Table 1 Principal endogenous and exogenous substances, listed according to their magnetic susceptibility
From: Magnetism of materials: theory and practice in magnetic resonance imaging
Diamagnetic | Â | Â |
Water | Fat | Proteins |
Calcium (Ca) | Collagen | Lead (Pb) |
Oxyhemoglobin | Â | |
Paramagnetic | Â | Â |
Gadolinium (Gd) | Cupric ion (Cu2+) | Aluminum (Al) |
Hydroxyl radical (·OH) | Magnesium (Mg) | Manganese (Mn) |
Melanin | Methemoglobin | Ferrous Oxide (FeO) |
Molecular oxygen (O2) | Titanium (Ti) | Â |
Superparamagnetic | Â | Â |
Ferritin | Hemosiderin | Deoxyhemoglobin |
Ferromagnetic | Â | Â |
Iron (Fe) | Cobalt (Co) | Nickel (Ni) |
Alloys of iron (e.g., steel) | Alloys of rare-earth metals | Â |