Method for separate imaging of water and fat based on inversion recovery technology and system

A technology of inversion recovery and water-fat separation, which is applied in the fields of measurement, medical science, and diagnosis using nuclear magnetic resonance image systems, and can solve the problems of time-consuming solution process, obtaining pure water images and pure fat images, and low signal-to-noise ratio of images, etc. question
CN101518445AActive Publication Date: 2009-09-02SIEMENS HEALTHINEERS LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SIEMENS HEALTHINEERS LTD
Publication Date
2009-09-02

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Abstract

The invention discloses a method for separate imaging of water and fat based on inversion recovery technology, which includes the following steps of: determining a first inversion recovery time when the longitudinal magnetization component of hydrogen atomic nucleus in fat or water is zero; respectively selecting a second inversion recovery time and a third inversion time before and after the first inversion recovery time; during the second and the third inversion recovery time, respectively using a scanning sequence to excite a detected object and obtaining two images simultaneously including a pure water image and a pure fat image; synthesizing the two obtained images; and when the synthesis removes the pure fat image included in the two images, obtaining a pure water image, when the synthesis removes the pure water image included in the two images, obtaining a pure fat image. By the use of the invention, the pure water image and the pure fat image can be obtained at one time by using the scanning sequence to excite the detected object and the signal-to-noise ratio of the images is relatively high.
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Description

technical field

[0001] The present invention relates to magnetic resonance imaging technology, in particular to a water-fat separation imaging method and system based on inversion recovery (IR, Inversion Recovery) technology. Background technique

[0002] Magnetic resonance imaging is a technique that uses the phenomenon of magnetic resonance to perform imaging. The principle of magnetic resonance phenomenon mainly includes: atomic nuclei containing a single number of protons, such as hydrogen nuclei widely present in the human body, the protons have spin motion, just like a small magnet, and the spin axes of these small magnets have no certain rules. External magnetic field, these small magnets will be rearranged according to the magnetic force lines of the external magnetic field, specifically in two directions parallel to or antiparallel to the magnetic force lines of the external magnetic field, and the above-mentioned direction parallel to the magnetic force lines of th...

Claims

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