Magnetic resonance temperature measurement method and magnetic resonance temperature measurement system

Abstract

A magnetic resonance temperature measurement method comprises the following steps of sparsely sampling to obtain a navigation data set and an image data set, and rebuilding to obtain corresponding phase pictures; obtaining phase change values of an area to be tested through the phase pictures; and obtaining temperature change values of the area to be tested through the phase change values. In the magnetic resonance temperature measurement method and a magnetic resonance temperature measurement system, two groups of data can be collected through view, images with high space-time resolution ratio can be rebuilt, simultaneously phase information in the images is not affected in the rebuilding process, and corresponding phase pictures can be obtained. Therefore, temperature change values can be measured according to the phase pictures, real-time monitoring on temperature change in magnetic resonance is achieved, and simultaneously requirements of high time resolution ratio and high space resolution ratio for the images are met.

Description

【Technical field】 [0001] The invention relates to magnetic resonance imaging technology, in particular to a method and system for measuring magnetic resonance temperature. 【Background technique】 [0002] Tumor thermal ablation has the advantages of small trauma and low postoperative recurrence rate, so it is widely used in the treatment of prostate and uterine fibroids. Tumor thermal ablation is to increase the temperature of lesion tissue by heating and kill it. Therefore, for To ensure the smooth progress of tumor thermal ablation in the treatment, it is necessary to quickly and accurately measure the temperature changes in the diseased tissue, so that doctors can understand the current treatment effect, predict the necrotic area, modify the treatment plan in time, and avoid damaging the health around the diseased area. organize. [0003] Because the temperature measurement technology based on magnetic resonance can not only accurately locate the lesion tissue, but also c...

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Problems solved by technology

[0004] Traditional tumor thermal ablation uses traditional scanning sequences for imaging, these scanning sequences include echo planar imaging (EPI for short) and gradient echo sequences, etc. Although the images obtained through image acquisition through these scanning sequences It can better maintain the phase information in the image, and can accurately measure the temperature change through the maintained phase information, but it cannot be used in dynamic imaging or when the temporal and spatial resolution of imaging is high. Meet the requirements, therefore, real-time monitoring of temperature changes cannot be achieved

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