摘要
目的 探讨多层螺旋CT仿真血管镜的成像方法及临床应用价值。方法 回顾性分析 80例已行多层螺旋CT检查的病例 ,其中 6 0例为增强扫描 ,2 0例为平扫 ,将患者的原始扫描数据进行低对比强化 (ker nel≤ 30f)及薄层 (层厚及层间距均≤ 3.0mm)图像重建 ,然后把重建图像导入CT 3D工作站 ,利用机器所带软件Fly -Through通过调整阈值做仿真内镜观察并做出分析评价。 结果 6 0例增强扫描的患者均能获得大血管的类似内窥镜图 ,4 2例能显示到 2级分支血管腔镜图 ,8例获得 3级分支其以下血管腔镜图。发现动脉钙化及斑块 12例 ,动脉瘤 2例 ,血管畸形 3例 ,血管狭窄 4例 ;在图像质量和解剖细节方面 ,CT仿真血管镜能较横断图像获得更多的信息。结论 多层螺旋CT血管仿真内窥镜可比较直观地观察血管腔内的情况 ,显示管壁的钙化及揭示管腔狭窄的原因 ,其最大的优势是快速和无创伤性。
Objective: To study the practical imaging methods and evaluate clinical application of multi-slice helical CT of virtual intravascular endoscopy(MSCTVIE) .Methods:Eighty patients were performed in multi-slice helical CT volume scanning, including 60 patients were contrast enhanced and 20 patients were no contrast, processing the raw data with lowly kernel (kernel ≤ 30 f) and thin slice (slice≤ 3mm) reconstruction, then transmitted to CT 3D workstation, adjusting threshold values to process CTVIE in Fly-through imaging, and then analysed and evaluated them. Results: CTVIE imaging were successful completed in 60 patients of contrast enhancing. CTVIE images of 42 patients can display the inner lumen of second offset vessels, 8 patients can display after third offset vessels. Among them can show atherosclerosis(n=12), aneurysm(n=2), arteriovenous(n=3) and aortic stenosis(n=4). Comparing with axial images, CTVIE can show more information for imaging quality and specific anatomy.Conclusions: Multi-slice CTVIE images can display the inner lumen of vessels directly, and show calcification of vessels and reason of stenosis. The best advantage is more quickly and nonevasively.
出处
《中国内镜杂志》
CSCD
2003年第12期38-40,共3页
China Journal of Endoscopy
关键词
多层螺旋CT
血管
内镜技术
multi-slice helical CT
intravascular
endoscopy
