Tissue Content | Susceptibility Effect | Signal Intensity on GRE-T2* | Signal Intensity on SWI | Signal Intensity on QSM |
---|---|---|---|---|
Calcium | Diamagnetism | Hypointense | Hypointense | Hypointense |
Myelin | Diamagnetism | Isointense | Isointense | Isointense |
Variable degree of micronecrosis, edema, gliosis, demyelination, and macromolecules | Diamagnetism | Hyperintense | Isointense or hyperintense | Isointense |
Extensive degree of demyelination | Loss of diamagnetism (paramagnetism) | Hyperintense | Isointense or hyperintense | Hyperintense |
Iron | Paramagnetism | Hypointense | Hypointense | Hyperintense |