彩色多普勒超声诊断肾占位性病变的价值探讨

Study on the Value of Color Doppler Ultrasound in Diagnosing Renal Renal Mass

目的 探讨彩色多普勒超声诊断肾占位性病变的价值。方法 对 93例患者的 94个肾占位性病变的彩色多普勒血流显象 (CDFI)及血流参数情况进行了回顾性分析 ,血流参数主要包括肿瘤内动脉阻力指数 (RI)和峰值流速 (Vmax)。结果 直径小于 3cm的肾恶性肿瘤内部血流信号稀少 ,肿瘤周边有“血流绕行征” ,正常呈扇形分布的肾血管于病灶区中断消失。大于 3 0cm的肾恶性肿瘤内血管信号增多增粗 ,走行紊乱 ,其RI及Vmax均高于良性病灶 ,但当其直径大于 5 0cm时 ,其RI反而降低。结论 CDFI有助于提高肾内小占位病变的检出率。但定性诊断较困难。

Objective To study the value of color Doppler ultrasound in diagnosing renal mass.Method 94 renal lesions of 93 patients were studied retrospectively for observing the features of color Doppler flow imaging (CDFI) and pulse Doppler (PD).The hemodynamic parameters included resistance index (RI) and peak systolic velocity (Vmax) of the vessel inside the mass.Result The results showed that there were less flow signals within the small renal malignant tumors (diameter<3.0cm),and the “blood-vessel move round sign”on the edge of the tumor could be seen.The fan distribution of the renal vessels in normal kidney discontinued or disappeared within the lesions.Howere there were more vessels with thick wall in large malignant tumors (diameter>3.0cm) than in small ones.The RI and Vmax of the vessels in malignant tumors were much higher than in benign lesions,but when the diameter of the tumor was equal to or more than 5.0cm,the RI reduced conversely.Conclusion CDFI is helpful in detecting the small renal mass ,but it is difficult to judge the mass's pathology.