Onieva Jorge Onieva, Marti-Fuster Berta, de la Puente María Pedrero, José Estépar Raúl San
Applied Chest Imaging Laboratory, Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
Image Anal Mov Organ Breast Thorac Images (2018). 2018 Sep;11040:284-294. doi: 10.1007/978-3-030-00946-5_28. Epub 2018 Sep 12.
Image registration is a well-known problem in the field of medical imaging. In this paper, we focus on the registration of chest inspiratory and expiratory computed tomography (CT) scans from the same patient. Our method recovers the diffeomorphic elastic displacement vector field (DVF) by jointly regressing the direct and the inverse transformation. Our architecture is based on the RegNet network but we implement a reinforced learning strategy that can accommodate a large training dataset. Our results show that our method performs with a lower estimation error for the same number of epochs than the RegNet approach.
图像配准是医学成像领域一个广为人知的问题。在本文中，我们专注于同一患者的胸部吸气和呼气计算机断层扫描（CT）的配准。我们的方法通过联合回归正向和反向变换来恢复微分同胚弹性位移矢量场（DVF）。我们的架构基于RegNet网络，但我们实施了一种强化学习策略，该策略可以适应大型训练数据集。我们的结果表明，在相同的训练轮数下，我们的方法比RegNet方法具有更低的估计误差。
