Accelerated scanning method and system of MRI system

A scanning method and scanning system technology, applied in the field of magnetic resonance imaging, can solve the problems of inability to cope with the needs of clinical applications, the appearance of artifacts, and the difficulty of the subjects to adhere to, so as to meet the needs of clinical scanning, less high-frequency signals, and better resolution. The effect of less rate loss

Pending Publication Date: 2022-04-12
SHENZHEN BASDA MEDICAL APP
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Problems solved by technology

For example, in abdominal scanning that requires breath-holding, it is often difficult for the subject to persist for a long time, unable to meet the needs of some clinical applications, and at the same time constrained by the hardware conditions of the system
For example, in some permanent magnet low field MRI systems, due to the influence of the distribution of receiving coil elements, artifacts will appear when applying parallel imaging acceleration

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  • Accelerated scanning method and system of MRI system
  • Accelerated scanning method and system of MRI system
  • Accelerated scanning method and system of MRI system

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Embodiment Construction

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0018] The scan time of magnetic resonance is usually mainly determined by the TR time (repetition time) and the number of phase encodings acquired. Since the TR time mainly affects the contrast in clinical practice, it has clinical significance and cannot be changed arbitrarily. Therefore, most of the technical solutions for accelerating scanning are realized around reducing the number of phase encodings actually acquired. The disadvantage of the existing techn...

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Abstract

The invention discloses an accelerated scanning method and system of an MRI (Magnetic Resonance Imaging) system. The method comprises the following steps: determining the line number of data under-acquisition according to interface sharing factor parameters; determining a phase coding table of odd and even slice layers; performing data acquisition according to the phase encoding table; performing data recovery on the line number of the data which is not acquired; the method does not depend on hardware configuration of a system, and compared with a traditional scheme, the method has the advantages that the lost high-frequency signals are less, the resolution loss is less, and the method can be combined with the traditional scheme to meet clinical scanning requirements.

Description

technical field [0001] The invention relates to magnetic resonance imaging technology, in particular to an accelerated scanning method and system of an MRI system. Background technique [0002] When scanning for the MRI system, the scanning time is longer than other imaging methods, and some human body movements (such as breathing) during this period will produce obvious motion artifacts, so it is necessary to develop accelerated scanning technology. At present, more mature accelerated scanning techniques include: half-Fourier scanning, parallel imaging, etc. The parallel imaging technology is limited by the channel distribution of the receiving coils in the phase encoding direction, and its acceleration is limited by the hardware configuration of the receiving coils. However, traditional K-space undersampling techniques such as half-Fourier will lose more image resolution. At present, in the clinical scanning requirements that require high scanning time, the adopted schem...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/54
Inventor 云天梁彭建中
Owner SHENZHEN BASDA MEDICAL APP
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