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目的:采用螺旋 CT 三维成象技术,做 CTA 与脊柱的联合重建,用以对脊柱侧弯畸形的术前评估和手术计划的制定。方法:对36例脊柱侧弯患者行螺旋 CT 扫描,采用 MIP 和 SSD 技术进行主动脉与脊柱的联合3D 重建。对主动脉与脊柱间距,以及 Cobb 角进行测量。结果:36例患者均清楚地显示了主动脉与脊柱的准确距离,Cobb 角得以精确测量。采用此种技术所做的组合重建及其3D 显示被证明与外科手术所见极为接近。结论:螺旋 CT 血管造影与脊柱3D 重建技术,不仅解决了临床脊柱侧弯矫正术前无法准确测量 Cobb 角的难题,还可以准确地测量出变异脊柱与脊柱前大血管的间距,以及两者之间的长度差,为脊柱矫正术和术后评估提供了有利的技术保证。
OBJECTIVE: To perform preoperative assessment and surgical planning of scoliosis deformity by using CT three-dimensional imaging technique to reconstruct CTA and spine. Methods: Thirty-six patients with scoliosis underwent spiral CT scan. The combined 3D reconstruction of the aorta and spine was performed using MIP and SSD techniques. Aortic and spine spacing, as well as Cobb angles were measured. Results: Thirty-six patients clearly demonstrated the exact distance between the aorta and the spine and the Cobb angle was accurately measured. Combinatorial reconstructions and their 3D displays using this technique proved to be very close to those seen in surgery. Conclusion: Spiral CT angiography and 3D reconstruction of vertebral column not only solve the difficult problem of accurately measuring Cobb angle before correction of scoliosis, but also accurately measure the distance between varicose spine and pre-spine macrovascular, The length of the difference between the spine orthopedic surgery and postoperative assessment provides a favorable technical assurance.