【摘要】 目的通过测量健康中老年人脑组织测量对称部位CT差值,探讨该方法在中老年人超急性期脑梗死中的诊断价值。方法测量30例健康中老年人(正常对照组)8处脑组织对称部位的CT值并计算差值(ΔHU),对所得的数据进行统计学分析得出正常参考值。26例经临床追踪证实的中老年人超急性期脑梗死共29个可疑病灶,测量和计算病灶与其对称部位的CT值差值,并与正常组测量结果进行比较。结果正常组8处脑组织对称部位CT值差值测量数据呈偏态分布,平均值为0.42HU(0~2.1HU);病变组29处可疑病灶与其对称部位的CT值差值平均为3.64HU(1.6~8.2HU)。正常组8处脑组织对称部位CT值差值与病变组比较,差异有极显著性意义(P<0.01)。结论CT平扫测量对称部位脑实质CT值差值,对中老年人超急性期脑梗死的诊断有重要的参考价值。更多还原

【Abstract】 Objective:To study the role of measuring normal reference CT value (ΔHU) in symmetric cerebral structure of the middle-old aged healthy people in the diagnosis of super-acute cerebral infarction.Methods:Routine plain CT scan was undertaken in 30 normal middle-old aged cases,to measure the symmetric cerebral structure on 8 pairs of areas in each person and ΔHU CT values were calculated.All of the data were analyzed stastistically to obtain a normal reference value which was compared with the ΔHU value of 26 patients having super-acute cerebral infarction (29 suspected lesions).Clinical diagnosis was obtained by follow-up.Results:The mean ΔHU value in the 8 areas of symmetric cerebral structure in the normal middle-old aged group was 0.42HU (0~2.1HU),showing an eccentric distribution.The mean ΔHU value of the symmetric cerebral structures of patients with suspected lesion was 3.64HU (1.6~8.2HU).There was statistical significant difference between the ΔHU in the normal group and patient group (P<0.01).Conclusion:The ΔHU value in the symmetric cerebral area is a good reference in evaluating the super-acute cerebral infarction.更多还原