Imaging features and correlation with short-term prognosis in laparoscopic radical resection of colorectal cancer

Table 1 Variable assignment table

Index	Assignment method
LTL	Actual value entry
ATL	Actual value entry
ADC	Actual value entry
Ktrans	Actual value entry
Ve	Actual value entry
Vp	Actual value entry

LTL: Longitudinal tumor length; ATL: Axial tumor length; ADC: Apparent diffusion coefficient; K^trans: Volume transfer constant; V_e: Volume of the extravascular extracellular space; V_p: Plasma volume fraction.

Table 2 Logistic regression analysis

Index	β	SE	Wald	P value	OR	95%CI
LTL	-0.190	0.067	8.093	0.004	0.827	0.726-0.943
ATL	1.397	0.372	14.065	< 0.001	4.042	1.948-8.386
ADC	-7.359	1.737	17.959	< 0.001	0.001	0.000-0.019
Ktrans	0.185	0.063	8.598	0.003	1.203	1.063-1.361
Ve	-0.043	0.047	0.840	0.359	0.958	0.873-1.051
Vp	-.260	0.116	5.050	0.025	0.771	0.614-0.967

LTL: Longitudinal tumor length; ATL: Axial tumor length; ADC: Apparent diffusion coefficient; K^trans: Volume transfer constant; V_e: Volume of the extravascular extracellular space; V_p: Plasma volume fraction; SE: Standard error; OR: Odds ratio.

Table 3 Receiver operating characteristic curve analysis table of imaging features predicting short-term prognosis of laparoscopic radical resection

Index	AUC	Cutoff	SE	Sensitivity	Specificity	P value	95%CI
LTL	0.648	43.120	0.057	0.643	0.702	0.017	0.538-0.759
ATL	0.927	13.580	0.027	0.893	0.904	< 0.001	0.875-0.979
ADC	0.821	0.370	0.048	0.607	0.883	< 0.001	0.727-0.915
Ktrans	0.809	32.090	0.061	0.714	0.968	< 0.001	0.689-0.928
Vp	0.831	19.950	0.056	0.714	0.894	< 0.001	0.721-0.940

LTL: Longitudinal tumor length; ATL: Axial tumor length; ADC: Apparent diffusion coefficient; K^trans: Volume transfer constant; V_p: Plasma volume fraction; AUC: Area under the curve.