The DWI liver cancer Clinical Analysis
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摘要:
目的探讨磁共振扩散加权成像在肝脏肿瘤性病变中的诊断价值。 方法对180肝脏肿瘤进行常规MRI平扫和扩散加权成像，表观扩散系数（b值）分别为0 s/mm2和1000 s/mm2，测量病变的表面扩散系数（ADC）值，65肝脏肿瘤同时进行了多期增强扫描。 结果肝癌、肝脏转移瘤患者病变区的ADC值分别为（1.12±0.23）×10-3 mm2/s、（1.51±0.43）×10-3mm2/s；肝囊肿、肝脏血管瘤患者病变区的ADC值分别为（2.43±0.68）×10-3 mm2/s、（1.99±0.78）×10-3 mm2/s；肝脏良性病变与恶性病变区域内的ADC值差异有统计学意义（P < 0.05）。 结论磁共振弥散成像对肝脏肿瘤的诊断具有很大的价值，特别是对肝脏良恶性的鉴别诊断有一定的价值。 Abstract:Objective DWI lesions in the liver tumor diagnosis. Methods A total of 180 cases of liver tumors unenhanced routine MRI and diffusion-weighted imaging, apparent diffusion coefficient (b value) were 0 s/mm2 and 1000 s/mm2, measurement of lesions on the surface diffusion coefficient (ADC) values, 65 patients with liver tumors simultaneous multi-phase scan. Results Liver cancer, liver metastases in patients with lesions of the ADC values were (1.12±0.23)×10-3 mm2/s, (1.51±0.43)×10-3 mm2 /s; liver cyst, liver lesions in patients with vascular tumors ADC values were (2.43±0.68)×10-3 mm2/s, (1.99±0.78)×10-3 mm2/s; benign and malignant liver lesions in the region ADC values were significantly (P < 0.05). Conclusion MR diffusion imaging diagnosis of liver tumors of great value, especially for the differential diagnosis of benign and malignant liver has a certain value. -
图 1 原发性肝癌的MRI成像
A:脂肪抑制序列（STIR）; B:增强横断位; C:DWI图;A 肝脏右叶后段类圆形肿瘤, 呈不均匀高信号, 边界清晰; B 肝右叶肿瘤增强呈 不均匀强化, 边缘强化明显; C DWI上病灶呈高信号.
图 2 肝脏转移瘤MRI成像
A:脂肪抑制序列（STIR）; B:增强横断位; C: DWI图; A 肝脏内多发类圆形异常信号, 边缘呈高信号, 其中心可见点状高信号, 呈 典型的'牛眼征'; C肝脏内肿块增强呈明显环形强化, 中心轻度强化，肝脏边缘呈斑片状强化; C DWI病灶呈高信号.
图 3 肝脏血管瘤MRI成像（A: STIR；B: 增强动脉期；C: 增强扫描延迟器图像）
A: 肝脏右叶后段病灶, 呈明显高信号, 边界清晰; B: 动脉早期造影剂少量进入, 病灶呈边缘强化, 呈向心性; 门脉期造影剂全部充填, 病灶明 显均匀强化.
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