论文部分内容阅读
为评估各种扫描参数对CT虚拟支气管镜成像效果的作用,作者对气道大小和解剖与人相似的山羊采取了各种技术进行螺旋CT扫描。CT层厚分别为2、4和8mm,重建间隔(在4mm层厚下的重建层面重叠比例)为0％,25％,50％和75％;在2和8mm层厚下为50％,螺距分别为1.0,1.5和2.0,毫安设置分别为100,175和250mA。采用标准的内插和运算方式,恒定视野为30cm,仟伏为120kV。每次重建间隔均在4mm层厚下评估。扫描后立即处死该山
To assess the effect of various scan parameters on CT virtual bronchoscopic imaging, the authors performed various techniques of helical CT scans on airway size and anatomically similar goats. The CT layer thicknesses were 2, 4 and 8 mm, respectively, and the reconstruction interval (reconstructed layer overlap at 4 mm layer thickness) was 0%, 25%, 50% and 75%; at 2 and 8 mm layer thickness, Respectively 1.0, 1.5 and 2.0, mA settings were 100,175 and 250mA. Using standard interpolation and calculation, the constant field of view of 30cm, Qianwei 120kV. Each reconstruction interval was evaluated at 4 mm layer thickness. The mountain was killed immediately after scanning