16排螺旋CT低剂量扫描用于胸部创伤复查的临床研究

Clinical application of low dose 16-slice spiral CT in reexamination and diagnosis of thoracic trauma

目的探讨16排螺旋CT低剂量扫描用于胸部创伤复查的临床价值。方法选取2016年11月—2017年4月我院创伤外科收治的胸部创伤患者62例为研究对象,实施首次诊断使用常规剂量,复查使用低剂量CT扫描,比较两种方法辐射剂量、图像质量及诊断价值。结果低剂量检查患者CTDlvol、DLP水平显著低于常规剂量,差异具有统计学意义(P<0.05);两种诊断方法图像质量相比,常规剂量图像质量优于低剂量图像质量,低剂量复查图像噪点稍多,对诊断无明显的影响;低剂量CT复查图像对胸部创伤所致气胸、胸腔积液、胸挫伤、肋骨骨折征象显示良好,未出现漏诊或误诊。结论 16排螺旋CT低剂量扫描用于胸部创伤复查中,在大幅度降低患者辐射剂量的同时可得到临床医师所需的诊断图像,同时降低CT机球管损耗、延长其使用寿命,间接为医院降低了医疗设备成本。

Objective To investigate the clinical application value of low dose 16-slice spiral CT in reexamination and diagnosis of thoracic tranma.Methods 62 patients with thoracic trauma in surgical department from November 2016 to April 2017 were selected as the research object.They were given routine dose in the first diagnosis and low dose CT scanning in the reexamination.The radiation dose,image quality and diagnostic value of two methods were compared.Results The levels of CTDlvol and DLP in low dose scanning were lower than those in routine dose scanning （P〈0.05） ;The image quality of routine dose scanning was better than that of low dose scannir, g, the low dose scanning images have little more noise, but it did not affect the diagnosis,while the images of low dose scanning CT reexamination showed good on pneumothorax,pleural effusion,chest sprain,and rib fracture,and there was no missed diagnosis or misdiagnosis.Conclusion Low dose 16-slice spiral CT in reexamination of thoracic trauma can decrease radiation dose, achieve clear diagnostic image, reduce loss of CT globe tube, so as to indirectly lower the medical equipment cost for hospital.