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Magnetic resonance signal acquisition system and method

A technology of magnetic resonance signal and acquisition system, applied in the field of medical diagnosis, which can solve problems such as shadows

Active Publication Date: 2021-07-27
GE MEDICAL SYST GLOBAL TECH CO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Existing pulse sequences, especially CUBE sequences, are prone to eddy current effects, making images acquired by MRI scans prone to serious shading at the edge far away from the center of the magnetic field.

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  • Magnetic resonance signal acquisition system and method
  • Magnetic resonance signal acquisition system and method
  • Magnetic resonance signal acquisition system and method

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Embodiment Construction

[0016] Specific implementations of the present invention will be described below. It should be noted that in the process of specific descriptions of these implementations, for the sake of concise description, it is impossible for this specification to describe all the features of the actual implementations in detail. It should be understood that, in the actual implementation process of any embodiment, just like in the process of any engineering project or design project, in order to achieve the developer's specific goals and to meet system-related or business-related constraints, Often a variety of specific decisions are made, and this can vary from one implementation to another. In addition, it will be appreciated that while such development efforts may be complex and lengthy, the technology disclosed in this disclosure will be Some design, manufacturing or production changes based on the content are just conventional technical means, and should not be interpreted as insuffic...

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Abstract

The present invention provides a magnetic resonance signal acquisition system and method. The method includes: controlling a radio frequency system and a gradient system in the magnetic resonance signal acquisition system to send out desired pulse sequences to generate echo chains. The above-mentioned pulse sequence includes: within at least one repetition time among the multiple repetition times, the excitation radio-frequency pulses generated sequentially along the time axis and a plurality of re-focused radio-frequency pulses with equal time intervals; a dephasing gradient pulse generated between the first and second of the refocusing radio frequency pulses; and a plurality of readout gradient pulses sequentially generated after said dephasing gradient pulse within said at least one repetition time.

Description

technical field [0001] The invention relates to the field of medical diagnosis, in particular to a magnetic resonance signal acquisition system and method. Background technique [0002] A magnetic resonance (Magnetic Resonance, MR) signal acquisition system includes a radio frequency system and a gradient system. The radio frequency system includes a transmitting system and a receiving system. The transmitting system is used to transmit radio frequency pulses of a certain frequency and power to resonate the hydrogen protons in the subject. The receiving system is used to receive the magnetic resonance signals generated by the hydrogen protons in the subject. The resonance signal is used for image reconstruction of the detected part of the subject. The gradient system is used to transmit layer selection gradient pulses, phase encoding gradient pulses and frequency encoding gradient pulses (also called readout gradient pulses) to provide three-dimensional position information...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/56
Inventor 魏莫然赖永传章炜炜
Owner GE MEDICAL SYST GLOBAL TECH CO LLC