摘要
目的评估高分辨率CT(HRCT)对肺部结节性病变进行诊断时,准直器扫描宽度选择0.5和1mm对诊断结果的影响。方法设置准直器扫描宽度为0.5和1mm,分别对64例患者的73处肺部结节性病变进行扫描,从肺部结节性病变磨玻璃样密度的范围、病灶边界的清晰度、胸膜凹陷征、毛刺征、病灶内空泡征等5方面以McNemar检验进行检出率比较。结果准直器扫描宽度0.5和1mm的两组CT图像对统计指标检出的差异无显著性(P>0.05)。结论应用高分辨率CT对肺部结节性病变进行诊断,准直器扫描宽度设定为1mm可以满足诊断要求。
Objective This study aimed to evaluate the validity of 0.5 mm thin-section computed tomography （CT） for the assessment of pulmonarynodular lesion in comparison with 1 mm CT. Methods 73 focal lesions from 64 patients scanned with 0.5 and 1.0 mm collimation were evaluated regarding the extent of ground glass opacity （GGO） and well- defined margin, and the presence of pleural indentation, spicula, and internal air density. The frequency of each finding was statistically compared between 0.5 and 1 mm CT using the McNemar test. Results No statistically significant difference was observed between 0.5 and 1 mm CT for each finding. Conclusion For the diagnosis of pulmonary nodules using High-resolution CT （HRCT） , Collimator scan width is set to lmm meet the diagnostic requirements.
出处
《西部医学》
2014年第12期1686-1688,共3页
Medical Journal of West China
基金
湖北省科技攻关计划重点项目(2002A30703)
关键词
肺结节
诊断
High-Resolution CT
Pulmonary nodular lesion
Diagnosis
