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- W2361990668 abstract "Objective To discuss the value of CT perfusion imaging in diagnosis of renal tumors. Methods By applying a nuclear medicine data processing technique to the time-density data obtained from dynamic CT, perfusion was performed in 30 cases of nomal renal cortex and 36 cases of renal tumors, including 15 cases of renal cell carcinoma (RCC), 9 cases of renal pelvic carcinoma (RPC), 12 cases of renal agiomyolipoma (RAML). A single level through the renal hili or renal tumor was scanned after the intravenous injection of 40-50 ml of contrast given at 5 ml/s. Thirty 0.5 s duration and 0.5 s interval scans were performed from 8 to 37 s after injection. Time-density curves were then drawn for both normal kidneys or renal tumor and aorta using regions of interest (ROIs). Perfusion was calculated as the peak upslope of the tissue time-density curve divided by peak aortic enhancement. Results Normal renal cortal perfusion was (2.68±0.40) ml/(min·ml). Perfusion of RCC, RPC and RAML were (1.51±0.68) ml/(min·ml),(0.80±0.11) ml/(min·ml) and (0.96±0.33) ml/(min·ml) respectively. Perfusion of RCC was much higher than that of other two renal tumors. Conclusion There is some value of CT perfusion imaging in diagnosis of renal tumors." @default.
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- W2361990668 date "2005-01-01" @default.
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- W2361990668 title "Value of CT perfusion imaging in diagnosis of renal tumors" @default.
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