Table 2.

Stability Against Variation in the t _stretch Interval for the Patlak (a) and the Hybrid (b) Methods

	Yellow		Red
	K trans	v p	K trans	v p
Patlak
85‐250s	0.0065	0.027	0.0025	0.020
85‐300s	0.0050	0.031	0.0009	0.024
0‐250s	0.0043	0.033	0.0028	0.019
0‐460s	0.0045	0.032	0.0013	0.022
Mean	0.0051	0.031	0.0019	0.021
CoV	19.6%	8.6%	49.0%	10.4%
Hybrid
85‐250s	0.0076	0.023	0.0031	0.019
85‐300s	0.0069	0.024	0.0024	0.019
0‐250s	0.0075	0.024	0.0032	0.019
0‐460s	0.0063	0.024	0.002	0.019
mean	0.0071	0.024	0.0027	0.019
CoV	8.5%	2.1%	21.4%	0.0%