Statistical analysis performed using pearson correlation coefficient on the left (x- and y-axis show GFR in ml/min) and a Bland-Altman analysis on the right (x-axis shows GFR in ml/min, y-axis shows the difference between GFR values obtained using CTA and reference standard in %).

<p>Good correlation with a correlation coefficient of r = 0.84 (p = 0.0002). The Bland-Altman graph shows good agreement between GFR derived from dynamic CTA and GFR derived by reference method with a systematic error of only 3%.</p

Anomalies of renal vessels; double renal arteries (arrows) in VRT.

<p>Anomalies of renal vessels; double renal arteries (arrows) in VRT.</p

Semi-automatic segmentation of the left kidney and selection of a ROI in the aorta for the time attenuation curves (TACs) of the renal parenchyma and the arterial input.

<p>Semi-automatic segmentation of the left kidney and selection of a ROI in the aorta for the time attenuation curves (TACs) of the renal parenchyma and the arterial input.</p

Demarcation of the operating renal cortex in a coronal reformation of the Ktrans maps (A).

<p>Cortex volume, calculated with a volume-program by setting upper and lower limits (upper limit 300 mL/100 mL/min, lower limit 80 mL/100 mL/min, volume 59 mL, mean Ktrans 98±10 (B). r2 map shows linearity of the Patlak fit in % (C).</p

Time attenuation curves of the arterial input (red line) and of the renal parenchyma (white dashed line); note the different scale of the y-axis on the left (arterial input) and the right (renal parenchyma).

<p>Time attenuation curves of the arterial input (red line) and of the renal parenchyma (white dashed line); note the different scale of the y-axis on the left (arterial input) and the right (renal parenchyma).</p

Arterial and venous scan after injection of 30(A, B) and volume rendering technique (C, D) with good identifiability of the abdominal aorta and renal anatomy.

<p>Note the ovarian vein (arrow in D).</p