NMR spectroscopy data recovery method and apparatus
February 4, 2022. 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 ReferencesNMR Imaging of the transverse relaxation time using multiple spin echo sequences Method and apparatus for rapid NMR imaging using multi-dimensional reconstruction techniques Rapid magnetic resonance imaging using multiple phase encoded spin echoes in each of plural measurement cycles Use of repeated gradient echoes for noise reduction and improved NMR imaging Method of magnetic resonance reconstruction imaging from projections using partial data collected in k-space Magnetic resonance imaging apparatus Magnetic resonance imaging apparatus Separation of fat and water magnetic resonance images Magnetic resonance scan calibration and reconstruction technique for multi-shot, multi-echo imaging Magnetic resonance imaging apparatus in which gradient echo signals are acquired at a time distant from the center of a gradient echo InventorsAssigneeApplicationNo. 10/067180 filed on 02/04/2002US Classes:324/307Using a nuclear resonance spectrometer systemExaminersPrimary: Gutierrez, DiegoAssistant: Vargas, Dixomara Attorney, Agent or FirmInternational ClassesG01R 33/46 (20060101)G01R 33/44 (20060101) AbstractNMR spectroscopy data recovery methods and apparatus for improving the quality of an NMR spectrum are disclosed. The NMR spectrum is improved by acquiring more than the half spin-echo data signal and using an iterative numerical method to reconstruct the missing data points of the corresponding full symmetrical spin-echo data signal. The method includes filtering the initial data signal to extract a low-resolution phase term. The low-resolution phase term is used to form a phase-constrained initial data signal, which is Fourier-transformed to obtain a reconstructed data signal. The reconstructed data signal is modified to include the original spin-echo signal data. The formation of the reconstructed spin-echo data signal and subsequent modification is iterated until convergence is obtained. The reconstructed data signal is then Fourier-transformed to form a reconstructed NMR spectrum. | |
