数据采集时间,而且不影响空间和谱的分辨率的全新方法.在图像重建时利用各个线圈的空间灵敏度来对丢失的编码信息进行恢复,将像素折叠的图像进行展开,可以得到完全没有重叠伪影的代谢物图像.SENSE-SI采集数据的快速性和图像重建的高分辨性为MRSI真正应用于临床打下了坚实的基础.
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| 关 键 词： | 灵敏度编码 磁共振谱成像 磁共振成像 图像重建 线圈灵敏度 |
| 文章编号： | 1002-3208(2004)03-0171-04 |
| 修稿时间： | 2003-07-07 |
Technology and Reconstruction of MRSI Based on Sensitivity Encoding |
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| HUANG Min,LU Songtao,LIN Jiarui. Technology and Reconstruction of MRSI Based on Sensitivity Encoding[J]. Beijing Biomedical Engineering, 2004, 23(3): 171-174 |
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| Authors: | HUANG Min LU Songtao LIN Jiarui |
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| Affiliation: | HUANG Min,LU Songtao,LIN Jiarui. Institute of Biomedical Engineering,Huazhong University of Science & technology,Wuhan 430074 |
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| Abstract: | Using a conventional phase-encoding MRSI, the data acquisition is very time consuming and thus prohibitive in clinical settings. SENSE-SI applies coil array for parallel MRSI data acquisition. It offers a new approach to reducing the acquisition time at preserved spectral and spatial resolution in MRSI. For reconstruction, it uses the distinct spatial sensitivities of the individual coil elements to recover the missing encoding information. The metabolic image without liased artifacts will be achieved after unfolding the raw images with superposition of pixels. These improvements in data acquisition and image reconstruction provide a potential value of metabolic imaging as a clinical tool. |
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| Keywords: | SENSE MRSI MRI Image reconstruction Coil sensitivity |
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