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| 低场MR二维快速扰相梯度回波序列在颅脑检查中的应用 | |
| 引用本文： | 胡晓云,胡春洪,王苇,张海平,宋璠.低场MR二维快速扰相梯度回波序列在颅脑检查中的应用[J].中国医学影像技术,2005,21(10):1579-1581. |
| 作者姓名： | 胡晓云 胡春洪 王苇 张海平 宋璠 |
| 作者单位： | 1. 苏州大学附属第一医院影像科,江苏,苏州,215006 2. 东南大学附属扬州市第一人民医院影像科,江苏,扬州,225001 3. 江苏省高邮市人民医院放射科,江苏,高邮,225600 |
| 摘 要： | 目的观察快速扰相梯度回波(2D FSPGR)在颅脑低场MR检查中的应用价值.方法随机对70例颅脑用翻转角(FA)为70°的2D FSPGR(2D FSPGR 70°)获得T1加权图像,与常规自旋回波(SE)T1WI作对照,比较轴向图像的成像速度、血管显示、清晰度、增强效果、灰白质对比等方面,计算相关的质量控制参数,包括信噪比(SNR)、对比度(C)及对比噪声比(CNR).结果2D FSPGR 70°的图像具有成像快速、血管显示为高信号、增强效果佳等特点.2D FSPGR与SET1WI的SNR、C及CNR分别为81.98、0.116、6.58和87.15、0.117、7.18,二者基本相当.结论2D FSPGR 70°在颅脑低场MR检查中具有许多SE T1WI无法比拟的优势,可以代替SE T1WI或作为T1加权的优先替补序列. |
| 关 键 词： | 磁共振成像 快速扰相梯度回波 脑 |
| 文章编号： | 1003-3289（2005）10-1579-03 |
| 收稿时间： | 2005-05-05 |
| 修稿时间： | 2005-07-29 |
Low field MR 2D fast spoiled gradient echo sequence in application of cerebral scan |
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| HU Xiao-yun,HU Chun-hong,WANG Wei,ZHANG Hai-ping and SONG Fan.Low field MR 2D fast spoiled gradient echo sequence in application of cerebral scan[J].Chinese Journal of Medical Imaging Technology,2005,21(10):1579-1581. | |
| Authors: | HU Xiao-yun HU Chun-hong WANG Wei ZHANG Hai-ping and SONG Fan |
| Institution: | Department of Radiology, the First Affiliated Hospital of Suzhou University, Suzhou 215006, China;Department of Radiology, the First Affiliated Hospital of Suzhou University, Suzhou 215006, China;Department of Radiology, the Affiliated Yangzhou Hospital of Southeast University, Yangzhou 225001, China;Department of Radiology, Gaoyou People's Hospital of Jiangsu, Gaoyou 225600, China;Department of Radiology, Gaoyou People's Hospital of Jiangsu, Gaoyou 225600, China |
| Abstract: | Objective To investigate the value of two-dimensional fast spoiled gradient echo (2D FSPGR) sequence in the application of cerebral scan of low field MRI. Methods By 0.2 T MR scanner, 70 cases underwent both 2D FSPGR and SE T1WI randomly, and the scan-time, vessel display, definition, enhanced effect and grey-white contrast of 2D FSPGR and SE T1WI were compared. Results Two-dimensional FSPGR was characterized by short scan-time, high-signal vessel and excellent enhanced effect, with the results of SNR (81.98), C (0.116), CNR (6.58) approximated to those of SE T1WI (SNR 87.15, C 0.117, CNR 7.18). Conclusion Two-dimensional FSPGR is superior to SE T1WI in many aspects with high value in the clinical application. It may replace SE T1WI or can be taken as a supplementary sequence for T1WI. |
| Keywords: | Magnetic resonance imaging Fast spoiled gradient echo~ Brain |
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