标题：低剂量CT扫描在儿童鼻窦炎症中的应用价值

      作者：程 广，卢林民，潘正航
    （柳州市妇幼保健院放射科，广西 柳州 545001）

      卷次： 2012年23卷7期

      【摘要】 目的 探讨低剂量CT扫描对儿童鼻窦炎症检查的应用价值。方法 将40例鼻窦炎患儿随机分为
两组，分别行常规剂量CT扫描（100 kV、100 mA）与低剂量CT扫描（100 kV、40 mA），CT扫描仪自动显示单次
扫描加权CT剂量指数（CTDIw），对两组CTDIw进行比较；由 3位主治医师盲法分析CT图像，并将图像分级。
结果 常规剂量组的CTDIw（11.94 mGy）与低剂量组的CTDIw（4.78 mGy）相比，后者明显低于前者，剂量下降比
率约59.97%，而两者图像质量无明显差异，均满足诊断要求。结论 鼻窦炎患儿的低剂量CT扫描有效地降低了
辐射剂量，同时又基本满足了图像诊断要求，具有较大的临床应用价值。

      【关键词】 儿童；鼻窦炎症；CT扫描；低剂量；CTDIw

      【中图分类号】 R729 【文献标识码】 A 【文章编号】 1003—6350（2012）07—070—03<

br>Application value of low-dose CT Scan in pediatric sinusitis.
CHENG Guang, LU Lin-min, PAN Zheng-hang. De-
partment of Radiology, Maternal and Child Health-Care Hospital of Liuzhou, Liuzhou 545001,Guangxi, CHINA

【Abstract】 Objective To explore the application value of low-dose CT scan for diagnosing sinusitis in children.
Methods 40 children with sinusitis were selected and randomly divided into standard-dose CT scan group (100 kV 100 mA)
and low-dose CT scan group (100 kV 40 mA) averagely. Weighted CT dose index(CTDIw) of the two groups were
compared with each other．The image quality was blindly evaluated by 3 attending physicians in both groups.
Results The CTDIw in low-dose group（4.78 mGy）was 59.97% of the index in standard-dose group（11.94
mGy）. The image quality in each group was similar, and all images were qualified for diagnosing. Conclusion The
low-dose CT scan would be practical in diagnosing pediatric sinusitis, which reducing the CT radiation dose and satis-
fying image diagnosis requirements.

      【Key words】 Child; Sinusitis; CT scan; Low-dose; CTDIw