Application of energy spectrum CT multi-parameter imaging in the diagnosis of accidental adrenal tumors

ZHANG Danhui; ZHANG Yabin; SHI Zhan

doi:10.20258/j.cnki.1006-9011.2025.02.018

Abstract：Objective To investigate the application of spectral CT multi-parameter imaging in the diagnosis of accidental ad-renal tumor.Methods 52 patients with AAT confirmed by pathological examination in our hospital were selected and analyzed,including 38 cases of adrenal cortical adenoma(ACA group)and 14 cases of adrenal ganglioneuroma(AGN group).We ob-served the morphological manifestations of adrenal incidentaloma,explored the conventional CT signs of ACT and AGN,the single energy CT value,the effective atomic number in arterial phase,and the concentration of each paired base material.The re-ceiver operating characteristic(ROC)curve was used to analyze the diagnostic efficacy of spectral CT indicators in AAT.Re-sults ACA was mostly round and quasi round,and low-density on plain CT scan,AGN was mostly oval and water drop shaped,and CT scan showed isodensity.The average maximum diameter of ACA was higher than that of AGN.The plain CT value of ACA was lower than that of AGN,and the CT value of ACA in arterial phase and portal venous phase was higher than that of AGN.The single energy CT values of ACA at arterial phase of 40-80kev were higher than those of AGN.There were significant differences between adrenal cortical adenoma and adrenal ganglioneuroma in single energy CT value,effective atomic number in arterial phase,and concentration of paired base substance(P<0.05).Conclusion The quantitative analysis of 40keV single energy CT value,effective atomic sequence,iodine water concentration,lipid iodine concentration in arterial phase of spectral CT mul-tiparameter imaging has high differential diagnostic value for AAT and can accurately evaluate ACA and AGN,which has high application value in clinic.