Receiving Method, Receiving System for Magnetic Resonance Signals, and Magnetic Resonance Imaging System
First Claim
1. A system for receiving magnetic resonance signals, the system comprising:
- a receiving coil array comprising at least one coil unit group;
a correlation recording unit configured to record correlations between carrier frequencies and signals received by each coil unit in a corresponding coil unit group of the at least one coil unit group;
a low noise amplification, filtering and frequency mixing unit configured to perform frequency mixing on anti-aliasing filtered signals according to the correlations recorded by the correlation recording unit after performing low noise amplification and anti-aliasing filtering on the signals received by the coil units in the at least one coil unit group to obtain intermediate frequency signals borne on the respectively corresponding carrier frequencies of an identical channel;
an amplification and filtering unit configured to perform amplification and filtering processing on the intermediate frequency signals; and
an analog-to-digital conversion unit configured to perform digital sampling on the signals processed by the amplification and filtering unit to obtain digital domain signals.
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Accused Products
Abstract
A method and system for receiving magnetic resonance signals, and a magnetic resonance imaging system are provided. The method includes dividing coil units in a receiving coil array into different coil unit groups. For each of the coil unit groups, correlations are established between carrier frequencies and the signals received by each coil unit in the coil unit group. Low noise amplification is performed, and filtering and frequency mixing is performed on the signals received by all the coil units in the coil unit group according to the correlations to obtain intermediate frequency signals borne on the respectively corresponding carrier frequencies of an identical channel. After performing amplification and filtering on the intermediate frequency signals, the intermediate frequency signals are output to an analog-to-digital conversion unit to perform digital sampling so as to obtain digital domain signals.
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Citations
15 Claims
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1. A system for receiving magnetic resonance signals, the system comprising:
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a receiving coil array comprising at least one coil unit group; a correlation recording unit configured to record correlations between carrier frequencies and signals received by each coil unit in a corresponding coil unit group of the at least one coil unit group; a low noise amplification, filtering and frequency mixing unit configured to perform frequency mixing on anti-aliasing filtered signals according to the correlations recorded by the correlation recording unit after performing low noise amplification and anti-aliasing filtering on the signals received by the coil units in the at least one coil unit group to obtain intermediate frequency signals borne on the respectively corresponding carrier frequencies of an identical channel; an amplification and filtering unit configured to perform amplification and filtering processing on the intermediate frequency signals; and an analog-to-digital conversion unit configured to perform digital sampling on the signals processed by the amplification and filtering unit to obtain digital domain signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A magnetic resonance imaging system comprising:
a magnetic resonance signal receiving system comprising; a receiving coil array comprising at least one coil unit group; a correlation recording unit configured to record correlations between carrier frequencies and signals received by each coil unit in a corresponding coil unit group of the at least one coil unit group; a low noise amplification, filtering and frequency mixing unit configured to perform frequency mixing on anti-aliasing filtered signals according to the correlations recorded by the correlation recording unit after performing low noise amplification and anti-aliasing filtering on the signals received by the coil units in the at least one coil unit group to obtain intermediate frequency signals borne on the respectively corresponding carrier frequencies of an identical channel; an amplification and filtering unit configured to perform amplification and filtering processing on the intermediate frequency signals; and an analog-to-digital conversion unit configured to perform digital sampling on the signals processed by the amplification and filtering unit to obtain digital domain signals.
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13. A method for receiving magnetic resonance signals, the method comprising:
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after performing low noise amplification and anti-aliasing filtering on signals received by coil units in a coil unit group, performing frequency mixing on the anti-aliasing filtered signals according to correlations between carrier frequencies and the signals received by each coil unit in the coil unit group to obtain intermediate frequency signals borne on the respectively corresponding carrier frequencies of an identical channel; and after amplifying and filtering the intermediate frequency signals, outputting the amplified and filtered intermediate frequency signals to an analog-to-digital conversion unit to perform digital sampling so as to obtain digital domain signals. - View Dependent Claims (14, 15)
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Specification