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目的:探讨磁共振扩散加权成像(DWI)对肝脏肿瘤的诊断价值。方法:对在本院接受上腹部核磁共振成像检查的40例患者资料进行回顾性分析,所有患者依据要求行上腹部平扫及扩散加权成像扫描,拟合表观扩散系数(ADC)图,并对测定值加以统计分析。结果:选择低B值差,所有患者ADC值均高于高B值差时ADC值,且伴随B值差增大,则ADC值减少。且B值=500 s/mm~2时,血管瘤及肝囊肿的ADC均高于转移瘤和原发性肝癌,差异具有统计学意义(P<0.01)。结论:应用ADC值可提高对肝脏肿瘤的诊断与鉴别能力。
Objective: To investigate the value of diffusion weighted imaging (DWI) in the diagnosis of liver tumors. Methods: The data of 40 patients undergoing upper abdominal MRI examination in our hospital were retrospectively analyzed. All patients were scanned with upper abdominal plain and diffusion-weighted imaging according to the requirements and fitted with apparent diffusion coefficient (ADC) maps. The measured values were statistically analyzed. Results: The ADC values of all patients were higher than those with high B values when the low B-value difference was selected. With the increase of B-value difference, the ADC values decreased. ADC values of hemangiomas and hepatic cysts were significantly higher than those of metastases and primary hepatocellular carcinoma at B value of 500 s / mm ~ 2 (P <0.01). Conclusion: The application of ADC value can improve the diagnosis and differentiation of liver tumors.