Method for correcting magnetic resonance image distortion for frame-based stereotactic surgery, with preliminary results.
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.
Sumanaweera
T S
TS
Department of Radiology, Stanford University School of Medicine, California 94305-5488, USA. sumane@grapes.stanford.edu
Adler
J R
JR
Glover
G H
GH
Hemler
P F
PF
van den Elsen
P A
PA
Martin
D
D
Napel
S
S
D006257:Head / Q000033:anatomy & histology; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging; D009493:Neurosurgery; D019047:Phantoms, Imaging; D013238:Stereotaxic Techniques