Clinical Application of the Kidney to Aortic Blood Flow Index (K/A Ratio)1

摘要: The kidney to aortic blood flow index (K/A ratio) is the ratio of slopes upstrokes renal and histograms, derived from regions interest applied sequential gamma camera images first transit a 99mTc bolus. This proved in our previous dog studies have good correlation with artery flow. In 190 clinical allografts reported here, K/A ratios correlate well independently established retrospective clinical-pathologic assessment functional status. Normal range for was 50 patients no demonstrable disease. Tests inter-observer reproducibility show mean relative standard deviation 7% performed analyses on same data.