École Polytechnique de Montréal, 2500, chemin de Polytechnique, and Hôpital Ste-Justine, Chemin de la Côte-Sainte-Catherine, Montréal H3T 1J4, Canada.
Comput Med Imaging Graph. 2012 Jul;36(5):410-8. doi: 10.1016/j.compmedimag.2012.03.003. Epub 2012 Apr 10.
This paper presents a magnetic resonance image (MRI)/X-ray spine registration method that compensates for the change in the curvature of the spine between standing and prone positions for scoliotic patients. MRIs in prone position and X-rays in standing position are acquired for 14 patients with scoliosis. The 3D reconstructions of the spine are then aligned using an articulated model which calculates intervertebral transformations. Results show significant decrease in registration error when the proposed articulated model is compared with rigid registration. The method can be used as a basis for full body MRI/X-ray registration incorporating soft tissues for surgical simulation.
本文提出了一种用于脊柱侧凸患者的磁共振图像（MRI）/X 射线脊柱配准方法，该方法可补偿站立位和俯卧位之间脊柱曲率的变化。对 14 例脊柱侧凸患者进行了俯卧位 MRI 和站立位 X 射线检查。然后，使用关节模型对齐脊柱的 3D 重建，该模型计算椎间变换。结果表明，与刚体配准相比，所提出的关节模型的配准误差显著降低。该方法可作为包含软组织的全身 MRI/X 射线配准的基础，用于手术模拟。
