摘要
目的:探讨MSCT多模式重组技术在膝关节损伤所致的胫骨骨折术前检查中的临床应用价值。方法:40例胫骨平台骨折,采用16层螺旋CT进行容积扫描,并应用高级工作站进行VR、MIP及MPR等重组技术进行观察。结果:40例胫骨平台骨折的病例中,胫骨平台粉碎并塌陷骨折37例;另有3例X线检查无阳性发现,MSCT确诊为胫骨髁间脊隐匿性骨折,其中伴有髌韧带断裂和内侧副韧带部分断裂各1例。结论:MSCT多模式成像可清晰显示骨折的部位,骨折线的走行方向、骨质碎裂程度和移位的距离以及关节面塌陷情况等。其中3D成像显示骨折区表面状态较好,多平面成像(MPR)可明确显示骨折处的内部细节,容积成像(VR)和最大密度投影(MIP)可以显示骨折部位的立体透明外观和大韧带损伤的情况。在胫骨平台骨折手术治疗前作为制订手术治疗方案具有重要的价值。
Objective:To study the clinical value of MSCT with multi-model reconstruction in the treatment of tibia fratures.Methods:40 cases of knee joint trauma were examined by plain radiography and then scanned by 16 slice spiral CT (MSCT).The raw data were reconstructed with VR、MIP and MPR techniques.Results:In all 40 cases,there were 37 cases of tibial plateau fractures.Occult fractures in 3 cases accompanied by patellar ligament rupture or medial collateral ligament rupture were demonstrated by MSCT,but missed on X-ray films.Multi-model reconstructed imaging of MSCT can demonstrate the location of fractures,the routes of fracture line,the depression of fragment,the distance of fracture dislocation and the collapse of articular surfaces.MPR could distinctly demonstrate internal morphological changes of bones,VR and MIP could demonstrate the stereoscopic shapes of fractures and the injure of large ligaments.Conclusion:16 slice spiral CT can effectively reveal the ligaments injury and the occult fractures which are not visible on X-ray film and conventional CT.Multi-model reconstruction techniques can further confirm or exclude fractures and ligaments injury,they can improve the diagnostic accuracy obviously.
出处
《放射学实践》
2005年第7期612-614,共3页
Radiologic Practice
关键词
膝关节
骨折
体层摄影术
X线计算机
三维重组
多平面重组
Tibial plateau
Fracture
Tomography,X-ray computed
3-Dimensional reformation
Multiplanar reformation
