Assessment of Hernia Mesh Shrinkage using Fourier Analysis of Susceptibility Gradients

The purpose of this study was to evaluate a method analysing the mesh related susceptibility gradients to assess mesh shrinkage. Three iron oxide-loaded MR-visible mesh implants in different configurations (shrunk from 14 to 48 % )were placed in an agarose phantom. MRI was performed at a 1.5 T scanner using a GRE sequences and SG- maps were calculated. A Fourier analysis was performed on ten small rectangular areas, resulting in one frequency spectrum indicating the alternating susceptibility induced magnetic field gradients. We propose an approach to assess local configuration changes in iron oxide- loaded mesh implants without extensive 3D postprocessing.

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