CT 测量茎突与扁桃体间距在茎突综合征诊断中的价值

摘要

Objective:To explore the diagnostic value of measuring the distance between styloid process and tonsil by using MSCT.Method: 40 cases ( 80 sides ) clinical styloid process syndrome took 64 layer spiral CT scan.Using multiplanar reconstruction technique to measure the length of styloid process,inward an-gle and the distance between styloid process an tonsil.Using SPSS 17.0 software to analyze the correlation be-tween the distance (which between styloid process and tonsil) and styloid process length,inward angle and the diagnostic value of the distance between styloid process and tonsil.Result:The distance in clinical case group was shorter than that in normal control group ( P<0.01) .The distance between styloid process and ton-sil,the length of styloid process,Inward angle were all negative correlation with each other.( r value was re-spectively -0.751,-0.318,P<0.01) .The area under ROC curve was 0.918 of the distance between styloid process and tonsil.When the diagnostic threshold of distance between styloid process and tonsil was 10. 65mm,the sensitivity was 81.3%,the specificity was 92.5%,all at a high level.Conclusion: There is diag-nostic value in styloid process syndrome, when the distance between styloid process and tonsil is shorten.It can be used as the basis of diagnosis, the multilayer spiral CT can be used as the preferred method.%目的：探讨多层螺旋CT（ MSCT）测量茎突与扁桃体间距在茎突综合征（ SPS）的诊断价值。方法：对临床诊断为茎突综合征的40例（80侧）患者均行64层螺旋CT扫描，采用多平面重组（ MPR）技术测量茎突的长度、向内偏斜以及茎突与扁桃体间距。使用SPSS17．0软件分析茎突与扁桃体间距与茎突长度、方位角之间的相关性及茎突与扁桃体间距的诊断效能。结果：病例组中茎突与扁桃体间距低于正常对照组（ P＜0．01）。茎突与扁桃体间距与茎突长度、向内偏斜角均呈负相关（ r值分别为－0．751、－0．318，P＜0．01）。茎突与扁桃体间距ROC曲线下面积为0．918，当茎突与扁桃体间距诊断阈值为10．65mm时，敏感度为81．3％，特异度为92．5％，均较高。结论：茎突与扁桃体间距缩短在茎突综合征的诊断中具有诊断效能，可作为诊断依据。多层螺旋CT在茎突测量中可作为首选方法。