Pulsed field MRI system with non-resonant excitation
Patent 5057776 Issued on October 15, 1991. Estimated Expiration Date: 
December 8, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 8, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3714551 3774103 InventorApplicationNo. 447800 filed on 12/08/1989US Classes:324/309To obtain localized resonance within a sampleExaminersPrimary: Tokar, MichaelInternational ClassG01R 033/20AbstractA pulsed strong magnetic field is applied to an object creating a magnetic moment distribution. Following the pulse a set of spatially orthogonal gradient fields pointed normal to the magnetic moments are used to cause the magnetic moments to precess around the axis of the gradient fields, producing time-varying magnetic fields indicative of the spatial distribution of the magnetic moments. These are then detected, processed and used to make magnetic resonance images of the object.Field of SearchPARTICLE PRECESSION RESONANCEUsing a nuclear resonance spectrometer system To obtain localized resonance within a sample By scanning sample frequency spectrum With signal decoupling By spectrum storage and analysis Including polarizing magnetic field/radio frequency tuning With conditioning of transmitter signal Spectrometer components Electronic circuit elements | |
