Abstract
Intraoperative MRI is a powerful modality for acquiring structural and functional images of the brain to enable precise image-guided neurosurgery. In this paper, we propose a novel method for simulating main magnetic field inhomogeneity maps during intraoperative MRI-guided neurosurgery. Our method relies on an air-tissue segmentation of intraoperative patient specific data, which is used as an input to a subsequent field simulation step. The generated simulation can then be used to enhance the precision of image-guidance. We report results of our method on 12 patient datasets acquired during image-guided neurosurgery for anterior lobe resection for surgical management of focal temporal lobe epilepsy. We find a close agreement between the field inhomogeneity maps acquired as part of the imaging protocol and the simulated field inhomogeneity maps generated by the proposed method.
Keywords
- image-guided neurosurgery
- interventional MRI
- inhomogeneity field map simulation
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Kochan, M. et al. (2014). Simulated Field Maps: Toward Improved Susceptibility Artefact Correction in Interventional MRI. In: Stoyanov, D., Collins, D.L., Sakuma, I., Abolmaesumi, P., Jannin, P. (eds) Information Processing in Computer-Assisted Interventions. IPCAI 2014. Lecture Notes in Computer Science, vol 8498. Springer, Cham. https://doi.org/10.1007/978-3-319-07521-1_24
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DOI: https://doi.org/10.1007/978-3-319-07521-1_24
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-07520-4
Online ISBN: 978-3-319-07521-1
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