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Noise reduction method and system for converting fse sequence gradient waveform into triangle

A noise reduction system and triangle technology, applied in scientific instruments, analytical materials, magnetic resonance measurement, etc., can solve the problems of aggravating the blurring degree of the image and prolonging the gradient duration, so as to reduce the noise and reduce the gradient switching rate.

Active Publication Date: 2019-10-29
SHENZHEN ANKE HIGH TECH CO LTD
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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a noise reduction method and system for converting FSE sequence gradient waveforms into triangles, aiming to solve the problem of reducing noise by reducing the gradient switching rate and gradient strength in the prior art. The duration will be greatly extended, and for the FSE sequence, it will aggravate the defect of image blur

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  • Noise reduction method and system for converting fse sequence gradient waveform into triangle

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[0040] The present invention provides a noise reduction method and system for converting FSE sequence gradient waveforms into triangles. In order to make the purpose, technical solutions and effects of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0041] Please refer to figure 1 , which is a flowchart of a preferred embodiment of the noise reduction method for converting FSE sequence gradient waveforms into triangles according to the present invention. Such as figure 1 As shown, the described denoising method that the FSE sequence gradient waveform is converted into a triangle includes the following steps:

[0042] Step S100, obtaining the initial FSE sequence, and obtaining the trapezoidal gradient waveform corresponding to the layer selection gradient, the rea...

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Abstract

The invention discloses a method and system for noise reduction through converting an FSE (Fast Spin Echo) sequence gradient waveform into triangular. The method comprises the steps of acquiring an initial FSE sequence, and acquiring a trapezoidal-shaped gradient waveform corresponding to the layer selection gradient, the reading gradient and the phase encoding gradient of the initial FSE sequence; and modifying the trapezoidal-shaped gradient waveform into a triangular shape. According to the invention, the waveform of each gradient in the FSE sequence is changed, that is, the original trapezoidal gradient is changed into triangular gradient so as to reduce the gradient switching rate in scanning, and thus the noise is reduced.

Description

technical field [0001] The invention relates to the technical field of magnetic resonance sequences, in particular to a noise reduction method and system for converting FSE sequence gradient waveforms into triangles. Background technique [0002] At present, due to the relatively high switching rate of superconducting magnetic resonance gradients, the magnetic resonance noise is relatively large, which brings discomfort to patients. Various manufacturers have also taken sound insulation measures on hardware, but they still cannot fundamentally solve the problem. [0003] FSE (fast spin echo, fast spin echo) is the most commonly used scanning sequence in clinical practice. The disadvantage of the existing technology is that it only changes the slope of the gradient ascending segment and descending segment. If the slope becomes smaller, the duration of the gradient (gradient The duration is the time between when the gradient is applied from the beginning to the end) is signif...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/20
CPCG01R33/20
Inventor 武文鹏孙治国
Owner SHENZHEN ANKE HIGH TECH CO LTD
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