| 3.0T磁共振快速电影相位对比法对胸椎管内脑脊液流动的扫描参数优化 |
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| 引用本文： | 闫乐卡,刘怀军,尚华,黄渤源,崔彩霞,李晖.3.0T磁共振快速电影相位对比法对胸椎管内脑脊液流动的扫描参数优化[J].中国介入影像与治疗学,2011,8(4):303-306. |
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| 作者姓名： | 闫乐卡 刘怀军 尚华 黄渤源 崔彩霞 李晖 |
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| 作者单位： | 河北医科大学第二医院影像科,河北,石家庄,050000 |
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| 摘 要： | 目的对3.0T磁共振电影相位对比（MRfast cine-PC）法胸椎管内脑脊液流动扫描参数进行优化。方法对30名正常志愿者采用3.0T磁共振仪进行检查获得常规矢状位FSE T2 WI后,于T6-7椎间盘层面定位行胸椎管脑脊液fast cine-PC法扫描。在其他参数不变的情况下,分别改变流速编码（设置为5 cm/s、10 cm/s、15 cm/s、20 cm/s）、频率编码方向（R/L、A/P）、FOV（18 cm、26 cm、34 cm）、矩阵（384×256、256×128）、NEX（1次、2次）等参数,观察成像效果。结果流速编码采用5、10、15、20 cm/s时,图像质量为优、良、差者分别为0、16、14名,19、11、0名,28、2、0名,30、0、0名,差异有统计学意义（χ^2=8.65,P=0.02）;频率编码方向分别为A/P、R/L时,图像质量为优、差者分别为27、3名,10、20名,差异有统计学意义（Z=-4.12,P〈0.001）;FOV分别为18 cm、26 cm、34 cm时,图像质量为优、良、差者分别为0、12、18名,11、18、1名,29、1、0名,差异有统计学意义（χ^2=8.77,P=0.01）;矩阵分别为384×256、256×128时,优、良图像分别为29、1名,3、27名,差异有统计学意义（Z=-4.81,P〈0.001）;NEX分别为1次及2次时,优、良图像分别为6、24名,30、0名,差异有统计学意义（Z=-4.89,P〈0.001）。结论流速编码10 cm/s、频率编码方向A/P、FOV26 cm、矩阵256×128、NEX2次为采用3.0T MRfast cine-PC法扫描胸椎管内脑脊液的最优参数。
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| 关 键 词： | 磁共振成像 椎管 胸脑脊液 参数优化 |
| 收稿时间： | 2011/1/13 0:00:00 |
| 修稿时间： | 2011/3/11 0:00:00 |
Parameters optimation of 3.0T MR fast cine-PC in imaging cerebrospinal fluid flow of thoracic vertebra canal |
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| YAN Le-k,LIU Huai-jun,SHANG Hu,HUANG Bo-yuan,CUI Cai-xia and LI Hui.Parameters optimation of 3.0T MR fast cine-PC in imaging cerebrospinal fluid flow of thoracic vertebra canal[J].Chinese Journal of Interventional Imaging and Therapy,2011,8(4):303-306. |
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| Authors: | YAN Le-k LIU Huai-jun SHANG Hu HUANG Bo-yuan CUI Cai-xia and LI Hui |
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| Institution: | Department of Radiology, the Second Hospital of Hebei Medical University, Shijiazhuang 050000, China;Department of Radiology, the Second Hospital of Hebei Medical University, Shijiazhuang 050000, China;Department of Radiology, the Second Hospital of Hebei Medical University, Shijiazhuang 050000, China;Department of Radiology, the Second Hospital of Hebei Medical University, Shijiazhuang 050000, China;Department of Radiology, the Second Hospital of Hebei Medical University, Shijiazhuang 050000, China;Department of Radiology, the Second Hospital of Hebei Medical University, Shijiazhuang 050000, China |
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| Abstract: | Objective To optimize imaging parameters of cerebrospinal fluid flow of thoracic vertebra canal with 3.0T MR fast cine-PC.Methods Totally 30 normal volunteers were enrolled,the scout located at T6-7 levels.The imaging effect was explored with different parameters,including velocity encoding（5 cm/s,10 cm/s,15 cm/s,20 cm/s）,frequency encoding direction（R/L,A/P）,FOV（18 cm,26 cm,34 cm）,matrix（384×256,256×128） and NEX（1,2）,respectively.Results The numbers of excellent,good or poor imaging in the velocity codes of 5 cm/s,10 cm/s,15 cm/s,20 cm/s were 0,16,14;19,11,0;28,2,0;30,0,0;respectively（χ^2=8.65,P=0.02）.The numbers of excellent,good or poor imaging with different FOV（18 cm,26 cm,34 cm） were 0,12,18;11,18,1 and 29,1,0（χ^2=8.77,P=0.01）.The numbers of excellent or poor imaging with different frequency encoding direction（R/L,A/P） were 27,3 and 10,20,respectively（Z=-4.12,P0.001）.The numbers of excellent or good imaging with different matrix（384×256,256×128） were 29,1 and 3,27（Z=-4.81,P0.001）;with different NEX（1 time,2 times） were 6,24 and 30,0,respectively（Z=-4.89,P0.001）.Conclusion The optimized parameters of 3.0T MR fast cine-PC in imaging cerebrospinal fluid flow of thoracic vertebra canal are as follows： The velocity codes 10 cm/s,the frequency encoding direction A/P,the FOV 26 cm,the matrix 256×128 and NEX 2 times. |
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| Keywords: | Magnetic resonance imaging Spinal canal Cerebrospinal fluid Parameter optimization |
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