Non-invasive MR assessment of the microstructure and microcirculation in regional lymph nodes for rectal cancer: a study of intravoxel incoherent motion imaging

Table 4 Quantitative parameters derived from IVIM-MRI versus histologic findings in 168 lymph nodes with a short-axis diameter equal to or greater than 5 mm

Parameter	Non-metastatic LNs	Metastatic LNs	P
Parameter	(n = 90)	(n = 78)	P
S (mm)	6.085 (1.710)	6.650 (2.890)	< 0.001
L (mm)	6.835 (2.170)	7.850 (2.650)	< 0.001
S/L	0.864 (0.130)	0.865 (0.090)	0.582
D(10⁻³·mm²/s)	0.583 (0.183)	0.723 (0.213)	< 0.001
D^*(10⁻³·mm²/s)	8.684 ± 4.245	7.798 ± 3.211	0.126
f	0.207 (0.133)	0.163 (0.079)	< 0.001

Note: Value with number in parentheses is median with interquartile range, value ± number is mean ± SD; S short-axis diameter, L long-axis diameter, S/L short- to long-axis diameter ratio, D pure diffusion coefficient, D^* pseudo-diffusion coefficient, f perfusion factor

ISSN: 1470-7330