Table 1.

Comparison of apparent diffusion coefficient (ADC) values.

b-value seta	Mean error relative to ADCIVIMb (%)	p-valuec	Intra-scan CVd (%)
0–1000	18.6	<0.001	18.6
50–1000	13.0	<0.001	19.1
100–1000	9.4	<0.001	19.8
250–1000	2.2	0.564	22.4e
500–1000	−7.8	<0.001	29.4
250, 500 and 1000	−0.13	0.402	23.1e
250, 650 and 1000	1.6	0.805	22.6e
250, 800 and 1000	3.5	0.113	21.9e
250 and 800	12.5	<0.001	24.9e
250 and 1000	1.3	0.994	22.7e
0–1000 (IVIM)	-	-	24.1

^aThe b-value (in µs/µm²) sets were used for the monoexponential model except the last row which used IVIM model;

^bADC_IVIM represents the IVIM model ADC;

^cTwo-tailed paired t-test with ADC_IVIM mean values of the active tumour volumes of the scans;

^dCV, coefficient of variation;

^eNot significantly different intra-scan CV of ADC values of the active tumour volumes compared to that of IVIM (two-tailed paired t-test).