| 3．0TMR T2WI序列与增强T1WI序列对鼻咽癌T分期的价值 |
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| 引用本文： | 林蒙,罗德红,余小多,欧阳汉,王振常,周纯武.3．0TMR T2WI序列与增强T1WI序列对鼻咽癌T分期的价值[J].当代医学,2009,15(20):17-21. |
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| 作者姓名： | 林蒙 罗德红 余小多 欧阳汉 王振常 周纯武 |
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| 作者单位： | 1. 中国医学科学院北京协和医学院肿瘤医院影像诊断科,100021,北京
2. 首都医科大学附属北京同仁医院放射科,100730,北京 |
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| 基金项目： | 北京希望马拉松专项基金资助，基金编号LC2008B44 |
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| 摘 要： | 目的比较3.0TMR T2WI脂肪抑制（fat supptession，FS）序列与增强后T1WI脂肪抑制序列对鼻咽癌T分期的诊断价值。方法对76例鼻咽镜活检证实的鼻咽癌患者采用3.0TMR依次进行平扫、动态增强及FSE-T1-FS（fast spin echo，FSE）增强扫描，平扫包括横断位FSE—T2-FS序列，增强扫描采用横断位LAVA（liver acquisition with volume acceleration，肝脏加速客积采集）序列动态增强扫描及随后的横断位FSE—T1-FS增强扫描。用平扫横断位FSE-T2-FS序列、LAVA序列动态增强扫描及FSE—T1-FS序列增强扫描对鼻咽癌周围结构侵犯进行评估。采用McNemar法对横断位平扫FSE—T2-FS序列及LAVA序列动态增强扫描判断鼻咽癌周围侵犯情况进行统计学分析。结果LAVA序列动态增强扫描序列评价腭帆张提肌、头长肌、咽旁间隙、蝶窦、上颌窦、翼腭窝、翼内肌、翼外肌、翼突、海绵窦、颅内的侵犯优于FSE-T2-FS序列，其中对判断腭帆张提肌及翼腭窝的侵犯存在显著性差异。同时，LAVA序列动态增强扫描在咽旁间隙及翼腭窝受侵的判断优于FSE—T1-FS序列增强扫描。结论与平扫FSE—T2-FS序列相比，增强扫描能够更加清楚显示鼻咽癌的边界和侵犯范围，而采用LAVA序列动态增强扫描显示鼻咽癌周围结构侵犯优于或等于FSE-T1-FS增强扫描序列。
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| 关 键 词： | 鼻咽癌 磁共振成像 LAVA序列 动态增强 T分期 |
Comparison of T_2-weighted Imaging and Contrast-enhanced T_1-weighted Imaging at 3.0T MR on Evaluating T-Staging of Nasopharyngeal Carcinoma |
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| Meng LIN,De-hong LUO,Xiao-duo YU,Han OUYANG,Zhen-chang WANG,Chun-wu ZHOU.Comparison of T_2-weighted Imaging and Contrast-enhanced T_1-weighted Imaging at 3.0T MR on Evaluating T-Staging of Nasopharyngeal Carcinoma[J].Contemporary Medicine,2009,15(20):17-21. |
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| Authors: | Meng LIN De-hong LUO Xiao-duo YU Han OUYANG Zhen-chang WANG Chun-wu ZHOU |
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| Institution: | Meng LIN1,De-hong LUO1,Xiao-duo YU1,Han OUYANG1,Zhen-chang WANG2,Chun-wu ZHOU11.Department of Diagnostic Imaging,Cancer Hospital,Peking Union Medical College,Chinese Academy of Sciences,Beijing 100021,China 2.Department of Radiology,Beijing Tongren Hospital affiliated to Capital University of Medical Sciences,Beijing 100730,China |
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| Abstract: | Objective To compare T2-weighted imaging with fat suppression(FS) and contrast-enhanced Tl-weighted imaging with FS in the evaluation of T-staging of nasopharyn-geal carcinoma. Methods Seventy-six consecutive cases proved by pathology of nasopharyn-geal biopsy undergone MR scan at 3.0T MR device. MR examinations were non-enhanced sequences including axial T2-FS using FSE (fast spin echo) series,and enhanced sequences including axial dynamic contrast enhanced(DCE) MRI using LAVA(liver acquisition with volume... |
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| Keywords: | Nasopharyngeal carcinoma (NPC) MRI LAVA(liver acquisition with volume acceleration)series Dynamic contrast enhanced T-staging |
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