Title: On the problem of geometric distortion in magnetic resonance images for stereotactic neurosurgery
Authors: Michiels, J ×
Bosmans, Hilde
Pelgrims, P
Vandermeulen, Dirk
Gybels, Jan
Marchal, Guy
Suetens, Paul #
Issue Date: Jan-1994
Series Title: Magnetic resonance imaging vol:12 issue:5 pages:749-765
Abstract: In this paper, we discuss the issue of geometric distortion in magnetic resonance (MR) images used to plan stereotactic neurosurgical interventions. We analyze the process for the case of Fourier transform imaging and demonstrate that spatial misregistrations are fundamentally due to two causes: deviations of the magnetic field from its ideal value and blood flow. This enables us to relate the causes of geometric distortion to the MR imaging system, the patient and the stereotactic localizer frame. Based on the general model, we propose model refinements and discuss methods for the quantification and correction of all causes. The results of our calculations and experiments indicate that, using the proposed corrections, MRI and MR angiography should be considered valuable and reliable acquisition modalities for the planning of stereotactic neurosurgical interventions.
ISSN: 0730-725X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Radiology
ESAT - PSI, Processing Speech and Images
× corresponding author
# (joint) last author

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