A Two-Dimensional Spectral Inversion Algorithm for Low-field NMR
A low-field nuclear magnetic resonance and inversion algorithm technology, which is applied in magnetic resonance measurement, measurement using NMR imaging system, and magnetic variable measurement, etc., to achieve high calculation accuracy, stable inversion results, and simplified inversion process.
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[0028] The specific embodiments provided by the present invention will be described in detail below in conjunction with the accompanying drawings.
[0029] as attached figure 1 As shown, a low-field NMR two-dimensional spectrum inversion algorithm based on PDCO includes the following steps:
[0030] a. Read the raw data files collected by the low-field nuclear magnetic resonance equipment.
[0031] Read the raw data files collected by the low-field nuclear magnetic resonance equipment, and extract information such as sampling time and corresponding sampling data M contained in the data files.
[0032] b. Perform preprocessing operations such as horizontal relaxation time and longitudinal relaxation time distribution on the original data, matrix splicing, tensor product, etc. to obtain the inversion core matrix K and signal amplitude m.
[0033] The two-dimensional inversion problem is to solve the Fredholm integral equation with two kernels shown in formula (1), τ 2 Indicat...
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