Time—density curves (TDCs) of renal cortex from the single input maximum slope.

<p>(A) The ROIs were placed in the abdominal aorta and renal cortex. (B) TDC indicates the enhancement characteristics of the aorta and renal cortex during the first pass. Blood flow (BF) can be determined from the maximum gradient of renal cortical TDC by the peak enhancement of the aorta.