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METHOD FOR EVALUATION OF RENAL VASCULAR PERFUSION USING POWER DOPPLER ULTRASONOGRAPHY
METHOD FOR EVALUATION OF RENAL VASCULAR PERFUSION USING POWER DOPPLER ULTRASONOGRAPHY
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机译：功率多普勒超声检查评估肾血管灌注的方法
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摘要
A method for evaluation of renal perfusion with power Doppler ultrasonography is disclosed in the present invention. Serial renal vascular images at different vascular areas including the whole vascular tree, interlobar, arcuate, and interlobular vessels were captured. Imaging processing software was designed to analyze the changes of power Doppler intensity of colored pixels within regions of interest (ROI). Power Doppler Vascularity index (PDVI) has been defined as the percentage of vascular perfusion within a region of interest (ROI). The renal vascular perfusion index (RVPI) is defined as the maximal power Doppler vascular index divided by minimal power Doppler vascular index (PDVImax/PDVImin) among the serial images. The mean of weighted power Doppler vascular index (WPDVImean) is defined as the average of the intensity of color pixels among the ROI within the serial images. By using the RVPI and WPDVImean, a more dynamic sense of vascular perfusion and a novel approach for the evaluation of renal vascular function in clinical practice can be provided.
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机译：本发明公开了一种用功率多普勒超声评价肾灌注的方法。捕获了不同血管区域（包括整个血管树，叶间，弓形和小叶间血管）的连续肾血管图像。成像处理软件旨在分析感兴趣区域（ROI）内彩色像素的功率多普勒强度的变化。功率多普勒血管指数（PDVI）已定义为感兴趣区域（ROI）内血管灌注的百分比。肾脏血管灌注指数（RVPI）定义为连续图像中最大功率多普勒血管指数除以最小功率多普勒血管指数（PDVI max / PDVI min ）。加权功率多普勒血管指数（WPDVI 平均值）的平均值定义为连续图像内ROI中彩色像素强度的平均值。通过使用RVPI和WPDVI mean ，可以提供更加动态的血管灌注感，并提供一种在临床实践中评估肾血管功能的新颖方法。
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