目的:探讨X线数字断层融合技术(digital tomosynthesis, DTS)在膝关节外伤中的临床应用价值。方法:对28例膝关节外伤骨折X线平片不能确诊或显示欠佳的患者进行断层融合扫描及重建处理,获得扫描范围内连续断层图像,常规检查体位以冠,矢状位扫描为主,必要时加双斜扫描。结果:DTS确诊骨折26例,优于普通X线。DTS扫描新鲜骨折能清晰显示骨折线,骨折断端对位对线及碎骨片情况,陈旧性骨折清晰显示断端愈合情况。结论:断层融合技术在诊断膝关节骨折方面具有显著的优越性,尤其在检查结构复杂、体部较厚及骨折内固定术后复查等方面也具有重要的应用价值。
Objective: To explore the clinical value of X-ray digital tomosynthesis(DTS)in the diagnosis of knee joint fractures. Methods:A total of 28 patients with knee joint trauma whose X-ray film cannot be clearly diagnosed or can confirm the diagnosis but need for further identification of diagnosis were given DTS scan and three-dimensional reconstruction in order to control the study. Results:The reconstructed images after DTS scanning showed that the knee joint fractures were clearly diagnosed(P＜0.01),and the detection rate of 28 knee joint fractures was 92.86%. DTS scanning could clearly detect the fresh knee joint fracture's fracture line, corresponding line and broken bones. For the old fracture, DTS scanning could clearly show the condition of the fracture end's healing. Conclusion:DTS is of great value in the diagnosis of rib fractures, especially in the forensic identification of rib fractures, which is an important supplement to CT scan and its three-dimensional reconstruction.