超大螺距Turbo Flash扫描模式在婴幼儿气管异物诊断中的价值  

The value of ultra-large pitch Turbo Flash scan mode in the diagnosis of tracheal foreign body in infants

作　　者：宋辉[1] 李文航 唐滢 王荣品[1] 唐雷[1] 蔡登华[1] 曾宪春[1] SONG Hui;LI Wenhang;TANG Ying;WANG Rongpin;TANG Lei;CAI Denghua;ZENG Xianchun(Department of Radiology, Guizhou Proviitcial People's Hospital, Key Laboratory of Intelligent Medical Imaging Analysis and Accurate Diagnosis of Guizhou Province, International Erem plary CooperationBase of Precision Imaging for Diagfiosis and Treatment,Guiyang 550002,China)

机构地区：[1]贵州省人民医院放射科贵州省智能医学影像分析与精准诊断重点实验室精准影像诊疗示范型国际科技合作基地,贵州贵阳550002

出　　处：《实用放射学杂志》2019年第10期1661-1664,共4页Journal of Practical Radiology

基　　金：贵州省科技联合基金项目(黔科合LH字[2016]7143号;黔科合LH字[2016]7144号)。

摘　　要：目的探讨超大螺距Turbo Flash扫描模式在婴幼儿气管异物诊断中的价值。方法回顾性分析经支气管内镜检查证实的60例婴幼儿气管异物的影像学资料,按检查时间顺序分2组:A组30例行常规CT扫描,开启CARE Dose 4D/CARE kV扫描模式,螺距为1.9;B组30例行超大螺距Turbo Flash模式扫描,2组均记录每位患儿的扫描时间、容积CT剂量指数(CTDIvol)和平均剂量长度乘积(DLP),并进行统计学分析。结果 A组和B组扫描时间、DLP和CTDIvol均有统计学意义。B组CTDIvol及DLP均显著低于A组(P<0.05)。A组和B组扫描方案的诊断准确率均为100%(30/30)(P均>0.05);异物显示率均为100%(30/30)(P均>0.05)。结论超大螺距Turbo Flash模式用于婴幼儿气管异物检查,可显著降低辐射剂量、缩短检查时间并能获得满意的图像质量。Objective To explore the value of ultra large pitch Turbo Flash scan mode in the diagnosis of tracheal foreign body in infants.Methods The imaging data of 60 infants with foreign body in trachea confirmed by bronchus endoscopy were analyzxxl retrospectively. The 60 infants were equally divided into 2 groups according to the scanning time. For group A,the routine scan with the mode of CARF Dose 4D/CARK kV and pitch as 1.9 was performed. For group B,the scan with ultra-large pitch Turbo Flash model was performed.The scanning time,volume CT dose index (CTDIvol) and dose length product (DLP) of each patient were recorded in both groups and statistically analyzed.Results The scanning time,DLP and CTDIvol of group A and group B were statistically significant. CTDIvol and DLP of group B were significantly lower than those of group A (P<0.05). The diagnostic accuracy of group A and B were 100%(30/30).respectively (P>0.05). The foreign body display of group A and B were 100%(30/30), respectively (P>0.05).Conclusion Ultra-large pitch Turbo Flash can be used to detect tracheal foreign body in infants. It can significantly reduce radiation dose, shorten examination time and obtain satisfactory image quality.

关 键 词：异物 大螺距 气管 婴幼儿 辐射剂量 

分 类 号：R649.4[医药卫生—外科学] R562.1[医药卫生—临床医学]