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目的:观察和比较三维螺旋CT表面再现和容积再现技术显示颌面部囊肿及肿瘤的效果,探讨三维成像技术的临床应用价值。方法:对40例颌面部囊肿及肿瘤患者进行螺旋扫描后,在三维后处理工作站进行表面再现和容积再现重建并测量,结合术中所见比较二者在定位定界,显示病损所破坏,骨皮质膨胀等方面的效果。以既往二维CT为基础进行的颌骨手术为对照,比较三维螺旋CT在术中并发症、术后并发症及手术时间上的差别。结果:容积再现技术在定位、定界、显示骨膨胀和破坏方面均优于表面再现技术,测量值更接近术中测量(P<0.05)。三维螺旋CT在手术中的指导意义优于二维CT,术中及术后并发症少(P>0.05);试验组患者术后12个月复发率(7.50%)低于对照组(15.11%)。结论:容积再现技术在定性及定量评估方面较表面再现技术更精确,所获信息更全面,更能反映病损的真实情况。三维螺旋CT,尤其是容积再现技术作为口腔颌面外科的重要诊断手段,对提高手术效果,防止复发有重要意义。
OBJECTIVE: To observe and compare the effect of three-dimensional spiral CT surface reconstruction and volume rendering on maxillofacial cysts and tumors and to explore the clinical value of three-dimensional imaging. Methods: Forty maxillofacial cysts and tumor patients were spirally scanned and then reconstructed and reconstructed on the three-dimensional post-treatment workstation by surface reconstruction and volumetric reconstruction. The findings were compared with those in the operation, which showed that the lesions were destroyed , Cortical swelling and other aspects of the effect. The previous two-dimensional CT-based jaw surgery as a control, comparing the three-dimensional spiral CT in the complications, postoperative complications and surgical time differences. Results: Volume rendering was superior to surface reconstruction in terms of orientation, demarcation, bone expansion and destruction, and the measured values were closer to intraoperative measurements (P <0.05). Three-dimensional spiral CT was superior to 2D CT in operation, with less intraoperative and postoperative complications (P> 0.05). The recurrence rate at 12 months (7.50%) in the experimental group was significantly lower than that in the control group (15.11% ). CONCLUSIONS: Volumetric rendering techniques are more accurate than surface rendering techniques for qualitative and quantitative assessment, and the information obtained is more comprehensive and better reflects the true condition of the lesion. Three-dimensional spiral CT, especially volume rendering technology as an important diagnostic tool for oral and maxillofacial surgery, to improve the surgical effect, prevent recurrence of great significance.