目的探讨低剂量容积数据高分辨率CT(VHRCT)应用于肺部体检扫描的最佳参数。方法将本院2013年10月至2015年7月500名肺部健康体检者简单随机化分成5组,各组100名,管电流分别为常规剂量220 m A和低剂量35 m A、30 m A、25 m A、20 m A,管...目的探讨低剂量容积数据高分辨率CT(VHRCT)应用于肺部体检扫描的最佳参数。方法将本院2013年10月至2015年7月500名肺部健康体检者简单随机化分成5组,各组100名,管电流分别为常规剂量220 m A和低剂量35 m A、30 m A、25 m A、20 m A,管电压均为120 k V扫描,容积数据进行薄层高分辨率算法重组,以能显示肺小叶水平上的细微结构和病变以及大血管的边界为保证诊断质量的图像。记录各组受检者的照射剂量,对不同低剂量管电流和常规剂量的VHRCT图像进行统计学分析。结果 35 m A、30 m A、25 m A、20 m A低剂量与常规剂量220 m A相比,受检者的照射剂量分别下降85.64%、87.86%、90.24%、92.53%。35 m A、30 m A、25 m A和220 m A常规剂量VHRCT图像比较差异均无统计学意义(P<0.05),20 m A和常规剂量比较差异有统计学意义(P<0.05)。结论 25 m A的管电流可作为低剂量容积数据高分辨率CT应用于肺部体检的参考条件。展开更多
The introduction of coronavirus disease-2019(COVID-19)as a global pandemic has contributed to overall morbidity and mortality.With a focus on understanding the immunology and pathophysiology of the disease,these featu...The introduction of coronavirus disease-2019(COVID-19)as a global pandemic has contributed to overall morbidity and mortality.With a focus on understanding the immunology and pathophysiology of the disease,these features can be linked with the respective findings of imaging studies.Thus,the constellation between clinical presentation,histological,laboratory,immunological,and imaging results is crucial for the proper management of patients.The purpose of this article is to examine the role of imaging during the particular stages of severe acute respiratory syndrome coronavirus 2 infection–asymptomatic stage,typical and atypical COVID-19 pneumonia,acute respiratory distress syndrome,multiorgan failure,and thrombosis.The use of imaging methods to assess the severity and duration of changes is crucial in patients with COVID-19.Radiography and computed tomography are among the methods that allow accurate characterization of changes.展开更多
文摘目的探讨低剂量容积数据高分辨率CT(VHRCT)应用于肺部体检扫描的最佳参数。方法将本院2013年10月至2015年7月500名肺部健康体检者简单随机化分成5组,各组100名,管电流分别为常规剂量220 m A和低剂量35 m A、30 m A、25 m A、20 m A,管电压均为120 k V扫描,容积数据进行薄层高分辨率算法重组,以能显示肺小叶水平上的细微结构和病变以及大血管的边界为保证诊断质量的图像。记录各组受检者的照射剂量,对不同低剂量管电流和常规剂量的VHRCT图像进行统计学分析。结果 35 m A、30 m A、25 m A、20 m A低剂量与常规剂量220 m A相比,受检者的照射剂量分别下降85.64%、87.86%、90.24%、92.53%。35 m A、30 m A、25 m A和220 m A常规剂量VHRCT图像比较差异均无统计学意义(P<0.05),20 m A和常规剂量比较差异有统计学意义(P<0.05)。结论 25 m A的管电流可作为低剂量容积数据高分辨率CT应用于肺部体检的参考条件。
文摘The introduction of coronavirus disease-2019(COVID-19)as a global pandemic has contributed to overall morbidity and mortality.With a focus on understanding the immunology and pathophysiology of the disease,these features can be linked with the respective findings of imaging studies.Thus,the constellation between clinical presentation,histological,laboratory,immunological,and imaging results is crucial for the proper management of patients.The purpose of this article is to examine the role of imaging during the particular stages of severe acute respiratory syndrome coronavirus 2 infection–asymptomatic stage,typical and atypical COVID-19 pneumonia,acute respiratory distress syndrome,multiorgan failure,and thrombosis.The use of imaging methods to assess the severity and duration of changes is crucial in patients with COVID-19.Radiography and computed tomography are among the methods that allow accurate characterization of changes.
