Turmezei T D, Cockburn J F
Norwich Radiology Academy, Cotman Centre, Colney Lane, Norwich, UK.
Clin Anat. 2009 Sep;22(6):777-9. doi: 10.1002/ca.20835.
This "problem in diagnostic imaging" provides an overview of the technique of digital subtraction angiography. The possibility of artefacts arising from movement subsequent to the taking of the masking image is discussed. It is also important that contrast medium is allowed to backflow into the parent vessel (in this case the aorta) to ensure that there has been filling of the proximal branches of the vessel of interest (in this case the superior mesenteric artery). An accessory middle colic artery is demonstrated. Detection of such variant vessels is important not only to surgeons but also to specialist radiologists carrying out therapeutic embolization.
这个“诊断成像问题”概述了数字减影血管造影技术。讨论了在采集掩蔽图像后因移动而产生伪影的可能性。同样重要的是，要让造影剂回流到母血管（在这种情况下是主动脉），以确保感兴趣血管（在这种情况下是肠系膜上动脉）的近端分支已充盈。显示了一条副中结肠动脉。检测到这种变异血管不仅对外科医生很重要，对进行治疗性栓塞的放射科专家也很重要。
