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Radio frequency transceiving system for 3T nuclear magnetic resonance imager and imaging method

A nuclear magnetic resonance imaging, radio frequency transceiver technology, applied in the direction of using nuclear magnetic resonance imaging system for measurement, magnetic resonance measurement, magnetic variable measurement, etc., can solve the problems of long scanning time and high radio frequency power consumption, so as to reduce radio frequency power consumption, The effect of shortened time

Pending Publication Date: 2021-11-30
成都芯通软件有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The characteristic of this method is that the patient must place the whole body in the radio frequency body coil, and the instrument also needs to scan the whole body to form an image, and the patient usually only expects to detect a certain organ and part of the body, so each scan of the instrument will cause The defects of high radio frequency power consumption and long scanning time

Method used

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  • Radio frequency transceiving system for 3T nuclear magnetic resonance imager and imaging method
  • Radio frequency transceiving system for 3T nuclear magnetic resonance imager and imaging method
  • Radio frequency transceiving system for 3T nuclear magnetic resonance imager and imaging method

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Embodiment 1

[0049] This embodiment provides a radio frequency transceiver system for a 3T nuclear magnetic resonance imager, including a cylindrical antenna array, multiple radio frequency transceiver channels and a spectrometer.

[0050] refer to figure 1 and figure 2, the cylindrical antenna array includes a plurality of antenna units, and the plurality of antenna units form a prism-shaped antenna array, which is used to excite hydrogen atoms in the imaging area of ​​the human body. The number of radio frequency transceiver channels is the same as the number of antenna units, and the multiple radio frequency transceiver channels are communicatively connected to the multiple antenna units. The spectrometer is connected with multiple radio frequency transceiver channels, selects the radio frequency transceiver channel, and outputs the sequence signal in the selected radio frequency transceiver channel; the sequence signal is a digital signal when generated in the spectrometer, and the s...

Embodiment 2

[0071] The present embodiment provides a radio frequency imaging method for a 3T nuclear magnetic resonance imager, comprising the following steps,

[0072] S1. Based on the required imaging site, determine the antenna unit that needs to be activated in the cylindrical antenna array; the imaging site is the designated lesion site of the patient, which is selected through the doctor's preliminary judgment. After selection, select the antenna unit that needs to be activated in the cylindrical antenna array antenna unit.

[0073] S2, based on the antenna unit that needs to be activated, open the corresponding radio frequency transmission channel, output a sequence signal to change the radiation direction and intensity of the antenna unit, and generate a local uniform magnetic field to activate the hydrogen atoms at the imaging site; the activated antenna unit can be in the column A local uniform magnetic field is formed in the body antenna array, and this local uniform magnetic f...

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Abstract

The invention discloses a radio frequency transceiving system for a 3T nuclear magnetic resonance imager and an imaging method. The system comprises a spectrometer, the spectrometer is used for outputting sequence signals, receiving NMR signals and processing the NMR signals to form organ images; the system further comprises a cylinder antenna array and a plurality of radio frequency receiving-transmitting channels; the cylinder antenna array comprises a plurality of antenna units, wherein the antenna units form a prismatic antenna array, the antenna units respond to excitation of the sequence signals to generate a magnetic field and changes the radiation direction and intensity of the generated magnetic field based on the sequence signals; the cylinder antenna array is also used for receiving the NMR signals; and the radio frequency receiving-transmitting channels correspond to the antenna units and are used for connecting the spectrometer and the antenna units, and the radio frequency receiving-transmitting channels respond to selection of the spectrometer so as to be opened or closed. The radio frequency transceiving system has the advantage of energy-saving performance and time-saving performance.

Description

technical field [0001] The invention relates to a medical electronic device, in particular to a radio frequency transceiver system and an imaging method for a 3T nuclear magnetic resonance imager. Background technique [0002] Magnetic resonance imaging equipment is a major advancement in medical imaging technology, with the advantages of clear imaging effects, comprehensive examination of parts and organs, and little impact of radiation on the human body. The nuclear magnetic resonance imaging instrument uses biological magnetic spin technology. Under the action of an external constant magnetic field, the hydrogen atoms in the human body are arranged in an orderly manner; after pulse excitation is generated in the radio frequency transmission channel, the hydrogen atoms in the human body resonate and generate NMR signals. The gradient magnetic field can Given the frequency and phase information of the NMR signal, the radio frequency receiving channel detects that the signal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/34G01R33/36G01R33/48A61B5/055
CPCG01R33/34G01R33/36G01R33/48A61B5/055
Inventor 邱相晗张兵赵翔宇陈卓魏斌李小平
Owner 成都芯通软件有限公司