Method for Correcting Magnetic Resonance Image Distortion for Frame-Based Stereotactic Surgery, with Preliminary Results

Thilaka S. Sumanaweera Departments of Radiology, Stanford University School of Medicine, Stanford, CaliforniaCorrespondence[email protected]

John R. Adler Departments of Neurosurgery, Stanford University School of Medicine, Stanford, California

Gary H. Glover Departments of Radiology, Stanford University School of Medicine, Stanford, California

Paul F. Hemler Departments of Neurosurgery, Stanford University School of Medicine, Stanford, California

Petra A. van den Elsen Departments of Neurosurgery, Stanford University School of Medicine, Stanford, California

David Martin Departments of Radiology, Stanford University School of Medicine, Stanford, California

Sandy Napel Departments of Radiology, Stanford University School of Medicine, Stanford, California; Departments of Neurosurgery, Stanford University School of Medicine, Stanford, California

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Abstract

We previously described a technique for correcting patient-specific magnetic field inhomogeneity spatial distortion in magnetic resonance images (MRI), which was not applicable to patients fitted with MRI-compatible stereotactic fiducial frames. Here we describe an improvement to the technique that permits application for these patients. Measurements with a cadaver head show that this method achieves MRI stereotactic localization accuracy of 1 mm.

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Method for Correcting Magnetic Resonance Image Distortion for Frame-Based Stereotactic Surgery, with Preliminary Results

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Method for Correcting Magnetic Resonance Image Distortion for Frame-Based Stereotactic Surgery, with Preliminary Results

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