Magnetic Deposits of Iron Oxides in the Human Brain

Abstract

Deposits of iron oxides in the human brain (globus pallidus) are visible under electron microscopy as object of regular and or/irregular shape but giving sharp diffraction patterns in the transmission mode. The SQUID magnetometry reveals that the magnetization curves decline form an ideal Langevin function due to the dominating diamagnetism of organic tissue. The fitting procedure yields the quantitative characteristics of the overall magnetization curves that were further processed by statistical multivariate methods

Keywords

• human brain
• electron microscopy
• iron oxides
• hematite
• magnetite
• maghemite
• SQUID magnetometry