Method for realizing single-voxel localized two-dimensional phase-sensitive J-decomposition spectrum

A technology of localized spectrum and spectral method, applied in the field of single-element localized two-dimensional phase-sensitive J-decomposition spectrum, can solve the problem of reducing signal resolution, etc., and achieve the effect of high resolution
CN108680884AInactive Publication Date: 2018-10-19XIAMEN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAMEN UNIV
Publication Date
2018-10-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for realizing a single-voxel localized two-dimensional phase-sensitive J-decomposition spectrum. On the basis of a JPRESS sequence, a new sequence formed by a PYSCHE decoupling module formed by one pair of small-angle inverted sweep pulses and corresponding weak gradient fields and phased gradient fields is inserted before two 180-degree localized pulses, wherein the sequence is formed by N sequences formed at two sides of the 180-degree localized pulses before the PYSCHE decoupling module and P sequences formed at the two sides of the 180-degree localized pulses after the PYSCHE decoupling module during indirect dimensional evolution time; and the two-dimensional spectrum obtained by an N sequence experiment is overturned symmetrically along the indirect dimension F1=10 Hz and then the overturned two-dimensional spectrum is overlapped with a two-dimensional spectrum obtained by a P sequence experiment to obtain single-voxel localized two-dimensional phase-sensitive J-decomposition spectrum.
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Description

technical field

[0001] The invention relates to obtaining a two-dimensional localized J-decomposition spectrum on a nuclear magnetic resonance imaging instrument, in particular to a single-pixel localized two-dimensional phase-sensitive J-decomposition spectrum method that can be obtained by sampling on a nuclear magnetic resonance imaging instrument. Background technique

[0002] Magnetic resonance localization (MRS) was developed in combination with nuclear magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR). Chemical composition and structure technology. Because MRS technology can realize non-invasive quantitative detection of selected tissues, it is an important bridge linking biochemical changes and disease pathology. At present, MRS technology has been used as a supplementary research tool of MRI technology, and has been widely used in clinical and medical research fields. Among them, point-resolved spectroscopy (Bottomley PA. Spatial Localization i...

Claims

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