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Simulated field maps: Toward improved susceptibility artefact correction in interventional MRI

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.
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https://hal.inria.fr/hal-01827221
Contributor : Ninon Burgos <>
Submitted on : Sunday, July 1, 2018 - 10:43:11 PM
Last modification on : Friday, December 4, 2020 - 2:30:01 PM

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Martin Kochan, Pankaj Daga, Ninon Burgos, Mark White, M. Jorge Cardoso, et al.. Simulated field maps: Toward improved susceptibility artefact correction in interventional MRI. Information Processing in Computer-Assisted Interventions – IPCAI 2014, Jun 2014, Fukuoka, Japan. pp.226--235, ⟨10.1007/978-3-319-07521-1_24⟩. ⟨hal-01827221⟩

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