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虚拟支气管镜检查是近来发展起来的一种非损伤性的技术,在儿童却有特殊的问题。为了解该技术评估儿童气管支气管通畅性的潜力,作者对8例有症状的儿童行螺旋CT扫描和虚拟支气管镜检查。3例疑有气管支气管软化症,另3例疑有血管环。1例房室通道矫正术后,另1例囊性纤维化肺移植术后评估。平均年龄5岁9个月(6个月至15岁)。采用双探测器螺旋CT。扫描时间25～30s。螺距1.0或1.5,层厚1.1～3.2mm,层厚重叠30％～50％。对比剂(iohexol,300mg/ml)由肘前静脉用一自动高压注
Virtual bronchoscopy is a recently developed non-invasive technique that has special problems in children. To understand the potential of this technique to assess tracheobronchial patency in children, the authors performed spiral CT scans and virtual bronchoscopy on eight symptomatic children. Three cases of suspected bronchial bronchitis, the other three suspected vascular ring. One case of atrioventricular channel correction and another case of cystic fibrosis after lung transplantation were evaluated. The average age is 5 years and 9 months (6 months to 15 years). Double detector spiral CT. Scan time 25 ~ 30s. Pitch 1.0 or 1.5, layer thickness 1.1 ~ 3.2mm, layer thickness overlap 30% ~ 50%. The contrast agent (iohexol, 300 mg / ml) was injected from the antecubital vein with an autoclave