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首页> 外文期刊>Physics in medicine and biology. >Helical cardiac cone beam reconstruction using retrospective ECG gating
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Helical cardiac cone beam reconstruction using retrospective ECG gating

机译：使用回顾性心电门控重建螺旋形心脏锥形束

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摘要

In modern computer tomography (CT) systems, the fast rotating gantry and the increased detector width enable 3D imaging of the heart. Cardiac volume CT has a high potential for non-invasive coronary angiography with high spatial resolution and short scan time. Due to the increased detector width, true cone beam reconstruction methods are needed instead of adapted 2D reconstruction schemes. In this paper, the extended cardiac reconstruction method is introduced. It integrates the idea of retrospectively gated cardiac reconstruction for helical data acquisition into a cone beam reconstruction framework. It leads to an efficient and flexible algorithmic scheme for the reconstruction of single-and multi-phase cardiac volume datasets. The method automatically adapts the number of cardiac cycles used for the reconstruction. The cone beam geometry is fully taken into account during the reconstruction process. Within this paper, results are presented on patient datasets which have been acquired using a 16-slice cone beam CT system.
机译：在现代计算机断层扫描（CT）系统中，快速旋转的机架和增加的检测器宽度可实现心脏的3D成像。心脏容积CT具有较高的空间分辨率和较短的扫描时间，在非侵入性冠状动脉造影方面具有很高的潜力。由于增加了检测器宽度，因此需要真正的锥束重建方法来代替自适应的2D重建方案。本文介绍了扩展心脏重建方法。它把用于螺旋数据采集的回顾性门控心脏重建的思想整合到了锥形束重建框架中。这导致了用于重构单相和多相心脏容积数据集的高效灵活的算法方案。该方法自动适应用于重建的心动周期数。在重建过程中会充分考虑锥束的几何形状。在本文中，结果显示在使用16层锥束CT系统获取的患者数据集上。

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