| 改良3D-WE-FLASH序列在关节软骨成像中的应用 |
| |
| 引用本文： | 方挺松,彭加友,赵晓梅,秦红卫.改良3D-WE-FLASH序列在关节软骨成像中的应用[J].CT理论与应用研究,2009,18(3). |
| |
| 作者姓名： | 方挺松 彭加友 赵晓梅 秦红卫 |
| |
| 作者单位： | 广州中医药大学,附属佛山市中医院CT室,广东,佛山,528000 |
| |
| 摘 要： | 目的:对附加水激发技术的3D-FLAsH序列进行优化,并与传统的频率预饱和脂肪抑制技术的3DIFLASH序列进行比较.方法:健康成年志愿者10人,扫描序列采用不同的脉冲重复时间(TR)、回波时间(TE)和翻转角度(FA)的3组3D-WE-FLASH序列和一组3D-FS-FLASH序列.在各扫描序列标准矢状位图像上测量膝关节软骨信噪比(sNR)、关节软骨与周围组织之间的对比度噪声比(CNR)和关节软骨与关节液体之间的对比度噪声比效率(CNca-fluidefficiency).采用重复测量资料的方差分析对量化数据进行分析.结果:SNca,CNRcafluid,CNRca-fat,CNRca-menlsus在序列4组均显著性高于序列1、2、3组;SNRcaCNRca-fluid,CNRca-fatCNRca-bone在序列2组显著性高于序列1、3组;CNRca-fluideff在序列2、4组之间无显著性差异.结论:经优化后的水激发3D-FLASH序列能够显著缩短扫描时间并达到理想的软骨成像效果.
|
| 关 键 词： | 核磁共振成像 关节软骨 膝关节 |
Optimization of a 3D FLASH Water Excitation MRI Sequence for the Visualization of Articular Cartilage |
| |
| FANG Ting-song,PENG Jia-you,ZHAO Xiao-mei,QING Hong-wei.Optimization of a 3D FLASH Water Excitation MRI Sequence for the Visualization of Articular Cartilage[J].Computerized Tomography Theory and Applications,2009,18(3). |
| |
| Authors: | FANG Ting-song PENG Jia-you ZHAO Xiao-mei QING Hong-wei |
| |
| Institution: | FANG Ting-song,PENG Jia-you,ZHAO Xiao-mei,QING Hong-wei(Foshan TCM Hospital of Guangzhou University of Chinese Medicine,Foshan 528000,China) |
| |
| Abstract: | Objective To optimize a rapid cartilage dedicated 3D-FLASH sequence using water excitation instead of conventional spectral fat suppression and compare the value of 3D-WE-FLASH sequence with 3D-FS-FLASH on evaluating articular hyaline cartilage of knee in 10 healthy volunteers.Methods.The knees of ten volunteers were scanned at 1.5T by using sagittal 3D-WE-FLASH and 3D-FS-FLASH,and different repetition time(TR),echo time(TE),or flip angle(FA) were adoped in 3D-WE-FLASH sequence.The signal noise ratio of car... |
| |
| Keywords: | magnetic resonance imaging cartilage knee joint |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
