Prospective high-resolution respiratory-resolved whole-heart MRI for image-guided cardiovascular interventions.
Prospective high-resolution respiratory-resolved whole-heart MRI for image-guided cardiovascular interventions.
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DOI：
10.1002/mrm.23216
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发表时间：
2012-07
影响因子：
3.3
通讯作者：
Schaeffter, Tobias
中科院分区：
文献类型：
--
作者：
Kolbitsch, Christoph;Prieto, Claudia;Buerger, Christian;Harrison, James;Razavi, Reza;Smink, Jouke;Schaeffter, Tobias
关键词：
心血管疾病，包括心律失常和心力衰竭，通常通过x线透视引导下的经皮手术治疗。使用预先获得的呼吸分辨解剖数据（动态路线图）可以增强目标结构的可视化，该数据显示为x射线透视图像的覆盖层。本文演示了如何使用先前介绍的径向相位编码-相位排序与自动窗口选择方法，从一个呼吸分辨的三维全心采集中获得使用仿射运动模型的动态路线图。对10名志愿者不同心脏区域的呼吸运动进行了分析，结果表明，使用动态路线图可以将不对准误差从10毫米以上减少到1.5毫米以下。此外，研究结果表明，由于径向相位编码轨迹的有利欠采样特性，可以从高度欠采样的图像中获得可靠的运动信息。最后，本文介绍了一名房颤导管消融治疗前的三维动态路线图。
Cardiovascular diseases, including arrhythmias and heart failure, are commonly treated with percutaneous procedures guided by X-ray fluoroscopy. The visualization of the targeted structures can be enhanced using preacquired respiratory-resolved anatomic data (dynamic roadmap), which is displayed as an overlay onto X-ray fluoroscopy images. This article demonstrates how dynamic roadmaps using an affine motion model can be obtained from one respiratory-resolved three-dimensional whole-heart acquisition using the previously introduced Radial Phase Encoding-Phase Ordering with Automatic Window Selection method. Respiratory motion in different regions of the heart was analyzed in 10 volunteers, and it was shown that the use of dynamic roadmaps can reduce misalignment errors from more than 10 down to less than 1.5 mm. Furthermore, the results suggest that reliable motion information can be obtained from highly undersampled images due to the advantageous undersampling properties of the radial phase encoding trajectory. Finally, results of a three-dimensional dynamic roadmap obtained from a patient before catheter ablation for atrial fibrillation treatment are presented.
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影响因子：
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作者：
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影响因子：
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DOI：
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