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Positive contrast visualization of nitinol devices using susceptibility gradient mapping
2008
Magnetic Resonance in Medicine
MRI visualization of devices is traditionally based on the signal loss due to T 2 * effects originating from the local susceptibility differences. To visualize nitinol devices with positive contrast a recently introduced post processing method is adapted to map the induced susceptibility gradients. This method operates on regular gradient echo MR images and maps the shift in k-space in a (small) neighborhood of every voxel by Fourier analysis followed by a center of mass calculation. The
doi:10.1002/mrm.21688
pmid:18727096
pmcid:PMC2627583
fatcat:mtprsodwsfb55odrtuhpjp2rvm