| 海马结构的磁共振信号测量 |
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| 引用本文： | 杜绪仓,王泽忠,鱼博浪,任惠民,胡海涛,刘勇.海马结构的磁共振信号测量[J].实用放射学杂志,2001,17(5):336-338. |
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| 作者姓名： | 杜绪仓 王泽忠 鱼博浪 任惠民 胡海涛 刘勇 |
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| 作者单位： | 1. 西安交通大学医学院解剖学教研室,
2. 西安交通大学第一医院影像中心 |
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| 摘 要： | 目的确定正常成年人海马结构（HPF）的磁共振信号范围，用于HS及AD的早期诊断及鉴别诊断。方法MRI横切位定量测量了254例成年国人（年龄18～76岁）的HPF的磁共振信号。结果正常HPF的T1驰豫时间、T2驰豫时间及质子密度值分别为（629±73)ms，(83±5.5)ms，5978±651。正常T2值范围（χ±2S）为72～94ms。正常HPFT
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| 关 键 词： | 海马 磁共振成像 海马硬化 Alzheimer病 |
| 文章编号： | 1002-1671（2001）05-0336-03 |
| 修稿时间： | 2001年3月7日 |
MRI Signal Measurement of
Hippocampal Formation |
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| DU Xu-cang,WANG Ze-zhong,YU Bo-lang,REN Hui-min,HU Hai-tao,LIU Yong.MRI Signal Measurement of
Hippocampal Formation[J].Journal of Practical Radiology,2001,17(5):336-338. |
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| Authors: | DU Xu-cang WANG Ze-zhong YU Bo-lang REN Hui-min HU Hai-tao LIU Yong |
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| Abstract: | Objective To define the range of the normal values of MRI signals of hippocampal formation(HPF) for the diagnosis of early stage Alzheimer's disease and hippocampal sclerosis.Methods MRI signals of 254 normal adults were measured on the transverse section.Results HPF signal intensities were:T1 relaxation times,629±73 ms;T2 relaxation times,83±5.5 ms;and proton density value,5978±651.The T2 value range(χ±2S)was 72～94 ms,and mean 83 ms.T2 value greater than 104 ms will be associated with evidence of hippocampal pathologic changes.The mixed signal intensity of T2WI(30,60,120)were:3907±407,2657±347,1288±174.The signal intensity ratios of T2WI were:1.02,1.07,1.13.Conclusion As for the histological features of temporal lobe cortex and HPF,T1relaxation times and proton density values are matched but T2 relaxation times of HPF are relatively longer. |
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| Keywords: | hippocampus magnetic resonance imaging hippocampal sclerosis Alxheimer's disease |
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