Schoonenberg Gert, Lelong Pierre, Florent Raoul, Wink Onno, ter Haar Romeny Bart
Philips Healthcare, X-Ray Predevelopment, Best, The Netherlands.
Med Image Comput Comput Assist Interv. 2008;11(Pt 2):87-94. doi: 10.1007/978-3-540-85990-1_11.
New drug eluting stents are less radiopaque than bare metal stents and therefore difficult to see with conventional X-ray coronary angiography. 2D StentBoost and intravascular ultrasound (IVUS) are routinely used to evaluate stent deployment and vessel apposition during a percutaneous coronary intervention. IVUS images give cross-sectional information about the stent lumen and surrounding tissue. 2D StentBoost is a boosted angiogram sequence and visualizes the geometry of the deployed stent from a fixed viewing direction. Three-dimensional motion compensated volumetric stent reconstruction has been developed to give insight into the 3D geometry of the stent. Markers on the balloon wire are used to motion compensate cardiac rotational angiography acquisitions. In this paper we present the effect of automated marker detection on in vivo volumetric cardiac stent reconstructions. Automated or semi-automated marker detection reduces user interaction, potentially reduces total processing time, and increases detection results which leads to higher quality of stent reconstructions.
新型药物洗脱支架的射线不透性低于裸金属支架,因此在传统的X射线冠状动脉造影中很难看清。二维支架增强成像(2D StentBoost)和血管内超声(IVUS)在经皮冠状动脉介入治疗期间常规用于评估支架的植入情况和血管贴壁情况。IVUS图像可提供有关支架管腔和周围组织的横截面信息。2D StentBoost是一种增强血管造影序列,可从固定的观察方向可视化已植入支架的几何形状。已开发出三维运动补偿容积支架重建技术,以深入了解支架的三维几何形状。球囊导丝上的标记物用于对心脏旋转血管造影采集进行运动补偿。在本文中,我们展示了自动标记物检测对体内容积心脏支架重建的影响。自动或半自动标记物检测减少了用户交互,可能缩短了总处理时间,并提高了检测结果,从而提高了支架重建的质量。