肝海绵状血管瘤磁共振与彩色超声诊断对比分析(附58例报告)

目的探讨彩色声超和MRI在肝脏海绵状血管瘤诊断中的价值。方法用彩超和MRI分别对58例肝海绵状血管瘤进行检查,并对两种检查结果进行对比分析。结果58例肝脏海绵状血管瘤彩超表现高回声36例,混合回声14例,等回声和低回声8例。MRI表现SE序列T1WI为低信号或稍低信号T2WI为高信号或较高信号;GRE序列重T2WI均显示为明亮的高信号。MRI增强扫描快速充盈25例,周边呈结节型强化19例,中心扩散型14例,延时扫描为均匀明显强化。结论随着血管瘤直径的增大,彩超显示高回声占的比例逐渐减少,而混合回声和低回声占的比例逐渐增多;MRI增强扫描显示周边呈结节型强化占的比例越来越大,而快速充填型占的比例越来越小。

Cavernous hemangioma of liver: a comparative study of MRI and color Doppler ultrasound (with 58 case report)

Objective To evaluate MRI and the color Doppler ultrasound in the diagnosis of cavernous hemangioma of liver. Methods In total 58 patients with hemangioma of liver underwent dynamic enhanced MRI and the color Doppler ultrasound examination. The imaging manifestations obtained by both modalities were comparatively studied. Result Highly echoic lesions were revealed in 36 cases out of 58; low echoic lesions were noted in 8; and in 14 cases the tumors were of mixed echoic. On T1WI the lesions were hypo- or slightly hypo- intense; while on T2WI they were hyper- or slightly hyper- intense. The nidi were hyper- intense on T2WI of CRE array. On enhanced scan the lesions were quickly fully enhanced in 25 cases out of 58. Peripheral nodular enhancement was seen in 19 cases, and centered spreading enhancement was demonstrated in 14 cases. On delayed scan remarkable homogenous enhancement was observed in all cases. Conclusion The bigger size has the hemangioma, the smaller highly echoic proportion and bigger mixed echoic or poorly echoic proportion will be found within the lesions. More peripheral nodular enhancement will be revealed on enhanced MRI scan when the tumor size is getting larger, in which the proportion of quickly fully enhancement will decrease gradually. Ultrasound is better than MRI in the evaluation of the liver hemangioma smaller than 3 cm in diameter. MRI is superior to color Doppler ultrasound in diagnosing the lesion larger than 3 cm in diameter.