Imaging systems
Patent 4315216 Issued on February 9, 1982. Estimated Expiration Date: 
May 16, 1999. 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.
May 16, 1999. 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 3778614 3924129 Method of obtaining internal information of a measuring target from the out-side by the application of a nuclear magnetic resonance phenomenon Image formation using nuclear magnetic resonance Patent #: 4021726 InventorsAssigneeApplicationNo. 06/039650 filed on 05/16/1979US Classes:324/309, To obtain localized resonance within a sample324/307Using a nuclear resonance spectrometer systemExaminersPrimary: Tokar, MichaelAttorney, Agent or FirmInternational ClassesG01R 33/385 (20060101)G01R 33/54 (20060101) G01R 33/58 (20060101) G01R 33/48 (20060101) G01R 33/565 (20060101) G01R 33/38 (20060101) G05F 7/00 (20060101) Foreign Application Priority Data1978-05-25 GBAbstractNuclear magnetic resonance (NMR) apparatus have beenproposed for examining slices or volumes of bodies, perhaps for medical examination of patients. Magnetic fields are used to induce resonance in a selected region of a body and a resonance signal is detected during a pulse of a gradient field which causes phase dispersion across the region.It is now proposed that more efficient operation of the apparatus is possible if the gradient pulse is a non-square pulse, perhaps a distorted sinusoid, and the resonance signal is sampled during that pulse at intervals such that Þb; Hdt is substantially equal between adjacent samples.Other References
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