目的:探讨乏血供肝转移瘤超声造影(CEUS)血流灌注特点及其与CT增强扫描的差异.方法:选择CT增强扫描提示为乏血供肝转移瘤的12例(20个病灶)行常规超声及造影检查.二维超声观察病灶的部位、大小、边界、内部回声;CEUS观察病灶各期的强化模式、强化水平,重点观察动脉期(0～25 s),并与CT增强扫描进行比较.结果:12例共20个病灶,CT增强扫描动脉期:1个病灶轻度增强(5％),11个环形强化(55％),2个不均匀强化(10％),6个无强化(30％).CEUS动脉期:11个病灶弥漫性均匀强化(55％),7个环形强化(35％),2个不均匀强化(10％).结论:CEUS显示乏血供肝转移瘤动脉期血供情况优于CT增强扫描；对于CT增强扫描怀疑为乏血供肝转移瘤患者,尤其是单发转移瘤,CEUS检查对临床诊断和治疗有很大帮助.%Objectives To investigate the perfusion features of liver metastases of lack blood supply with contrast-enhanced ul-trasound(CEUS) ,comparing with contrast-enhanced CT(CECT). Methods: 12 patients(20 metastases)with liver metastases of lack blood supply pointed out by contrast-enhanced CT were examined with conventional ultrasound and CEUS. The location, size,boundary and echo of metastases were observed. Enhanced features,enhanced level of early arterial phase(0~25 s)were focused on,and compared with CECT. Results; Among 20 metastases of 12 patients, 1(5%)showed low-grade enhancement, 11 ( 55 %) showed ring enhancement,2(10%)showed inhomogeneous enhancement,6(30%)showed no-enhancement at CECT arterial phase. ll(55%)showed diffuse enhancement,7(35%)showed ring enhancement,2(10%)showed inhomogeneous enhancement at CEUS arterial phase. Conclusion: CEUS is better than CECT when observing the perfusion feature in early arterial phase for liver metastases of lack blood supply. CEUS is great helpful in the clinical diagnosis and treatment of the patients suspected of liver metastases of lack blood supply with CECT,especially only one lesion.
展开▼
