Magnetic resonance imaging and Crohn’s disease endoscopic index of severity: Correlations and concordance

Table 5 Correlations between magnetic resonance indicators and Crohn’s disease endoscopic index of severity in the active group according to disease activity after treatment

	Remained active n = 17		Improved to inactive n = 44
	r	P value	r	P value
ADC	-0.219	0.518	-0.516	0.002
Thickness	0.105	0.758	0.170	0.568
tRCE	0.356	0.203	0.420	0.005
aRCE	0.376	0.255	0.697	0.002
pRCE	0.305	0.113	0.350	0.010
dRCE	0.381	0.134	0.341	0.015
MaRIA
tRCE	0.268	0.400	0.705	< 0.001
aRCE	0.268	0.399	0.712	< 0.001
pRCE	0.306	0.334	0.685	< 0.001
dRCE	0.309	0.329	0.634	< 0.001

ADC: Apparent diffusion coefficient; tRCE: Total relative contrast enhancement; aRCE: Arterial relative contrast enhancement; pRCE: Portal phase relative contrast enhancement; dRCE: Delay phase relative contrast enhancement; MaRIA: Magnetic resonance index of activity.