A study of MRI gradient echo signals from discrete magnetic particles with considerations of several parameters in simulations

Modeling MRI signal behaviors in the presence of discrete magnetic particles is important, as magnetic particles appear in nanoparticle labeled cells, contrast agents, and other biological forms of iron. Currently, many models that take into account the discrete particle nature in a system have been used to predict magnitude signal decays in the form of R2* or R2 ’ from one single voxel. Little work has been done for predicting phase signals. In addition, most calculations of phase signals rely on the assumption that a system containing discrete particles behaves as a continuous medium.
Source: Magnetic Resonance Imaging - Category: Radiology Authors: Source Type: research