Table 2.

A comparison of in vivo $A_1$ estimates using different sets of time gates. Using 10 time gates to fit the data results in similar estimates with similar standard deviations to the case of using all time gates. Using four time gates results in larger standard deviations and less accurate estimations, especially in the tumor.

Number of time gates	All	10	4
Bladder	$0.22\pm 0.07$	$0.23\pm 0.07$	$0.23\pm 0.08$
Tumor	$0.32\pm 0.04$	$0.33\pm 0.04$	$0.35\pm 0.07$