影响脑血管三维重建图象质量因素的分析  

Analysis of factors influencing image quality in three-dimensional reconstruction of cerebral artery

作　　者：黄永[1] 柴丽敏[1] 张伟[1] 王伟[1] 

机构地区：[1]山东单县中心医院放射科,山东274300

出　　处：《当代医学》2009年第17期374-375,共2页Contemporary Medicine

摘　　要：目的分析影响三维重建图像质量的主要因素。方法43例脑血管造影三维重建技术应用过程中,根据其出现的影象质量问题,逐一判断产生影响质量的原因,并对每种原因进行分析,提出解决办法。结果43例三维重建,37例图象显示清晰、5例图象模糊、1例重建失败。其中有2例属造影剂使用不当,1例为曝光延时过短,3例产生运动伪影。结论三维重建图像质量的优劣有多种因素决定,如造影剂因素、曝光延迟时间等,只有合理应用这些因素,才能显示出清晰的三维重建图象。Objective To analyse the factors influencing image quality in three-dimensional reconstruction of cerebral artery. Methods 43 cases of cerebral angiography with three-dimensional reconsruction technology were done, and the factors influencing image quality were analyzed. Results There were 37 cases with good-quality images, 5 cases with blurred images, one case failed in reconstruction. The reasons for 6 failed cases were misuse contrast agent in 2 cases, short delay exposure in one ease and motion artifact in three cases. Conclusion The image quality of three-dimensional reconsruction may be influenced by many factors, such as the contrast agent, delay time of exposure and so on.

关 键 词：旋转数字减影血管造影 三维重建 图象质量 

分 类 号：R743.3[医药卫生—神经病学与精神病学] R816.1[医药卫生—临床医学]