螺旋CT对4级及以下支气管扩张易漏诊研究

Spiral CT Could Easily Lead to Missed diagnosis of Grade 4 and Below Bronchiectasis

目的 通过对螺旋 CT薄层扫描及选择性支气管造影诊断支气管扩张作对比研究 ,了解螺旋 CT诊断支扩的优劣。方法 以选择性支气管造影作为金标准 ,将螺旋 CT诊断结果与造影法对比。结果 对 3级及以上支气管扩张 ,螺旋 CT诊断的敏感性 96 .8% ,特异性 10 0 % ;但如果对所有级别支气管扩张 ,螺旋 CT明显较造影法诊断率低 ,两者有显著性差异 (P<0 .0 2 5 )。对诊断支气管扩张中放射科医师意见的分歧率 ,造影法明显小于螺旋 CT诊断法 (P<0 .0 1)。结论 对 4级及以下支气管扩张 ,螺旋

Objective To compare good and bad of spiral CT and selective bronchography when diagnosing bronchiectasis.Methods Results of spiral CT were compared with golden standard-bronchography.Results For grade 3 and above,the sensitivity and selectivity of spiral CT were 96.8% and 100%,respectively;but for grade 4 and below,the sensitivity and selectivity of spiral CT were significantly lower than of bronchography(P<0.025),and this was also true of the difference rate of radiologists(P<0.01).Conclusion Spiral CT could lead to missed diagnosis when diagnose grade 4 and below bronchiectasis.