首页> 外文会议>ASME summer bioengineering conference;SBC2009 >EFFICIENT SYNCHRONIZATION AND RECONSTRUCTION OF 4D NON-GATED CARDIAC IMAGES OF CHICK EMBRYOS OBTAINED FROM OPTICAL COHERENCE TOMOGRAPHY
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EFFICIENT SYNCHRONIZATION AND RECONSTRUCTION OF 4D NON-GATED CARDIAC IMAGES OF CHICK EMBRYOS OBTAINED FROM OPTICAL COHERENCE TOMOGRAPHY

机译:光学相干断层扫描术获得的小鸡胚的4D非门控心脏图像的高效同步和重建

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Four-dimensional (4D) imaging with optical coherence tomography (OCT) - a high-resolution, noninvasive tomographic imaging technique - applied to cardiac development can be used to study the interaction of cardiac morphology and function in vivo. However, to image the fast beating embryonic heart, the biggest challenge confronted by current OCT systems is the slow rate of 3D volume image data acquisition.In this study, rather than using direct 4D imaging, we used a non-gated 4D imaging strategy that acquires sequences of 2D images over time at sequential positions along the longitudinal axis of the heart [1]. Taking advantage of the periodicity of the cardiac motion, we then developed an efficient post-acquisition synchronization procedure to reconstruct the 4D images from the sequences of 2D images retrospectively. Our synchronization procedure assumes similarity of adjacent cardiac structures to register the phases of image sequences acquired at different locations of the heart.
机译:光学相干断层扫描(OCT)的四维(4D)成像技术是一种应用于心脏发育的高分辨率无创断层成像技术,可用于研究体内心脏形态与功能的相互作用。但是,要对快速跳动的胚胎心脏成像,当前的OCT系统面临的最大挑战是3D体积图像数据采集的速度较慢。 在这项研究中,我们没有使用直接4D成像,而是使用了非门控4D成像策略,该策略在沿心脏纵轴的连续位置上随时间获取2D图像序列[1]。利用心脏运动的周期性,我们开发了一种高效的采集后同步程序,可从2D图像序列中回顾性地重建4D图像。我们的同步过程假设相邻心脏结构具有相似性,以记录在心脏不同位置获取的图像序列的相位。

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