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3D TEE Registration with X-Ray Fluoroscopy for Interventional Cardiac Applications

机译：X射线荧光检查的3D TEE配准，适用于介入性心脏应用

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摘要

Live 3D trans-esophageal echocardiography (TEE) and X-ray fluoroscopy provide complementary imaging information for guiding minimally invasive cardiac interventions. X-ray fluoroscopy is most commonly used for these procedures due to its excellent device visualization. However, its challenges include the 2D projection nature of the images and poor soft tissue contrast, both of which are addressed by the use of live 3D TEE imaging. We propose to integrate 3D TEE imaging with X-ray fluoroscopy, providing the capability to co-visualize both the interventional devices and cardiac anatomy, by accurately registering the images using an electro-magnetic tracking system. Phantom trials validating the proposed registration scheme indicate an average accuracy of 2.04 mm with a standard deviation of 0.59 mm. In the future, this system may benefit the guidance and navigation of interventional cardiac procedures such as mitral valve repair or patent foramen ovale closure.
机译：实时3D经食道超声心动图（TEE）和X射线荧光透视检查可提供补充的成像信息，以指导微创心脏干预。 X射线荧光透视法具有出色的设备可视性，因此最常用于这些过程。但是，其挑战包括图像的2D投影特性和较差的软组织对比度，这两者都可以通过使用实时3D TEE成像来解决。我们建议将3D TEE成像与X射线荧光透视检查相集成，通过使用电磁跟踪系统准确地记录图像，从而提供共同可视化介入设备和心脏解剖结构的能力。验证所提议的配准方案的幻影试验表明，平均精度为2.04 mm，标准偏差为0.59 mm。将来，该系统可能有益于介入性心脏手术的指导和导航，例如二尖瓣修复或卵圆孔未闭。

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