基于能谱CTA的下肢动脉闭塞性疾病支架效果显示评价  

Evaluation of stent effect display in lower extremity arterialocclusive disease based on energy spectrum CTA

作　　者：黄欣[1] 丁宁宁 周丽 赵文哲 李达亮 刘哲[1] 杨健[1] 金超[1] HUANG Xin;DING Ningning;ZHOU Li;ZHAO Wenzhe;LI Daliang;LIU Zhe;YANG Jian;JIN Chao(Department of Radiology;Department of Cardiology,The First Affiliated Hospital of Xi’an Jiaotong University,Xi’an 710061,China)

机构地区：[1]西安交通大学第一附属医院医学影像科,陕西西安710061 [2]西安交通大学第一附属医院心血管内科,陕西西安710061

出　　处：《西安交通大学学报(医学版)》2025年第1期178-183,共6页Journal of Xi’an Jiaotong University(Medical Sciences)

基　　金：国家自然科学基金资助项目(No.12226007)。

摘　　要：目的 探讨能谱CT单能量成像技术在提高下肢动脉硬化闭塞性疾病支架置入CT血管成像(CTA)图像质量及支架显示中的临床价值。方法 回顾性分析我院接受下肢动脉能谱CTA检查的20例下肢动脉慢性闭塞性疾病支架植入患者的图像资料[年龄(65.61±9.65)岁;男/女:16/4]。原始图像重建为7组单能量图像(40~100 keV)、120 kVp、虚拟平扫(VUE)和去金属伪影(MAR)技术图像。图像经去骨处理后,以容积重建(VR)、最大密度投影(MIP)和曲面重建(CPR)显示支架,并进行客观和主观评估,通过单因素方差分析进行比较。结果 与其他重建组图像相比,80 keV和MAR图像评分最高(P<0.01)。结论 80 keV单能量成像技术和MAR提高了下肢动脉支架内腔和结构的图像质量,为临床医师提供了更高的诊断价值。Objective To explore the clinical value of energy-spectrum CT single-energy imaging in enhancing the image quality and stent display of stent placement CT angiography(CTA)in lower extremity atherosclerotic occlusive disease.Methods Twenty patients[mean(65.61±9.65)years;male/female,16/4]who underwent stenting for chronic occlusive disease of the lower extremity arteries by lower extremity arterial energetic spectral CTA were retrospectively recruited at our hospital.The original images were reconstructed into seven sets of single energy(40-100 keV),120 kVp,virtual unenhanced images(VUE)and metal artifact reduction(MAR)technique images.Images were debossed and then scaffolded for display with volumetric reconstruction(VR),maximum density projection(MIP)and curve planar reconstruction(CPR),and were objectively and subjectively assessed and compared using one-way analysis of variance(ANOVA).Results The 80 keV and MAR images had the highest scores compared to the other reconstruction group images(P<0.01).Conclusion 80 keV single-energy imaging and de-metallization artifacts MAR improve the image quality of lower extremity arterial stent lumen and structure display;therefore,they have higher diagnostic value for clinicians.

关 键 词：下肢动脉慢性闭塞性疾病 能谱CT血管成像 单能量成像 下肢动脉 动脉支架 

分 类 号：R816.2[医药卫生—放射医学] R543.5[医药卫生—临床医学]