ABSTRACT
Objective To evaluate the CT enterography(CTE)of Crohn's disease (CD)in active state and catabatic state by using the Logistic regression analysis.Methods 6 2 patients with CD diagnosed by clinic,imaging,endoscopy,surgery or pathology were analyzed retrospectively.The CTE features of CD in active state and catabatic state were recorded and compared by using single factor and multiple stepwise Logistic regression analysis,and the Logistic regression model was established.Results There were 62 patients with CD, including 40 in active state and 22 in catabatic state.There were significant differences between the bowel wall thickness,the CT value in arterial phase as well as in portal venous phase,the type of enhancement pattern,pseudodiverticulum of free margin,increased mesenteric fat density,comb sign,enlarged abdominal lymph nodes and cellulitis in active state and those in catabatic state of CD by using single factor analysis (P<0.05).The bowel wall thickness (OR=4.589,95%CI:1.689-11.822),bowel wall uniformity enhancement (OR=0.006, 95%CI:0.001-0.067 )and comb sign(OR=23.112,95%CI:1.707-312.997)were significant features by using Logistic regression analysis. Conclusion The bowel wall thickness,bowel wall uniformity enhancement and comb sign are the independent characteristic CTE features to predict the CD in active state or in catabatic state.The Logistic regression model is helpful in demonstrating the state of CD.