摘要
目的探讨低剂量CT扫描在外伤胸痛患者胸部检查中的应用价值。方法 78例因外伤胸痛行CT胸部扫描的患者随机分成2组,分别行低剂量螺旋CT扫描和常规剂量螺旋CT扫描,测量、计算并评估2组患者的图像主观质量评分和患者接受的辐射剂量指标:CT剂量指数(CTDI)、剂量长度乘积(DLP)、有效剂量(ED)。结果低剂量组与常规剂量组图像主观质量评分之间差异无统计学意义(P>0.05),图像均能满足诊断需求。低剂量组与常规剂量组的CTDI、DLP以及ED之间差异均有统计学意义(P<0.05),随管电流量的下降,辐射剂量下降。结论通过降低管电流量进行胸部CT检查的方法是可行的,既能获得满足临床诊断的合格图像,又能明显降低患者群体接受的辐射剂量。
Objective To investigate the value of low-dose CT scans in chest inspection in patients with chest pain caused by traumatic. Methods 78 cases of patients with chest pain caused by traumatic were divided into low-dose group and conven- tional group groups randomly. The patients of 2 groups were underwent low-dose CT scan and conventional-dose CT scan respec- tively. The score of subjective diagnosis and the indexes of radiation dose, including CT dose index （CTDI）, dose length product （DLP）, and effective dose （ED） were measured, calculated and assessed respectively on CT images of the two groups. Results Score of subjective diagnosis of 2 groups CT images were not statistically significant （ P 〉 0. 05 ） while the indexes of radiation dose, including CTDI, DLP, and ED of CT images were significantly different from each other in 2 groups （ P 〈 0. 05 ）. The radia- tion dose is reduced with the decrease of tube current. Conclusion The method of decreasing tube current in chest CT inspection can be acceptable. Low-dose CT scans in chest inspection can fulfill the need of diagnosis, while the radiation dose of patients is apparently lower than the conventional scan.
出处
《四川医学》
CAS
2013年第12期1920-1922,共3页
Sichuan Medical Journal
关键词
低剂量
CT
胸部
low dose
computed tomography
chest
