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目的:探究MRI弥散加权成像(DWI)及动态增强扫描技术在肝脏占位性病变中的应用价值。方法:回顾性分析我院2015年10月至2017年2月收治的82例肝脏占位性病变患者的临床资料,均进行了MRI平扫、动态增强以及DWI检查。结果:(1)肝脏良性肿瘤的ADC值均明显高于肝脏恶性肿瘤(p<0.05),且肝囊肿的ADC值明显高于肝血管瘤,但原发性肝癌与肝转移瘤的ADC值无明显的差异(p>0.05);(2)在增强扫描方面,11例肝囊肿患者均未见明显强化,而有12例肝血管瘤患者的动态增强曲线呈Ⅲ型,23例肝转移瘤患者呈Ⅱ型;22例原发性肝癌呈Ⅰ型。结论:MRI DWI对肝脏良恶性肿瘤的鉴别诊断具有较高的价值,可将其作为肝脏病变MRI检查的常规序列之一,辅助MRI平扫及动态增强扫描,提高肝脏占位性病变的诊断准确率。
Objective: To explore the value of MRI diffusion-weighted imaging (DWI) and dynamic contrast-enhanced scanning in liver space-occupying lesions. Methods: The clinical data of 82 patients with liver space-occupying lesions who were treated in our hospital from October 2015 to February 2017 were analyzed retrospectively. All patients underwent MRI scan, dynamic contrast enhancement and DWI examination. Results: (1) The ADC value of benign liver tumors were significantly higher than that of hepatic malignancies (p <0.05), and the ADC values of hepatic cysts were significantly higher than those of hepatic hemangiomas. However, the ADC values of primary liver cancer and hepatic metastases (P> 0.05). (2) In the enhanced scan, no significant enhancement was observed in 11 cases of hepatic cysts, while the dynamic enhancement curve of 12 cases of hepatic hemangioma was type Ⅲ. Twenty-three patients with liver metastases Was type Ⅱ; 22 cases of primary liver cancer was type Ⅰ. Conclusion: MRI DWI is of great value in the differential diagnosis of benign and malignant liver tumors. It can be used as one of the routine MRI examination of liver lesions to assist MRI plain scan and dynamic contrast-enhanced scanning to improve the diagnostic accuracy of liver space-occupying lesions rate.