Deformable registration of preoperative MR, pre-resection ultrasound, and post-resection ultrasound images of neurosurgery
Sites that use ultrasound (US) in image-guided neurosurgery (IGNS) of brain tumors generally have three sets of imaging data: preoperative magnetic resonance (MR) image, pre-resection US, and post-resection US. The MR image is usually acquired days before the surgery, the pre-resection US is obtained after the craniotomy but before the resection, and finally, the post-resection US scan is performed after the resection of the tumor. The craniotomy and tumor resection both cause brain deformation, which significantly reduces the accuracy of the MRUS alignment.
image-guided neurosurgery igns non-rigid registration intra-operative ultrasound brain surgery