Clinical value of dual-energy CT in differential diagnosis of cholesterol polyps and adenomatous gallbladder polyps
Objective:To explore the clinical value of dual-energy CT in the differential diagnosis of cholesterol polyps and adenomatous gallbladder polyps.Methods:162 patients with suspected gallbladder polyps in our hospital from July 2021 to July 2022 were selected as the study objects.Preoperative dual-energy CT and 64-slice spiral CT were used as the gold standard.The diagnostic efficiency of the two kinds of CT was compared,and the imaging features of gallbladder polyps were analyzed.Results:118 cases were positive and 44 cases were negative.Dual-energy CT detected 115 true positive and 33 true negative polyps.Sensitivity was 97.46%,specificity was 75.00%,accuracy was 91.36%,Kappa value was 0.768.There were 102 true positive cases and 31 true negative cases detected by 64-slice spiral CT,with sensitivity 86.44%,specificity 70.45%,accuracy 82.10%and Kappa value 0.557.There were statistical significance in size,basal area and vascular signs of the two types of polyps(P<0.05).Cholesterol polyps were mostly less than 1cm,narrow base,and increased and thickened blood vessels around lesion/gallbladder.Most adenomatous gallbladder polyps were 2 cm or more,with a wide base and vascular enhancement in the lesion.Conclusion:Dual-energy CT is better than 64-slice spiral CT and ultrasound in the diagnosis of gallbladder polyps.The combination of 5-mm multi-plane reconstruction and vascular signs can promote the diagnosis of gallbladder polyps by CT,and can effectively differentiate the diagnosis of cholesterol polyps from adenomatous gallbladder polyps by the aspects of polyp size,base range and vascular signs.
dual-energy CTIdentifyCholesterol polypAdenomatous gallbladder polypImaging features
NETL
NSTL
万方数据
维普
