中国医学创新2026，Vol.23Issue(15)：148-152,5.DOI:10.3969/j.issn.1674-4985.2026.15.032
低剂量对比剂联合宝石能谱CT在头颈部CTA检查中的应用价值及对碘负荷与辐射剂量的影响
Application Value of Low-dose Contrast Medium Combined with Gemstone Spectral CT in Head and Neck CTA Examination and Its Impact on Iodine Load and Radiation Dose
摘要
Abstract
Objective:To investigate the application value of low-dose contrast medium combined with gemstone spectral CT in head and neck CT angiography(CTA)and its impact on iodine load and radiation dose.Method:Prospectively to selection was made of 90 patients diagnosed with high-risk head and neck arterial diseases who were treated at the First People's Hospital of Fuzhou City from January 2024 to June 2025.These patients were divided into two groups based on random number table method,with 45 cases in each group.Both groups completed head and neck CTA examination.Group A received a conventional dose contrast medium with 120 kVp polychromatic CT examination,while group B received low-dose contrast medium with 60 keV gemstone spectral CT examination.The two groups were compared in terms of iodine load,radiation dose,and image quality.Result:There were no statistically significant differences in the CT values,contrast-to-noise ratio(CNR),and signal-to-noise ratio(SNR)of aortic arch,common carotid artery,C1 segment of internal carotid artery and M1 segment of middle cerebral artery between the two groups(P>0.05).The comparison of subjective image quality scores of aortic arch,common carotid artery,internal carotid artery and middle cerebral artery in the two groups showed no statistically significant difference(P>0.05).The dose-length product(DLP),effective dose(ED)in group B were lower than those in group A,contrast medium dosage and iodine dosage were less than those in group A(P<0.05).Conclusion:Low-dose contrast medium combined with gemstone spectral CT is effective for head and neck CTA examination.It can meet the requirements of image diagnosis while reducing iodine load and radiation dose.关键词
宝石能谱CT/头颈部CT血管造影/碘负荷/辐射剂量Key words
Gemstone spectral CT/Head and neck CT angiography/Iodine load/Radiation dose分类
医药卫生引用本文复制引用
饶驭,章永明,谢培,杨扬,丁爱民,胡凌,付华..低剂量对比剂联合宝石能谱CT在头颈部CTA检查中的应用价值及对碘负荷与辐射剂量的影响[J].中国医学创新,2026,23(15):148-152,5.基金项目
江西省抚州市指导性科技计划项目[抚科计字[2024]6号第16项] （）
