ESR-enhanced MRI using magnetic particles as contrast agents

Jan Henrik Ardenkjær-Larsen (Inventor), Ib Laursen (Inventor), Ib Leunbach (Inventor), Klaes Golman (Inventor)

Research output: Patent

21 Downloads (Pure)


Superparamagnetic, ferrimagnetic, or ferromagnetic particles are used as contrast agents in ESR-enhanced MRI. Superparamagnetic particles having an ESR linewidth of less than 20G are preferred. The particles may comprise maghemite (gamma Fe 2 O 3 ), magnetite (Fe 3 O 4 ), or mixtures of such oxides. The particles may also comprise mixed metal oxides such as ferrites, hexagonal ferrites, or garnets. Other compositions are disclosed. The size of the particles may be less than 10 nm. The particles may be coated and suspended in an isotonic suspension.

Original languageEnglish
IPCG01R 33/ 28 A I
Patent numberGB2311138
Filing date17/09/1997
CountryUnited Kingdom
Priority date15/03/1996
Priority numberGB19960005482
Publication statusPublished - 17 Sep 1997
Externally publishedYes


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