Method for reducing spin-lattice relaxation time of silicone fluids used in magnetic resonance imaging

摘要

A method for reducing the calibration time of magnetic imaging resonance systems at fields of 1 Tesla or higher utilizing silicone oil type phantom tanks. A small amount of a non-ionic paramagnetic compound such as gadolinium beta-diketonate (a common metallocomplex) is added to the silicone oil to reduce the spin-lattice relaxation time of the silicone oil in magnetic resonance phantoms. The amount of reduction of the spin lattice relaxation time is inversely proportional to the amount of paramagnetic compound added to the silicone oil in a given phantom tank and thus can be controlled in a precise manner.