Objective To explore the value of 64-slice spiral CT standard algorithm and bone algorithm thin-layer reconstruction technique in the diagnosis of occult basilar skull fracture. Methods The standard algorithm and bone algorithm thin-layer reconstruction were used to judge the fracture site,range,surrounding sinus cavity and soft tissue conditions fracture in 300 patients with suspected occult basilar skull fracture.Results Thick-layer scan only showed some indirect signs without obvious fractures in these patients.The positive rate of fracture diagnosis a-chieved by bone algorithm thin-layer reconstruction was higher than that achieved by standard al-gorithm thin-layer reconstruction(95.3% vs 58.4%,P<0.05),and that achieved by combined standard algorithm and bone algorithm thin-layer reconstruction was higher than that achieved by standard algorithm thin-layer reconstruction(100.0% vs 58.4%,P<0.05).However,the com-bined standard algorithm and bone algorithm thin-layer reconstruction was not significantly dif-ferent from bone algorithm thin-layer reconstruction for the positive rate of fracture diagnosis (100.0% vs 95.3%,P>0.05).Conclusion The accuracy of 64-slice spiral CT bone algorithm thin-layer reconstruction is higher than that of standard algorithm thin-layer reconstruction for di-agnosing occult basilar skull fracture,and their combination has important clinical value in the di-agnosis of occult basilar skull fracture.%目的 探讨64排螺旋CT标准算法及骨算法薄层重建技术在颅底隐匿性骨折患者诊断中的应用价值.方法 选取可疑颅底隐匿性骨折患者300例,利用标准算法及骨算法薄层重建分别对颅底是否有骨折进行评判,如有骨折,对骨折部位、范围、周围窦腔及软组织情况做出客观的判断.结果 300例颅脑外伤患者中,厚层扫描未见明确骨折,仅可见部分间接征象.骨算法薄层重建较标准算法薄层重建得到骨折诊断阳性结果高(95.3%比58.4%,P<0.05),标准算法联合骨算法薄层重建骨折诊断阳性率高于标准算法薄层重建(100.0%比58.4%,P<0.05),标准算法联合骨算法薄层重建与骨算法薄层重建骨折诊断阳性率比较差异无统计学意义(100.0%比95.3%,P>0.05).结论 GE64排螺旋CT骨算法薄层重建在评价颅底隐匿性骨折诊断的准确率明显高于标准算法薄层重建,联合两者对颅底隐匿性骨折诊断具有重要的临床价值.
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