多层螺旋CT低剂量扫描及后处理技术在鼻骨骨折诊断中的应用

Utilization of Low-dose Multislice CT and Different Post-processings in Patients with Suspected Nasal Bone Fracture

目的:探讨多层螺旋CT低剂量扫描及后处理技术在鼻骨骨折诊断中的应用价值。材料与方法:收集49例经临床证实有鼻骨骨折患者的MSCT资料,其中30例为低剂量扫描,19例为常规剂量扫描,分别对2组图像资料观察分析。结果:30例低剂量扫描患者中,MSCT显示鼻骨骨折25例,检出率为83.3%。19例常规剂量扫描患者中,MSCT显示鼻骨骨折16例,检出率为84.2%,两者差异无统计学意义(P>0.05)。结论:MSCT低剂量扫描与常规剂量扫描在鼻骨骨折的显示方面差异无统计学意义,可以显示骨折的形态、断端移位情况,对手术定位起到了指导作用,而且大大降低了射线剂量,怀疑鼻骨骨折的患者CT检查应优先使用低剂量扫描。

Purpose:To explore the practical value of postprocessing technique of low-dose multislice CT in the diagnosis of nasal bone fracture.Materials and Methods:MPR,SSD were performed in 49patients with suspected nasal bone fracture.Thirty were scanned with low-dose,the others were scanned with conventional dose.Results:Twenty-five cases were diagnosed have nasal bone fracture in those scanned with low-dose,the positivity is 83.3%.Sixteen cases were diagnosed nasal bone fracture in those scanned with conventional dose,the positivity is 84.2%.Conclusion:There was no obviously difference between using low-dose and conventional dose,It can show the nasal bone fracture visually,three-dimensionally,clearly and from muti-angles,which has special superiority in diagnosis of nasal bone fracture and high value in judging prognosis,low-dose should be used priority.