中国医疗设备2016，Vol.31Issue(7)：9-11,15,4.DOI:10.3969/j.issn.1674-1633.2016.07.003
双低剂量对比剂和最佳单能谱成像在头颈部CTA中的应用价值
Effectiveness of Application of Double Low-Dose Contrast Agent and Optimal Gemstone Spectral Imaging in Head and Neck CT Angiography
王帅 1石磊 2郑敏文 1李剑 1姜文龙 1刘从伟 1王栋 1石明国1
作者信息
- 1. 第四军医大学西京医院 放射科，陕西西安710032
- 2. 第四军医大学西京医院 骨科，陕西西安710032
- 折叠
摘要
Abstract
Objective To evaluate the feasibility of adopting low-dose contrast agent and optimal gemstone spectral imaging to perform head and neck CTA (Computerized Tomography Angiography). Methods Altogether 60 patients who accepted head and neck CTA were divided into General-Dose Group and Low-Dose Group randomly and evenly with 30 cases in each group. General-Dose Group were given 0.7 mL/kg contrast agent with the lfow rate of 5.0 mL/s;Low-Dose Group were given 0.5 mL/kg contrast agent with the lfow rate of 3.0 mL/s. The remaining scanning parameters of the two groups were similar. The images were reconstructed and the data were sent to the working station for analysis. Then, optimal gemstone spectral images were reconstructed. The CT value and noise of artery on aortic arch, bifurcation of both sides of common carotid arteries and both sides of middle cerebral artery were measured. Then, the statistic differences between the two groups were compared according to the measured values. Results As was shown in 55 keV reconstructed image, there was no significant difference between the CT value and noise of artery on aortic arch, bifurcation of both sides of common carotid arteries and both sides of middle cerebral artery in Low-Dose Group. Conclusion Dual-energy CTA of dual-source CT on head and neck, which adopted 30mL contrast agent to reconstruct optimal gemstone spectral 60±5 keV image, could improve CT value and image noise. It met the standard of imaging diagnosis and clinical requirements. Meanwhile, it reduced about 40%of contrast agent comparing with General-Dose Group, which would reduce the risks of cardiac-cerebral vascular diseases, contrast-induced nephropathy and other side effects caused by contrast agent.关键词
体层摄影术/双源CT/头颈部CTA/单能谱成像/造影剂Key words
computerized tomography/dual-source computerized tomography/head and neck computerized tomography angiography/gemstone spectral imaging/contrast agent分类
医药卫生引用本文复制引用
王帅,石磊,郑敏文,李剑,姜文龙,刘从伟,王栋,石明国..双低剂量对比剂和最佳单能谱成像在头颈部CTA中的应用价值[J].中国医疗设备,2016,31(7):9-11,15,4.
