Spatial distortion in MRI with application to stereotactic neurosurgery
Morgan, Paul Simon (1999) Spatial distortion in MRI with application to stereotactic neurosurgery. PhD thesis, University of Nottingham.
The aim of this work was to implement a thorough method for quantifying the errors introduced to frame-based neurosurgical stereotactic procedures by the use of MRI. Chang & Fitzpatrick's reversed gradient distortion correction method was used, in combination with a phantom, to measure these errors. Spatial distortion in MR images of between 1 mm and 2 mm was measured. Further analysis showed that this typically introduced an additional error in the coordinate of the actual treatment point of 0.7 mm. The implications of this are discussed.
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