Integrated slice-specific dynamic shimming diffusion weighted imaging (DWI) for rectal Cancer detection and characterization

Table 3 Results of Quantitative Assessment of primary rectal cancer

			t test			ROC analysis
	Images		Average	t	P	Area under curve	P
SI_lesion SI_rectum	b800	SI_lesion	221.68 ± 43.51	16.868	< 0.001*	–
	b800	SI_rectum	103.99 ± 42.68	16.868	< 0.001*
	b1600	SI_lesion	143.28 ± 32.9	20.468	< 0.001*
	b1600	SI_rectum	48.94 ± 23.69	20.468	< 0.001*
	b1000	SI_lesion	125.86 ± 32.14	17.441	< 0.001*
	b1000	SI_rectum	65.51 ± 15.57	17.441	< 0.001*
ADC_lesion ADC_rectum	iShim-DWI	ADC_lesion	0.763 ± 0.13	−11.103	< 0.001*
	iShim-DWI	ADC_rectum	1.294 ± 0.36	−11.103	< 0.001*
	SS-EPI-DWI	ADC_lesion	0.768 ± 0.13	−17.303	< 0.001*
	SS-EPI-DWI	ADC_rectum	1.243 ± 0.22	−17.303	< 0.001*
Group Comparison In iShim-DWI	ADC_lesion (×10⁻³ mm²/s)	Group 1	0.912 ± 0.21	2.837	0.017*	0.742	0.012*
	ADC_lesion (×10⁻³ mm²/s)	Group 2	0.732 ± 0.084	2.837	0.017*	0.742	0.012*
	SI_lesion of b800	Group 1	191.91 ± 68.08	−1.697	0.118	0.692	0.046*
	SI_lesion of b800	Group 2	227.64 ± 34.71	−1.697	0.118	0.692	0.046*
	SI_lesion of b1600	Group 1	113.95 ± 47.67	−2.379	0.036*	0.756	0.008*
	SI_lesion of b1600	Group 2	149.15 ± 25.92	−2.379	0.036*	0.756	0.008*
Group Comparison In SS-EPI-DWI	ADC_lesion ((×10⁻³ mm²/s)	Group 1	0.815 ± 0.13	1.029	0.308	0.619	0.382
	ADC_lesion ((×10⁻³ mm²/s)	Group 2	0.764 ± 0.1	1.029	0.308	0.619	0.382
	SI_lesion of b = 1000	Group 1	125.1 ± 29.69	0.663	0.51	0.55	0.714
	SI_lesion of b = 1000	Group 2	134.6 ± 40.71	0.663	0.51	0.55	0.714

ISSN: 1470-7330