目的探讨常规超声（US）检 查与磁共振成像(Magnetic Resonance Imaging,MRI)检查在肝脏局灶性病灶临床 诊断中应用价值。方法 2013年1月至2014 年12月对78例经肝细胞穿刺活检或术后病 理组织检查确诊为的肝脏局灶性病灶分别 行US检查及MRI检查，分析两种诊断方法 准确率，病灶大小数目及患者在US及MRI 中的影像学特征。结果 US在诊断肝脏良 性病变中的符合率与MRI相当(P>0.05)， 而在恶性肿瘤诊断中MRI组诊断准确率 显著高于US组(P<0.05)。MRI组在直径 ≤1cm微小肿瘤诊断中的符合率大于US组 (P<0.05)。与肝炎型假瘤、肝局灶性增生 结节、肝血管瘤患者相比，原发性肝癌、 转移性肝癌患者MRI始消时间及持续时间 更长(P<0.05)。结论 与US相比，MRI对肝 脏局灶性病灶的诊断率更加准确，更尽早 分辨出恶性病灶及微小病灶。且不同性质 的肝脏局灶性病灶在MRI中表现出不同的 增强方式，能有效鉴别不同种类的肝脏局 灶性病灶。

Objective To investigate the application of Discussion conventional ultrasound (US) examination and MRI (Magnetic Resonance Imaging, MRI) examination in the clinical diagnosis of focal liver lesions. Methods 78 cases of hepatic cells or pathological tissue biopsy diagnosed as focal liver lesions were underwented with US examination and MRI examination from January 2013 to December 2014. Results The fairly consistent rate of benign liver lesions of US and MRI were no significantly(P>0.05), while the cancer diagnosis diagnostic accuracy of MRI group was significantly higher than in the US group (P<0.05).The line with the rate of tumor diagnosis in ≤1cm of MRI group were greater than the US group (P<0.05).The start time and duration longer elimination of liver cancer were longer than hepatitis type pseudotumor, liver focal nodular hyperplasia, hemangioma (P<0.05). Conclusion Compared with US, MRI diagnosis of focal liver lesions rate is more accurate and more to distinguish malignant lesions and small lesions as early as possible. And focal liver lesions of different nature in MRI showed different enhancement approach can effectively identify the different types of focal liver lesions.