Abstract
目的 探讨螺旋CT多平面重组技术(MPR)在喉癌诊断中的意义.方法 35例拟诊喉癌患者行术前CT检查并行MPR图像后处理,将横断面、MPR及横断面联合MPR图像诊断结果分别与术后病理切片的病变范围进行对照,应用卡方检验进行统计学处理.结果 对前联合受侵的评价,横断面、MPR、横断面联合MPR 3组图像准确性分别为82.9%、68.6%和91.4%,差异有统计学意义(P<0.05),其中,联合图像优于MPR图像(P<0.05).在评价喉旁间隙受侵方面,3组图像准确性分别为91.4%、68.6%和94.3%,差异有统计学意义(P<0.05),其中,横断面及联合图像准确性均高于MPR图像(P值均<0.05).3组图像对评价甲状软骨受侵准确性分别为94.3%、77.1%和97.1%,差异有统计学意义(P<0.05),其中,横断面与MPR之间,MPR与联合图像之间差异有统计学意义(P值均<0.05);对会厌、杓会厌皱襞、声带、室带、会厌前间隙、梨状窝、杓状软骨及喉外受侵的评价,3组图像差异无统计学意义(P>0.05),但横断面联合MPR图像对判断各结构受侵具有较高的敏感性、特异性和准确性.结论 螺旋CT横断面图像能够很好显示肿瘤的形态、大小、侵犯范围及颈部淋巴结转移,MPR较横断面图像更全面直观地显示肿瘤的形态及范围,是对常规轴面图像的有益补充.横断面联合MPR能提高喉癌诊断符合率。
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