DWI和ADC值测量在肝脏囊性占位性病变鉴别诊断中的应用价值  

The value of DWI and ADC values in the differential diagnosis of liver cystic lesions

作　　者：任燕[1] 张莉[1] 钱伟伟[1] 孙西浚[1] 陈照徽[1] 杨婷[1] 姜晓萍[1] 

机构地区：[1]甘肃省兰州市第二人民医院CT/MRI影像科,甘肃兰州730046

出　　处：《中国现代医生》2013年第7期92-94,97,共4页China Modern Doctor

摘　　要：目的探讨磁共振扩散加权成像(DWI)和表观扩散系数(ADC)值对肝脏囊性占位性病变的鉴别诊断价值。方法对40例肝囊肿、25例肝脓肿及27例囊变或坏死的肝肿瘤行DWI扫描,对比分析其DWI及ADC图表现,测量肝囊肿、肝脓肿、囊变或坏死的肝肿瘤的囊腔的ADC值及肝脓肿、囊变或坏死的肝肿瘤的壁的ADC值,进行统计学分析。结果肝囊肿、肝脓肿及囊变坏死的肝肿瘤的囊腔的ADC值分别为(3.42±0.34)×10-3mm2/s、(0.74±0.4)×10-3mm2/s、(2.27±0.35)×10-3mm2/s,三者之间差异有统计学意义(P<0.05);肝脓肿及囊变坏死的肝肿瘤的壁的ADC值分别为(1.78±0.31)×10-3mm2/s、(1.41±0.26)×10-3mm2/s,两者之间差异有统计学意义(P<0.05)。结论 DWI结合ADC值测量可作为鉴别肝囊肿、肝脓肿及囊变或坏死的肝肿瘤的一种有用的诊断方法。Objective To explore the value of diffusion weighted imaging （DWI） and apparent diffusion coefficient （ADC） in the differential diagnosis of liver cystic lesions. Methods A total of 40 cases of hepatic cyst, 25 cases of liv- er abscess and 27 cases of cystic and/or necrotic tumor of liver were examined by DWI. DWI and ADC picture find- ings in both group patients were comparatively analyzed. ADC values of the cavities in both group patients and of the wall thickness in the liver abscess and cystic and/or necrotic necrotic tumor of liver were measured and statistically analyzed. Results There were significantly statistical different on ADC values（P 〈 0.01 ） in hepatic cyst（3.42±0.34）× 10-3 mm2/s, liver abscess （0.74±0.4）× 10-3 mm2/s and cystic and/or necrotic tumor of liver （2.27±0.35） ×10-3 mm2/s. The ADC values of the lesion＇s wall thickness showed there were significantly statistical differences （P 〈 0.01 ） between liver abscess （1.78±0.31）×10-3 mm2/s and cystic and/or necrotic tumor of liver （1.41±0.26）×10-3 mm2/s. Conclusion The DWI and the measurement of ADC value can distinguish between hepatic cyst,liver abscess and cystic and/or necrotic tumor of liver effectively.

关 键 词：弥散加权成像 表观扩散系数 肝脏局灶性病变 肝脓肿 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学]