超声结合CT对局限性脂肪肝的诊断

Diagnosis of focal fatty liver by ultrasound combined with CT

目的:探讨超声结合CT对局限性脂肪肝的诊断价值。方法:分析35例局限性脂肪肝患者的超声及CT影像资料,评价两种影像学方法对局限性脂肪肝的诊断率。结果:35例局限性脂肪肝患者,单凭超声检查即可确诊27例,确诊率77.1%,单凭CT检查可确诊30例,确诊率85.7%,两种影像方法检查可全部确诊,确诊率100%,两种方法联用的确诊率与单用超声或单用CT比较,差别有统计学意义(P<0.05)。超声检查病灶处肝细胞内脂肪组织回声界面增多及声阻抗增大,脂肪组织密度较正常肝组织的密度小。CT图像上局限性脂肪肝呈低密度灶。结论:超声结合CT明显提高局限性脂肪肝的确诊率。

Objective：To investigate the value of ultrasound combined with CT in diagnozing focal fat- ty liver. Methods：Ultrasound and CT image data were collected from 35 patients with focal fatty liver. The diagnosis rate of two imaging methods for focal fatty liver were evaluated. Results：Ultrasonography alone could diagnose 27 of 35 patients with focal fatty liver, with diagnosis rate of 77.1%. CT examination alone could diagnose 30, and the diagnosis rate was 85.7 %. with both iraaging methods, all the patients were diagnosed, and diagnosis rate reached up to 100%. Diagnosis rate of two methods combination was higher than single use of ultrasound or CT, the difference was statistically significant（P〈0.05）. The adipose tissue in hepatic cells of lesions caused increasing of echo interface and acoustic impedance. The ultrasound reflection function increased and higher re sounding was showed in the sound image. Meanwhile, the density of adipose tissue was lower than that of the normal hepatic tissue, and the lesions in CT image showed lower density focus. Conclu sion. Diagnosis of focal fatty liver is significantly improved by ultrasound combined with CT.