Phantom-Based Evaluation of Gradient Nonlinearity for Quantitative Neurological MRI Studies
Mallozzi R, Gunter J, Jack, JR. C, Levy J, Blezek D
GE Global Research
Structural MRI is a promising technique to diagnose and track the progression of Alzheimer's Disease. Quantitative structural studies require precise control of geometric distortion, both longitudinally and between scanners. We have developed a phantom-based method for evaluating and correcting distortion due to gradient nonlinearity for use in quantitative MRI studies.