超急性期脑卒中的低场MR表现(附26例分析)

The MR Representations of Ultracute Apoplexy on Low-Magnetic-Field

目的通过２６例超急性期脑卒中病例，观察和分析脑梗塞与脑出血的ＭＲ表现及诊断要点。方法２６例在低场强机器作常规横断ＳＥ序列Ｔ１ＷＩ和Ｔ２ＷＩ扫描。结果脑梗塞为Ｔ１ＷＩ稍低信号、Ｔ２ＷＩ高信号；脑出血为Ｔ１ＷＩ稍高至更高信号，Ｔ２ＷＩ高至等偏高信号，周围有Ｔ１ＷＩ低、Ｔ２ＷＩ高信号水肿带。结论超急性期脑梗塞与脑出血各具不同的信号形式，能较好鉴别，可选择性使用ＭＲＩ进行检查。

Purpose To observe the MR representations of brain hemorrhage and brain occlusion,and to analysis the key points of diagnosis on 26 cases of ultracute apoplexy.Methods 26 cases were scanned by traditional crossing SE sequence T 1WI and T 2WI by low-magnetic-field machine.Results If the patients had brain hemorrhage,the signal was a slightly low T 1WI and high T 2WI;if brain occlusion,the signal was a slightly high or even higher T 1WI,high to equally high T 2WI wit around edema area of low T 1WI、high T 2WI.Conclusion The signal representations were different between alteractes brain hemorrhage and brain occlusion recognition could be well made.MRI was a selective examining method. [