多层螺旋CT及后处理技术对肋骨骨折的诊断价值

Diagnostic Value of Three-access MSCT Imaging for Rib Fracture

目的对多层螺旋CT(MSCT)轴位与两种图像后处理技术在肋骨骨折诊断中的价值进行探讨,评价肋骨骨折较佳检查时间和方法。方法收集2014年11月至2018年10月共138例存在胸部外伤并诊断有肋骨骨折且于伤后1周内、伤后第2、4、8周行MSCT检查的伤者的影像资料,对三种影像学方法在不同时间检出的肋骨骨折数量进行比较分析。结果138例样本肋骨骨折共542处,伤后1周内CT轴位、多平面重组(MPR)、三维容积再现技术(3DVR)提示骨折为500处、512处、457处;伤后第2周三种方法提示骨折为538处、541处、527处;伤后第4周三种方法提示骨折为541处、542处、541处;伤后第8周三种方法均提示骨折542处。结论三种方法对伤后1周内肋骨骨折数量的诊断不完全准确,MPR检出率最高;伤后第4~8周三种方法间无显著差异,检出率基本达到100%。

Objective To explore the diagnostic value of three-access MSCT(multislice spiral computed tomography)imaging for rib fracture so as to evaluate the appropriate examination time and methodical choice.Methods The MSCTimaging materials were collected with 138 cases of thoracic trauma plus rib fracture photographed between November 2014 and October 2018.The collected imaging materials were the ones from MSCT examinations performed within 1 week after injury and those of post-injury 2,4 and 8 weeks.The amounts of rib fracture were individually noted out from the detection through three-access MSCT imaging choices at different time after injury.Results A total of 542 rib fractures were detected in the 138 samples,with ones from CT axial position,MPR(multi-planner reformatting)and 3DVR(three-dimensional volume rendering)respectively indicating 500,512 and 457 counts within 1 week after injury.Further,the above three-access MSCT imaging choices showed 538,541 and 527 fractures that were examined for post-injury 2 weeks,consecutively having for post-injury 4 weeks brought out 541,542 and 541 fractures and for post-injury 8 weeks all demonstrated 542 fractures.Conclusions The three-access MSCT imaging choices are not completely accurate in diagnosing the amount of rib fractures within 1 week after injury.The MPR is of highest detection rate.There is no significant difference among the three-access MSCT imaging choices during 4 to 8 weeks after injury,with the 100% detection rate being basically reached.