Power supply circuit for magnetic resonance system and magnetic resonance system

Abstract

The invention provides a power supply circuit for a magnetic resonance system, and the circuit comprises a DC-DC power module which is used for supplying power to an active device in the magnetic resonance system. The input end of the DC-DC power module is connected with an external power supply, and an output end of the DC-DC power module is connected to the active device. A control end of the DC-DC power module is used for receiving an external clock signal, and the frequency of the external clock signal is set outside the frequency range of a radio frequency signal received by a radio frequency receiving coil of the magnetic resonance system. According to the invention, the circuit provided by the invention can enable the DC-DC power module to be placed in a strong magnetism environment, such as a place nearby a magnet hole of the magnetic resonance system, thereby reducing the impact on the DC-DC power module from a strong magnetic field, and guaranteeing that the DC-DC power module can work normally in the magnetic resonance system. Moreover, the circuit can reduce the energy consumption, reduces the cost, and improves the integration degree of the circuit.

Description

technical field [0001] The invention relates to the technical field of magnetic resonance, in particular to a power supply circuit for a magnetic resonance system and a magnetic resonance system. Background technique [0002] In the magnetic resonance system, for electronic components, such as electronic components in any link of the signal chain (radio frequency receiver, radio frequency waveform small signal generation circuit, clock distribution circuit, etc.), control components, radio frequency monitoring components, peripheral auxiliary equipment (man-machine Interactive class, system status monitoring class) must use large-scale digital logic circuits, such as FPGA (Field-Programmable Gate Array, field programmable gate array) or MCU (Microcontroller Unit, micro control unit) or ASIC (Application Specific Integrated Circuit, ASIC). Due to the high sensitivity of the signal receiving link in the magnetic resonance system, it is extremely sensitive to radio frequency i...

AI Technical Summary

Problems solved by technology

However, the linear power supply wastes power and consumes a lot of energy; and when using a linear power supply for power supply, it is necessary to use a heat sink for heat dissipation, and the cost is high

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