超声造影与增强CT在腮腺肿块诊断中的价值比较

Value comparative of contrast-enhanced ultrasound and enhanced CT in the diagnosis of parotid tumor

目的比较超声造影与增强CT对腮腺良、恶性肿块的诊断价值。方法对48例75个腮腺肿块进行超声造影及增强CT检查,评价两种方法的检出率、诊断效能并分析误诊原因。结果超声造影及增强CT对肿块检出率分别为100%,86.7%。超声造影对肿块的敏感度为91.7%,特异度为95.2%,准确度为94.7%,阳性预测值为78.6%,阴性预测值为98.4%;增强CT对应值分别为75%,79.4%,76.8%,40.9%,94.3%。超声造影误诊4个(3个良性病变,1个恶性病变);增强CT误诊6个(3个良性病变,3个恶性病变),漏诊10个良性病变。结论超声造影可以实时反映肿块内部的血流灌注情况,具有较好的检出率及诊断效能,可作为首选影像学检查。

Objective To compare the diagnostic value of contrast-enhanced ultrasound and enhanced CT in the qualitative diagnosis of benign and malignant salivary masses.Methods Contrast-enhanced ultrasound and enhanced CT examination were performed on 48 cases of 75 parotid glands.The detection rate and diagnostic efficiency of the two methods were evaluated and the causes of misdiagnosis were analyzed.Results The detection rates of contrast-enhanced ultrasound and enhanced CT were 100%and86.7%,respectively.The sensitivity,specificity,accuracy,positive predictive value and negative predictive value of contrast-enhanced ultrasound were 91.7%,95.2%,94.7%,78.6%,98.4%and 75%,79.4%,76.8%,40.9%,94.3%respectively.4 cases were misdiagnosed by contrast-enhanced ultrasound(3 benign lesions,1 malignant lesion),6 cases were misdiagnosed by contrast-enhanced CT(3 benign lesions,3 malignant lesions),and 10 cases were misdiagnosed by missed diagnosis.Conclusion Contrast-enhanced ultrasound can reflect the blood perfusion of the mass in real time,and has a good detection rate and diagnostic efficiency,which can be used as the preferred imaging examination.