Poot D H J, Van Meir V, Sijbers J
BIGR, Erasmus Medical Center, Rotterdam.
Med Image Comput Comput Assist Interv. 2010;13(Pt 1):615-22. doi: 10.1007/978-3-642-15705-9_75.
In this paper, a method is developed that reconstructs a high resolution image from an arbitrary set of multi-slice 3D MR images with a high in-plane resolution and a low through-plane resolution. Such images are often recorded to increase the efficiency of the acquisition. With a model of the acquisition of MR images, which is improved compared to previous super-resolution methods for MR images, a large system with linear equations is obtained. With the conjugated gradient method and this linear system, a high resolution image is reconstructed from MR images of an object. Also, a new and efficient method to apply an affine transformation to multi-dimensional images is presented. This method is used to efficiently reconstruction the high resolution image from multislice MR images with arbitrary orientations of the slices.
本文提出了一种方法，可从任意一组具有高平面分辨率和低层间分辨率的多层3D MR图像重建高分辨率图像。记录此类图像通常是为了提高采集效率。通过改进的MR图像采集模型（与之前的MR图像超分辨率方法相比），可得到一个大型线性方程组。利用共轭梯度法和该线性系统，从物体的MR图像重建高分辨率图像。此外，还提出了一种将仿射变换应用于多维图像的新型高效方法。该方法用于从具有任意切片方向的多层MR图像高效重建高分辨率图像。
