A method for fitting magnetic resonance imaging multi-echo magnetic field distribution map
A technology of magnetic resonance imaging and magnetic field distribution, which is applied in magnetic resonance measurement, measurement with nuclear magnetic resonance image system, measurement of magnetic variables, etc., can solve the problem of not checking the phase linearity of data points, the reduction of echo signal strength, and the influence of field diagrams Fitting accuracy and other issues
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[0035] The present invention will be described in further detail in conjunction with the following specific embodiments and accompanying drawings. The process of implementing the present invention, conditions, experimental scheme methods, etc., except the content specifically mentioned below, are common knowledge and common knowledge in the art, and the present invention has no special limitation content.
[0036] The method for fitting the magnetic resonance imaging multi-echo magnetic field distribution map proposed by the invention checks the phase linearity according to the set threshold before fitting the conventional field map. According to the phase linearity degree of each data point, or keep all the echo signals or discard part of the echo signals or discard all the echo signals, so as to improve the accuracy of the field map fitting, the point where the echo signals are discarded The local magnetic field is replaced by the average value of the local magnetic fields o...
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