磁共振扩散加权成像在肝脏占位性病变诊断中的应用  

The Application of Diffusion Weighted Imaging in Hepatic Lesions

作　　者：李晓娟[1] 刘志兰[1] 何冰峰[1] 

机构地区：[1]哈尔滨医科大学第一临床医学院磁共振中心,黑龙江哈尔滨150001

出　　处：《实用放射学杂志》2006年第7期814-816,共3页Journal of Practical Radiology

基　　金：黑龙江省自然基金资助项目(D0337)

摘　　要：目的探讨MR扩散加权成像(DW I)及ADC值对肝脏占位性病变的诊断价值。方法原发性肝细胞癌36例,转移瘤15例,肝血管瘤33例,肝囊肿12例进行MR I平扫及DW I,拟合出ADC图,选取病灶感兴趣区,测出ADC值,进行量化分析。结果肝脏占位性病变的平均ADC值如下:肝囊肿(2.90±0.68)×10-3mm2/s,血管瘤(2.01±0.53)×10-3mm2/s,转移瘤(1.57±0.42)×10-3mm2/s,原发性肝细胞癌(1.20±0.32)×10-3mm2/s。肝脏良性病变的ADC值明显高于恶性肿瘤,并有显著性差异(P<0.05)。结论通过对肝脏不同病变的ADC值进行量化分析,能为肝脏占位性病变的定性诊断提供重要依据。Objective To study the applied value of MR DWI and ADC value of in the hepatic lesions . Methods 3 6 cases of hepatocellular carcinoma, 15 cases of metastases, 33 cases of hepatic cavernous hemangioma and 12 cases of cyst were examined by DWI and conventional MRI , then the ADC values were measured . Results The average ADC values of hepatic lesions were as follows ： cyst was （2.90 ±0.68 ） × 10^ -3mm^2/s, hemangioma was（ 2.01 ± 0.53 ） × 10^ -3mm^2/s,metastases was（ 1.57 ± 0.42 ） × 10^ -3 mm^2/s,hepatocellular carcinoma was （ 1.20 ± 0.32 ） × 10^ - 3 mm^2/s. The ADC values of benign lesions were higher than those of malignant （ P 〈 0.05 ）. Conclusion The ADC values may help in differentiating benign from malignant hepatic lesions.

关 键 词：肝脏肿瘤 磁共振成像 弥散加权成像 

分 类 号：R575[医药卫生—消化系统] R445.2[医药卫生—内科学]