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目的 :探讨多普勒超声在肾肿瘤血供诊断中的作用。方法 :应用多普勒超声技术检测 6 8例正常人和 4 2例肾肿瘤肾动脉及肿瘤血供。测量肾动脉收缩峰值速度 (PSV)、舒张末期流速 (EDV)、阻力指数 (RI)及峰值平均流速 (TAP) ,计算每分血流量 (VF)。测量瘤周、瘤内血流 PSV、 EDV、 RI,分别取平均值作为计测值。结果 :正常组两侧肾动脉血流参数比较差异无显著性 (P>0 .0 5 )。恶性组患侧肾动脉 PSV、 EDV、 VF高于健侧、良性组及正常对照组 (P<0 .0 1) ,而 RI均低于后三者 (P<0 .0 5 ) ,后三者各参数比较无明显差异 (P>0 .0 5 ) ;恶性组病灶区 PSV、 EDV明显高于良性组 ,差异有显著性 (P<0 .0 1) ,而其 RI较良性组低 (P<0 .0 5 )。结论 :肾肿瘤及其肾动脉血流动力学特征有助于良恶性肾肿瘤的诊断、鉴别
Objective: To investigate the role of Doppler ultrasound in the diagnosis of renal tumor blood supply. Methods: Doppler ultrasound was used to detect the blood supply of 68 normal subjects and 42 renal tumors and renal tumors. The PSV, EDV, RI and TAP were measured to calculate the fractional flow (VF). Measurement of tumor, tumor blood flow PSV, EDV, RI, respectively, take the average as the measured value. Results: There was no significant difference in renal blood flow parameters between two groups (P> 0.05). The PSV, EDV, VF of the ipsilateral renal artery in the malignant group were significantly higher than those in the healthy group, benign group and normal control group (P <0.01), but RI were lower than the latter three groups (P <0.05) (P> 0.05). The PSV and EDV in the malignant group were significantly higher than those in the benign group (P <0.01), while the RI in the malignant group was lower than that in the benign group P <0. 05). Conclusions: The hemodynamic characteristics of renal tumors and renal arteries are helpful for the diagnosis and differential diagnosis of benign and malignant renal tumors