Table 2.

Dynamic physiological parameters extracted from the planar and SPECT acquisitions

Left kidney	2D dynamic	3D NAC 360 × 5s	3D NAC 180 × 10s	3D NAC 120 × 15s	3D NAC 60 × 30s	3D NAC 30 × 60s
Time to peak (min)	2.6	2.2	2.1	2.1	2.2	2.2
Clearance halftime (min)	16.2	6.0	6.4	6.5	6.6	6.8
Right kidney	2D dynamic	3D NAC 360 × 5s	3D NAC 180 × 10s	3D NAC 120 × 15s	3D NAC 60 × 30s	3D NAC 30 × 60s
Time to peak (min)	3.0	2.7	2.7	2.7	2.7	2.7
Clearance halftime (min)	17.1	5.6	5.9	6.0	6.2	6.2

Time to peak and clearance halftime extracted from the fitted curves of the different TACs corresponding to the NAC images of the 360 × 5s, 180 × 10s, 120 × 15s, 60 × 30s and 30 × 60s reframings of the SPECT acquisition