Effectiveness of magnetic resonance imaging and spiral computed tomography in the staging and treatment prognosis of colorectal cancer

Table 4 Predictive value of magnetic resonance imaging and spiral computed tomography

Index	AUC	95%CI	Sensitivity	Specificity	P value
BV	0.750	0.612-0.889	0.714	0.778	0.003
BF	0.683	0.559-0.806	0.857	0.593	0.030
TTP	0.772	0.633-0.910	0.643	0.802	0.001
PS	0.761	0.615-0.906	0.643	0.840	0.002
Kep	0.709	0.538-0.880	0.786	0.691	0.013
Ktrans	0.719	0.536-0.902	0.714	0.753	0.009
Ve	0.910	0.825-0.995	0.786	0.914	< 0.001

AUC: Area under the curve; BV: Blood volume; BF: Blood flow; CI: Confidence interval; K_ep: Blood reflux constant; K^trans: Volume transfer constant; PS: Permeability surface; TTP: Time to peak; V_e: Extracellular extravascular space volume fraction.