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首页> 外文会议>Asilomar Conference on Signals, Systems and Computers >Reconstructing high-resolution cardiac MR movies from under-sampled frames
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Reconstructing high-resolution cardiac MR movies from under-sampled frames

机译：从欠采样帧重建高分辨率心脏MR电影

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In medicine, high-resolution magnetic resonance imaging can aid accurate diagnosis. However, high-resolution magnetic resonance imaging usually necessitates a longer acquisition time than low-resolution imaging, since the resolution of magnetic resonance images is determined by the extent of k-space that is sampled. Long scan times can induce motion artifacts in the images and lead to patient discomfort, and therefore, scan times should be kept as low as possible. Although a short acquisition time comes at the expense of spatial resolution, the resolution of magnetic resonance images can be increased using post-processing methods. In this work, we present one such method designed for cardiac magnetic resonance movies. Our method uses deformable image registration to capture the motion of the heart, and an additional term to account for changes in pixel intensity. We demonstrate that our method has the potential to reconstruct high-resolution cardiac magnetic resonance movies from highly under-sampled data, using only a single high-resolution reference frame.
机译：在医学上，高分辨率磁共振成像可以帮助进行准确的诊断。但是，高分辨率磁共振成像通常需要比低分辨率成像更长的采集时间，因为磁共振图像的分辨率取决于采样的k空间的程度。较长的扫描时间会在图像中引起运动伪像并导致患者不适，因此，扫描时间应保持尽可能短。尽管短的采集时间以空间分辨率为代价，但是可以使用后处理方法来提高磁共振图像的分辨率。在这项工作中，我们提出了一种设计用于心脏磁共振电影的方法。我们的方法使用可变形的图像配准来捕获心脏的运动，并使用一个附加术语来说明像素强度的变化。我们证明了我们的方法具有潜力，仅使用单个高分辨率参考帧，即可从高度欠采样的数据中重建高分辨率的心脏磁共振电影。

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