The codes for measuring magnetic susceptibility

Efficient method to measure the magnetic susceptibility of the materials with arbitrary shape using B0 inhomogeneity map.

These codes are for measuring the magnetic susceptibility of the materials which have arbitrary shape by linear fitting of reconstructed and simulated B0 inhomogeneity maps. With the phantom composed of gel (bottom) and object (top) parts, two B0 maps of gel are obtained with and without the interested material in the upper part by MRI. Then the B0 inhomogeneity map only influenced by the material is reconstructed by subtraction between the two B0 maps. In addition, a simulated B0 inhomogeneity map is calculated by gSVC code (Seung-Kyun Lee 2018) using the location, volume, and shape information of the material obtained from a magnitude image. With this method, magnetic susceptibility of arbitrarily shaped materials can be measured with no flow artifact, and with efficient scan time and higher accuracy.
The codes should be used by the order specified in the ‘master.m’.