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目的研究64层螺旋CT三维重组对气管支架置入术后的评价及其在随访中的应用价值。资料与方法气管狭窄患者35例,男18例,女17例,年龄29～91岁,平均62.5岁。恶性气管狭窄30例,良性器质性气管狭窄5例,共置入支架40枚。支架置入术后3～7天及3～12个月内分别两次行64排多层螺旋CT检查,以容积再现(VR)、多平面重组(MPR)及CT仿真内镜成像(CTVE)多种方式重组。对支架置入术后的通畅、位置、形态、邻近气道、术后合并症等情况进行观察、评估。结果CT图像中均观察到由金属支架引起的较小伪影,但并不妨碍判读图像。支架的形态、位置、范围、通畅程度,邻近气道的状况以及各种支架特有的并发症均清晰可见。结论64层螺旋CT三维成像作为一种方便、快捷、无创的检查方法能够较客观地评价气管支架置入术后情况,对于气管支架置入术后的随访有很好的应用价值。
Objective To study the evaluation of 64-slice spiral CT three-dimensional reconstruction of tracheal stent implantation and its application in follow-up. Materials and Methods 35 patients with tracheal stenosis, 18 males and 17 females, aged 29 to 91 years, mean 62.5 years. 30 cases of malignant tracheal stenosis, 5 cases of benign tracheal stricture, a total of 40 stent placement. Sixty-four multi-slice spiral CT was performed twice within 3 to 7 days and within 3 to 12 months after stent implantation. Volumetric reconstruction (VR), multiplanar reconstruction (MPR) and CT virtual endoscopy (CTVE) A variety of ways to reorganize. The postoperative placement of patency, location, morphology, adjacent airways, postoperative complications were observed and evaluated. Results Small artifacts caused by metal scaffolds were observed in the CT images but did not prevent interpretation of images. Stent shape, location, extent, patency, adjacent airway status and a variety of stent-specific complications are clearly visible. Conclusion 64-slice spiral CT three-dimensional imaging as a convenient, quick and noninvasive method can objectively evaluate the situation after tracheal stent implantation, which has a good value for follow-up after tracheal stent implantation.