能谱CTA在颅内动脉瘤弹簧圈栓塞术后应用初探  

Application of Energy Spectral CT Angiography After Intracranial Aneurysm Coil Embolization

作　　者：柯锐钿[1] 樊妮娜 郑邦豪[1] 杨曼[1] 龙荣[1] 林顺发[1] KE Ruitian;FAN Nina;ZHENG Banghao(Department of Radiology,The 1 st Affiliated Hospital,Shantou University Medical College,Shantou,Guangdong Province 515041,P.R.China)

机构地区：[1]汕头大学医学院第一附属医院放射科,515041 [2]广东省梅州市人民医院放射科,514031

出　　处：《临床放射学杂志》2018年第7期1221-1224,共4页Journal of Clinical Radiology

基　　金：2014年度汕头市医疗科技计划资助项目[汕府科(2014)62号]

摘　　要：目的探讨能谱CTA应用于颅内动脉瘤弹簧圈栓塞术后检查的可行性。方法搜集15例颅内动脉瘤弹簧圈栓塞术后患者行能谱CTA成像,获取混合能量和22个能谱（Mono、Mono＋MARs重建模式）序列图像。评价图像质量,包括图像客观评价（伪影SD值、AI值）以及图像质量主观评分。结果混合能量序列及Mono组、Mono＋MARs组序列客观、主观数据总体组间差异有统计学意义（P〈0.05）;与混合能量组对比,Mono＋MARs组50~90 ke V的SD值、AI值及主观评分差异均有统计学意义（P〈0.05）;相同能级的Mono＋MARs序列图像SD值、AI值和图像评分主观评分均低于Mono序列（P〈0.05）;Mono＋MARs 70 keV序列显示混合能量序列中因伪影掩盖而无法显示的血管16段。结论能谱CTA成像能有效消减弹簧圈伪影,显示伪影掩盖下的血管,有助于对颅内动脉瘤弹簧圈栓塞术后的评估和跟踪观察。Objective To assess the feasibility of energy spectral CT angiography（ CTA） application after intracranial aneurysm coil embolization. Methods 15 patients after intracranial aneurysm coil embolization underwent the energy spectral CTA scanning. Multichromatic array and 22 energy spectral [monochromic（ Mono） and Mono ＋ metal artifact reducing system（ MARs） ] arrays were obtained to access the image quality,which included objective evaluation（ SD mean and AI mean of the image artifact） and subjective scoring. Results For each means of SD,AI and subjective scoring,there were significant differences between multichromatic array and Mono arrays,as the same as Mono ＋ MARs arrays. There were significant differences between Mono ＋ MARs 50 ~ 90 keV arrays and multichromatic array for SD,AI and subjective scoring. SD,AI and subjective scoring were all statistically different between each keV array of Mono and Mono ＋ MARs. 16 segment vessels which could not be displayed in multichromatic array were visible in the Mono ＋ MARs 70 keV array.Conclusion The energy spectral CTA shows favorable artifact reduction,resulting in visibility of the surrounding vessels.It is beneficial for assessment and follow-up of patient after intracranial aneurysm coil embolization.

关 键 词：能谱CT 颅内动脉瘤 弹簧圈栓塞 伪影 

分 类 号：R651.1[医药卫生—外科学] R816.1[医药卫生—临床医学]