Value of multi-layer spiral dynamic enhanced CT scan in solitary pulmonary nodule

Objective To explore the value of dynamic enhanced multi-layer CT scan in solitary pulmonary nodule.Methods 60 patients with signle solitary pulmonary nodules were chosen to give dynamic ehchanced multi-layer spiral CT scan.The change of CT value and the pathological results were analyzed.Results The CT values of enhanced scan were obviously higher in the malignant group than the benign group with statistical significance(P 0.05).The change of CT value equal or more than 20HU was considered to have malignant nodules,and the change less than 20HU diagnosed as benign nodules.There was no significant difference of diagnosis resluts between enhanced CT scan and pathological diagnosis on solitary nodule(χ2 = 1.40,P 0.05).Conclusion Mult-layer spiral enhanced CT scan has a high application value in the differential diagnosis of patients with benign or malignant nodules.