Impact of 3-Dimensional Versus 2-Dimensional Image Distortion Correction on Stereotactic Neurosurgical Navigation Image Fusion Reliability for Images Acquired With Intraoperative Magnetic Resonance Imaging.

Autor:	Yahanda AT; Department of Neurosurgery, Washington University School of Medicine, St. Louis, Missouri., Goble TJ; IMRIS, Deerfield Imaging Inc, Minnetonka, Minnesota., Sylvester PT; Department of Neurosurgery, Washington University School of Medicine, St. Louis, Missouri., Lessman G; IMRIS, Deerfield Imaging Inc, Minnetonka, Minnesota., Goddard S; Barnes-Jewish Hospital, St. Louis, Missouri., McCollough B; Barnes-Jewish Hospital, St. Louis, Missouri., Shah A; Department of Neurosurgery, Washington University School of Medicine, St. Louis, Missouri., Andrews T; Department of Radiology, Washington University School of Medicine, St. Louis, Missouri., Benzinger TLS; Department of Neurosurgery, Washington University School of Medicine, St. Louis, Missouri.; Department of Radiology, Washington University School of Medicine, St. Louis, Missouri., Chicoine MR; Department of Neurosurgery, Washington University School of Medicine, St. Louis, Missouri.
Jazyk:	angličtina
Zdroj:	Operative neurosurgery (Hagerstown, Md.) [Oper Neurosurg (Hagerstown)] 2020 Oct 15; Vol. 19 (5), pp. 599-607.
DOI:	10.1093/ons/opaa152
Abstrakt:	Background: Fusion of preoperative and intraoperative magnetic resonance imaging (iMRI) studies during stereotactic navigation may be very useful for procedures such as tumor resections but can be subject to error because of image distortion. Objective: To assess the impact of 3-dimensional (3D) vs 2-dimensional (2D) image distortion correction on the accuracy of auto-merge image fusion for stereotactic neurosurgical images acquired with iMRI using a head phantom in different surgical positions. Methods: T1-weighted intraoperative images of the head phantom were obtained using 1.5T iMRI. Images were postprocessed with 2D and 3D image distortion correction. These studies were fused to T1-weighted preoperative MRI studies performed on a 1.5T diagnostic MRI. The reliability of the auto-merge fusion of these images for 2D and 3D correction techniques was assessed both manually using the stereotactic navigation system and via image analysis software. Results: Eight surgical positions of the head phantom were imaged with iMRI. Greater image distortion occurred with increased distance from isocenter in all 3 axes, reducing accuracy of image fusion to preoperative images. Visually reliable image fusions were accomplished in 2/8 surgical positions using 2D distortion correction and 5/8 using 3D correction. Three-dimensional correction yielded superior image registration quality as defined by higher maximum mutual information values, with improvements ranging between 2.3% and 14.3% over 2D correction. Conclusion: Using 3D distortion correction enhanced the reliability of surgical navigation auto-merge fusion of phantom images acquired with iMRI across a wider range of head positions and may improve the accuracy of stereotactic navigation using iMRI images. (Copyright © 2020 by the Congress of Neurological Surgeons.)
Databáze:	MEDLINE
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