Application effect of of low-dose contrast agent in diagnosis of head and neck vascular lesions by multi-slice CT angiography
Objective:To observe application effect of low-dose contrast agent in diagnosis of head and neck vascular lesions by multi-slice CT angiography.Methods:The clinical data of 118 patients with head and neck arterial lesions who underwent multi-slice CT angiography in this hospital from June 2021 to June 2023 were retrospectively analyzed.According to different contrast doses,they were divided into observation group(injection of 50 mL Iohexol injection,66 cases)and control group(injection of 70 mL Iohexol injection,52 cases).Both groups were given CT angiography.The CT value of contrast agent in head and neck angiography,the CT value of residual contrast agent in vein in head and neck angiography,the image quality score,and the incidence of adverse reactions of angiography were compared between the two groups.Results:The CT value of aortic arch,common carotid artery,internal carotid artery,middle cerebral artery,vertebral artery and basilar artery in the observation group were lower than those in the control group,and the differences were statistically significant(P<0.05).The CT value of residual contrast agent in internal jugular vein,brachiocephalic vein,superior vena cava and subclavian vein in the observation group were lower than those in the control group,and the differences were statistically significant(P<0.05).There was no significant difference in the image quality score between the two groups(P>0.05).The incidence of adverse reactions in the observation group was 4.55%(3/66),which was lower than 21.15%(11/52)in the control group,and the difference was statistically significant(P<0.05).Conclusions:The is no significant difference in image quality of low-dose contrast agent in the diagnosis of head and neck vascular lesions by multi-slice CT head and neck angiography is consistent with that of conventional dose contrast agent examination,and can reduce the residual contrast agent and reduce the incidence of adverse reactions.
Low doseContrast agentMulti-slice CTHead and neck angiographyExaminationHead and neck vascular lesionDiagnosis
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