摘要
目的：探讨肝脏微小局灶性病变（最大径≤2cm）的实时超声造影诊断价值.材料和方法：对205个≤2cm肝脏局灶性病变分别进行实时超声造影及常规超声检查,将诊断结果分为良性、恶性和不能确定,最终诊断经病理学、同期其他影像及实验室检查证实,并随访10～30个月.结果：恶性肿瘤65个病灶,良性病灶140个.与病理诊断比较,超声造影诊断的敏感性、特异性及准确性分别为85.0%、90.5%及88.5%,常规超声分别为40.0%、47.6%及42.6%.病灶动脉期高增强及门静脉期或延迟期低增强为诊断恶性的重要指标.结论：实时超声造影技术对鉴别诊断肝脏微小（≤2cm）局灶性病变具有重要的临床应用价值.
Purpose： As the technology advanced, smaller liver lesions（≤2 cm） could be detected with ultrasound, especially when contrast-enhanced ultrasound was used. Materials and Methods： 205 focal liver lesions （FLLs） were diagnosed with contrast-enhanced and conventional ultrasound. The final diagnosis was confirmed by biopsy, contrast-enhanced CT or MRI, laboratory examinations and 10 to 30 months follow up. Results： There were 65 malignant tumors and 140 benign FLLs. Compare to the pathological diagnosis, the sensitivity, specificity and accuracy of CEUS were 85.0% , 90.5% and 88.5% , higher than that of conventional ultrasound （40.0% , 47.6% and 42.6%, respectively）. The most outstanding sign of malignancy was a hyper-enhancement at arterial phase with hypo-enhancement at portal and later phase after contrast agent injection. Conclusion：Real-time CEUS is an effective imaging modality in diagnosis of small focal liver lesions （ ≤2 cm）.
出处
《中国医学影像学杂志》
CSCD
2007年第3期161-164,共4页
Chinese Journal of Medical Imaging
基金
军队"十五"课题基金资助项目(434519B)
关键词
超声造影
肝脏
局灶性病变
微小
诊断
contrast enhanced ultrasound
focal liver lesion
small
diagnosis
