摘要
目的：探讨3.0T MRI在肝癌随访中检出新发微小癌灶的价值。方法：对经治疗后并有病理证实的肝癌进行长期MR跟踪随访，采用3.0T MR平扫、DWI及动态增强（DCE）检查，对由病理和临床诊断的17例共23个新发的微小癌灶（MHCC）的MRI特点进行回顾性研究。结果：23个新发MHCC均＜1.0 cm，在T2WI上为略高信号结节；小、大b值DWI高信号者分别为23个、19个；DCE显示富动脉血供结节21个，其中16个呈“快进快退”， 5个呈“快进慢退”；乏血供结节2个，增强各期未见强化；10个结节（≥0.7 cm）在平衡期有“强化的假包膜征”。结论：3.0T MRI多种技术的联合使用在诊断新发MHCC方面有很高的应用价值。
Abstract
Objective: To study the value of 3.0T MRI in finding new micro-hepatocellular carcinoma(MHCC) lesions during follow-up examination. Methods: Seventeen patients who were confirmed by pathology to be hepatocellular carcinoma and were follow-up by MRI for long term after treatment. All of these cases had conventional MRI, DWI and dynamic contrast enhance(DCE) MRI examination on a 3.0T MR system. Among them there were 23 newly found MHCC, these lesions were confirmed by clinical and short term follow-up. The MRI features of these lesions were studied retrospectively. Results: The 23 MHCC＜1.0 cm showed slightly high signal on T2WI, 23 and 19 lesions showed high signal on small and large b value DWI respectively, 21 lesions showed rich blood supply on DCE among these lesions, 16 lesions showed the characteristic “fast in and fast out” feature, 5 lesions showed “fast in and slow out” feature, lack of blood supply in 2 lesions which showed no enhancement on different phases of DCE, 10 nodules(≥0.7 cm) showed pseudocapsule enhancement on equilibrium phase. Conclusion: Combination of different sequences using 3.0T MR system has important clinical application value in detecting newly appeared MHCC.
关键词
肝肿瘤 /
磁共振成像
Key words
Liver neoplasms /
Magnetic resonance imaging
霍英杰;袁 静;杨景震;王成健;张 玉;赵永强.
3.0T MRI在肝癌随访中检出新发微小癌灶的影像研究[J]. 中国临床医学影像杂志. 2014, 25(2): 98-102
HUO Ying-jie;YUAN Jing;YANG Jing-zhen;WANG Cheng-jian;ZHANG Yu;ZHAO Yong-qiang.
The value of 3.0T MRI in detecting new micro-hepatocellular carcinoma during follow-up examination[J]. Journal of China Clinic Medical Imaging. 2014, 25(2): 98-102
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