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| Gd- DTPA对肝脏、脾脏及肾脏1.5T MR弥散加权成像的影响 | |
| 引用本文： | 李兴辉,张小明,曾南林,黄小华,杨林,翟昭华,唐伟,肖波. Gd- DTPA对肝脏、脾脏及肾脏1.5T MR弥散加权成像的影响[J]. 中国医学计算机成像杂志, 2011, 17(5) |
| 作者姓名： | 李兴辉 张小明 曾南林 黄小华 杨林 翟昭华 唐伟 肖波 |
| 作者单位： | 医学影像四川省重点实验室,川北医学院附属医院院放射科 |
| 基金项目： | 四川省省属高校科研创新团队建设计划 |
| 摘 要： | 目的:探讨钆喷酸葡胺(Gd-DTPA)在1.5T MR机对正常肝脏、脾脏、肾脏弥散加权成像(DWI)的影响.方法:30例健康体检者在1.5T MR机做上腹部MRI.除常规MR平扫和增强外,在增强前和增强后7min采用b值=500 s/mm2单次激发自旋回波平面成像序列(SE- EPI)分别行DWI扫描.测量增强前后肝脏、脾脏、肾脏在DWI上的信噪比(SNR)、脾脏-肝脏对比噪声比(CNR)、信号强度值和ADC值,并进行统计分析.结果:30例健康体检者检查结果均正常.正常肝脏、脾脏DWI的SNR、CNR、信号强度值、ADC值增强后7min与增强前比较差异无统计学意义(P＞0.05),肾脏DWI SNR、信号强度值、ADC值增强后7min较增强前降低,差异有统计学意义(P＜0.05).结论:Gd-DTPA增强后7min对肝脏、脾脏DWI的图像质量和ADC值无明显影响,而肾脏DWI的图像质量和ADC值降低. |
| 关 键 词： | 钆喷酸葡胺 弥散加权成像 表观扩散系数 |
Effect of Gd - DTPA on Diffusion Weighted MR Imaging of the Liver, Spleen, and Kidney at 1.5T MR Scanner |
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| LI Xina-hui,ZHANG Xiao-ming,ZENG Nan-lin,HUANG Xiao-hua,YNAG Lin,ZHAI Shao-hua,TANG Wei,XIAO Bo. Effect of Gd - DTPA on Diffusion Weighted MR Imaging of the Liver, Spleen, and Kidney at 1.5T MR Scanner[J]. Chinese Computed Medical Imaging, 2011, 17(5) | |
| Authors: | LI Xina-hui ZHANG Xiao-ming ZENG Nan-lin HUANG Xiao-hua YNAG Lin ZHAI Shao-hua TANG Wei XIAO Bo |
| Affiliation: | LI Xing-hui,ZHANG Xiao-ming,ZENG Nan-lin,HUANG Xiao-huaYNAG Lin,ZHAI Shao-hua,TANG Wei,XIAO Bo Sichuan Key Laboratory of Medical Imaging,Department of Radiology,Affiliated Hospital of North Sichuan Medical College |
| Abstract: | Purpose:To study the effect of Gd-DTPA on the images of normal liver,spleen,kidneys on diffusion weighted imaging(DWI) by using 1.5T MR scanner.Methods:Abdomen DWI was acquired in 30 physical examination subjects on 1.5T MR scanner before and 7 min after intravenous administration of Gd-DTPA.The DWI was performed by using single-shot echo planar imaging(SE-EPI)with b value of 500 s/mm2.On both pre-and post-enhanced DWI,the signal-to-noise ratio(SNR),contrast-to-noise ratio(CNR),signal intensity and apparent... |
| Keywords: | Gd-DTPA Diffusion weighted imaging Apparent diffusion coefficient |
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