多层螺旋CT图像后处理技术在隐匿性骨折中的诊断价值

目的:探讨多层螺旋CT(MSCT)后处理技术诊断隐匿性骨折的应用价值。方法:对52例X线平片结果阴性,而临床高度怀疑骨折的急诊外伤患者行MSCT容积扫描后,将原始图像进行多平面重组、最大密度投影、容积再现法成像等后处理。分析各图像显示骨折情况的能力。结果:52例X线平片中未显示骨折的患者,通过MSCT后处理技术49例显示骨折,其中眼眶骨折9例,脊柱骨折12例,髋关节骨折7例,胫骨平台骨折9例,腕骨骨折2例,跟骨骨折3例,肩胛骨骨折1例,肋骨骨折6例。排除骨折3例,阳性率94.2 %。结论:MSCT后处理技术对隐匿性骨折能够准确地作出诊断,为临床选择治疗方案及预后评估提供可靠依据。

Postprocessing of multi-slice spiral CT in the diagnosis of occult fracture

Objective:To evaluate the multi-slice spiral CT(MSCT) postprocessing technique in the diagnosis of occult fractures. Methods:The MSCT was performed in 52 patients whose X-ray results were negative but highly suspected as occult fractures by clinicians;the raw data of all the cases were processed respectively by image reconstruction including multiple planar reconstruction, maximum intensity projection and volume rendering technique;then the results were compared. Results:Of the 52 patients presenting non-fracture by X-ray,49 were proved fractures by postprocessing technique:9 cases in the orbital,12 cases in the spine,7 in the hip joint,9 in the tibial plateau,2 in the Carpal bone,3 in the calcaneal,1 in the shoulder blade and 6 in the rib. The MSCT images of the other 3 cases showed negative. The positive rate reached 94. 2%. Conclusions:MSCT can make accurate diagnosis of occult fractures, and provide reliable basis for the selection of therapy project and estimation of the prognosis.