肝肿瘤灰阶超声造影与彩色多普勒超声检查对比分析

目的 对比灰阶超声造影和彩色多普勒超声在诊断肝肿瘤中的应用价值.资料与方法 34例肝肿瘤患者分别行灰阶超声造影及彩色多普勒超声造影,对血流显示率、微血管血流显示率行临床监测及综合调查分析.结果 灰阶超声造影及彩色多普勒造影血流显示率分别为100.0％ (34/34)、91.2％ (31/34),差异无统计学意义(x2=1.39,P＞0.05)；微血管血流显示率分别为97.1％(33/34)与29.4％ (10/34),差异有统计学意义(x2=33.46,P＜0.01).结论 实时灰阶超声造影法具有对低速血流敏感、对肿瘤微血管的显示敏感、空间分辨力较好、不存在伪像等优势,可用于观察肿瘤实质内的微血管灌注,较多普勒造影法更有助于鉴别诊断肝肿瘤.

Comparison of Gray Scale Contrast-enhanced and Color Doppler Ultrasound in Diagnosis of Hepatic Tumor

Purpose To compare contrast enhanced ultrasonography and color Doppler ultrasound in evaluating patients with hepatic tumor. Materials and Methods 34 patients with hepatic tumor underwent contrast enhanced ultrasonography and color Doppler ultrasound examination. The clinical information was correlated with detection rate of blood flow and microvascular blood flow. Results Tumor blood flow was detected in 34 cases (100.0%) using contrast enhanced ultrasound and in 31 (91.2%) cases using color Doppler. There was no statistical significance (x2=1.39, P >0.05); contrast enhanced ultrasound demontrated microvascular blood flow in 33 cases (97.1%) significantly higer than color Doppler which showed microvascular blood flow in 10 patients (29.4%) (x2=33.46, P < 0.01). Conclusion Real-time gray scale harmonic imaging method is sensitive in demonstrating slow flow, tumor microvessel with better spatial resolution and no artifacts. This can be utilized for real time observation of microvascular perfusion within the tumor.