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软组织肿瘤的功能MR影像学研究近况 被引量:3
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作者 张丽娜 王绍武 《国外医学(临床放射学分册)》 2007年第1期50-53,共4页
MR功能成像(包括MR扩散加权成像、MR灌注加权成像及MR波谱等)可提供生理、生化及代谢过程的信息并获得动态的定量资料,弥补了常规MR检查在软组织肿瘤定性、判断肿瘤的恶性程度及判定术后疗效等方面的不足。就不同成像技术的优缺点、成... MR功能成像(包括MR扩散加权成像、MR灌注加权成像及MR波谱等)可提供生理、生化及代谢过程的信息并获得动态的定量资料,弥补了常规MR检查在软组织肿瘤定性、判断肿瘤的恶性程度及判定术后疗效等方面的不足。就不同成像技术的优缺点、成像的病理生理学基础以及在临床诊断中的作用和限度进行综述。 展开更多
关键词 软组织肿瘤 MR扩散加权成像 MR灌注加权成像 mr波谱学
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MRS study on lentiform nucleus in idiopathic Parkinson‘s disease with unilateral symptoms 被引量:16
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作者 郑旭宁 朱雄超 +4 位作者 阮凌翔 张玲菊 袁敏 商德胜 柳扬 《Journal of Zhejiang University Science》 CSCD 2004年第2期246-250,共5页
Objective: To investigate changes in magnetic resonance spectroscopy (MRS) of lentiform nucleus during the early stage of Parkinson抯 disease. Methods: Twenty-five patients with idiopathic Parkinson disease with unila... Objective: To investigate changes in magnetic resonance spectroscopy (MRS) of lentiform nucleus during the early stage of Parkinson抯 disease. Methods: Twenty-five patients with idiopathic Parkinson disease with unilateral symptoms (IPDUS) and 25 healthy volunteers were enrolled in this study. MRS of the lentiform nucleus in each patient was taken and then concentrations of N-acetylaspartate (NAA), Creatine (Cr) and Choline (Cho) were calculated. Results: Compared to that in the control, NAA/ (Cho+Cr) was significantly lower in the lentiform nucleus contralateral to symptoms and even that in the ipsilateral side in IPDUS patients (all P<0.05); while there was no difference between the two sides in the healthy volunteer (P>0.05). The ratio of NAA/(Cho+Cr) ipsilateral to the sympatomatic side of the patient was also lower than that of the control (P<0.05). Conclusions: there might be some changes with MRS on the lentiform nucleus during the early stage of idiopathic Parkinson抯 disease with unilateral symptom. MRS may be one of the reliable methods for early or even sub-clinical diagnosis. 展开更多
关键词 Idiopathic Parkinson抯 disease with unilateral symptom (IPDUS) Magnetic resonance spectroscopy N-acetyas- partate CREATINE CHOLINE
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