影响团注跟踪法下肢动脉DSA影像质量的因素  

The Influencing Factors of DSA Images Quality in Bolus Chasing Technology for Angiography of Lower Extremity Artery

作　　者：叶斌[1] 徐顺华[1] 崔凤[1] 

机构地区：[1]杭州市中医院,浙江省杭州市310007

出　　处：《中国动脉硬化杂志》2011年第1期69-71,共3页Chinese Journal of Arteriosclerosis

摘　　要：目的分析影响团注跟踪法下肢动脉造影术影像质量的因素,探讨下肢动脉造影质量控制措施。方法选取采用团注跟踪法造影技术的下肢血管造影患者67例、影像序列154个,分析引起造影失败或影像不合格的原因。结果下肢动脉造影失败影像主要表现为移动伪影、饱和伪影和血管显示不佳三个方面,154个序列中存在不同程度移动伪影的序列有17个(造影序列6个,蒙片序列11个),过度曝光导致饱和状伪影的序列有17个(造影序列9个,蒙片序列8个),81个造影序列中血管内造影剂显示不佳导致无法诊断的序列有10个。结论有效固定患肢防止移动伪影,合理放置橡皮楔减少饱和状伪影,合适的注射速度和剂量,熟练操作,医技护患相互密切配合是造影成功的关键。Aim To analyse the influencing factors of images quality with bolus chasing technology for angiography of lower extremity artery with digital subtraction angiography（DSA）,and to discuss how to take some methods for controlling the quality of bolus chasing angiography of lower extremity artery. Methods With 154 exposure sequences from 67 cases lower extremity artery angiography with DSA by using bolus chasing technology,the influencing factors of the failed or bad images were analysed. Results The influencing factors of the failed or bad images included motion artifact,saturation artifact and the poor vessels showings,of all the 154 exposure sequences,the motion artifacts were 17 exposure sequences（6 angiogram sequences,11 mask image sequences）,the saturation artifact were 17 exposure sequences（9 angiogram sequence,8 mask image sequences）and the poor vessel showings were 10 of all the 81 angiogram sequences. Conclusions The present analysis demonstrates the important keys of getting best images with bolus chasing technology for angiography of lower extremity artery by DSA as follows： effective fixing the patient＇s lower extremity in ordor to prevent motion artifact,placing rubber cuneus to prevent saturation artifact,suitable speeding and doses of contrast,expertly operating machine and medical staff and patients closely matching with each other.

关 键 词：团注跟踪法 数字减影血管造影术 下肢动脉 

分 类 号：R81[医药卫生—放射医学]