Table 1.

Overview of perfusion parameters and quality of fit parameters (stated in mean ± standard deviation) for the two compartment exchange and uptake model compared to the results of the fast deconvolution approach.

Perfusion Parameter - Mean values of tumor tissue and (healthy tissue)	2CX	2CU	FD
PF [ml/100 ml/min]	68 ± 44	55 ± 36	36 ± 19
	(37 ± 19)	(34 ± 16)	(27 ± 11)
PV [ml/100 ml]	18 ± 11	22 ± 12	31 ± 15
	(11 ± 4)	(11 ± 5)	(19 ± 7)
MTT [s]	16 ± 9	25 ± 13	58 ± 16
	(16 ± 5)	(20 ± 6)	(46 ± 16)
AIC	169 ± 81	179 ± 77	—
${\mathbf{\chi }}^2$	10 ± 12	9 ± 10	—
T2 (3 patients)
PF [ml/100 ml/min]	41 ± 16	33 ± 5	34 ± 12
PV [ml/100 ml]	25 ± 9	31 ± 7	33 ± 6
MTT [s]	25 ± 13	38 ± 11	67 ± 18
T3 (13 patients)
PF [ml/100 ml/min]	76 ± 47	61 ± 38	37 ± 21
PV [ml/100 ml]	16 ± 11	20 ± 12	31 ± 17
MTT [s]	13 ± 6	22 ± 11	55 ± 15
T4 (1 patient)
PF [ml/100 ml/min]	34	33	27
PV [ml/100 ml]	17	17	26
MTT [s]	27	29	59

Values for healthy rectum wall are given in brackets and separate values for the different cancer stages are listed. Quality of fit parameters is not depicted for the deconvolution approach as values are calculated directly with this approach and no fit is required.