Multichannel radio-frequency signal control system

A radio frequency signal and control system technology, used in medical science, sensors, diagnostic recording/measurement, etc., can solve the problems of local oscillator leakage, I/Q imbalance, etc., to reduce the analog intermediate frequency link, improve the transmission performance, reduce the cost The effect of vibration leakage

Active Publication Date: 2014-09-24
SHANGHAI UNITED IMAGING HEALTHCARE
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Problems solved by technology

[0004] The problem solved by the present invention is to provide a multi-channel radio frequency signal control system to solve the problems of local oscillator leakage and I / Q imbalance caused by the analog frequency mixing method in the multi-channel parallel transmitting system in the prior art, and reduce the noise level and image suppression and is suitable for magnetic resonance equipment requirements of various magnetic field strengths

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Embodiment Construction

[0047] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar extensions without violating the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0048] Secondly, the present invention is described in detail by means of schematic diagrams. When describing the embodiments of the present invention in detail, for convenience of explanation, the schematic diagrams are only examples, which should not limit the protection scope of the present invention.

[0049] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0050] In order to solve the above technical problems, the present invention provides a multi-channel radio fre...

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Abstract

The invention provides a multichannel radio-frequency signal control system. The system comprises a multichannel radio-frequency signal emission unit, a power signal receiving unit and a digital signal processing unit, wherein the multichannel radio-frequency signal emission unit is used for providing first radio-frequency signals of multiple channels; the power signal receiving unit is used for receiving a first power signal fed back by the first radio-frequency signal of any channel in the multichannel radio-frequency signal emission unit; the digital signal processing unit is connected with the multichannel radio-frequency signal emission unit and the power signal receiving unit, is used for processing to-be-emitted radio-frequency signals of the multiple channels and transmitting a first base band signal to the multichannel radio-frequency signal emission unit, receives and processes a second power signal received by the power signal receiving unit and then transmits a third power signal to peripheral equipment. According to the multichannel radio-frequency signal control system, the simulation intermediate frequency process is omitted, the signal performance is improved, the modular design is adopted, the number of the channels can be configured flexibly, and the system can meet requirements of magnetic resonance equipment with various field intensities.

Description

technical field [0001] The invention relates to the technical field of magnetic resonance control, in particular to a multi-channel radio frequency signal control system. Background technique [0002] The radio frequency signal transmission system is a necessary part of the nuclear magnetic resonance imaging equipment. It is used to generate radio frequency excitation signals that can be quickly modulated in frequency, phase and amplitude. Resonance signal: With the development trend of magnetic resonance system to high field, the parallel transmission of multi-channel radio frequency signal has attracted more and more attention. The parallel transmission of multi-channel radio frequency signals is mainly suitable for high-field magnetic resonance systems to solve problems such as the inhomogeneity of the transmission field and the absorption of radio frequency energy. The multi-channel parallel transmission technology needs to generate multiple radio frequencies with adjust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/055
Inventor 胡贤龙王木林钱砾周建帆
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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