Abstract: A tuning/detuning structure and a detuning method for an RF coil use an RF power source, a first impedance circuit, a first RF line, and a first port having a first guide leg end and a first input end, with the first guide leg end being connected to a first end ring capacitance of the RF coil. When the RF coil needs to be detuned, the first input end is connected to the first impedance circuit via the first RF line. When the RF coil needs to transmit an RF pulse signal, the first input end is connected to the RF power source via the first RF line. The need for a switch element is thereby reduced as is harm resulting from breakdown of such a switch element. An impedance circuit can be combined with a switch element to realize detuning jointly, and a good detuning effect can be achieved by a small number of switch elements.

Abstract: An end ring port structure of an atypical coil for a magnetic resonance imaging system, has an end ring, provided with multiple end ring capacitance positions for disposing equivalent capacitances, with a portion of the equivalent capacitances being formed by two or more split capacitors. A first port has a first leg and a second leg, which are each connected to the end ring. A second port has a third leg and a fourth leg, which are each connected to the end ring. A first capacitor bank is arranged on the end ring between an end ring connection point of the first leg and an end ring connection point of the second leg. The first capacitor bank has at least two capacitors not all belonging to the same end ring capacitance position. A second capacitor bank is arranged on the end ring between an end ring connection point of the third leg and an end ring connection point of the fourth leg. The second capacitor bank has at least two capacitors not all belonging to the same end ring capacitance position.

Abstract: A tuning/detuning structure and a detuning method for an RF coil use an RF power source, a first impedance circuit, a first RF line, and a first port having a first guide leg end and a first input end, with the first guide leg end being connected to a first end ring capacitance of the RF coil. When the RF coil needs to be detuned, the first input end is connected to the first impedance circuit via the first RF line. When the RF coil needs to transmit an RF pulse signal, the first input end is connected to the RF power source via the first RF line. The need for a switch element is thereby reduced as is harm resulting from breakdown of such a switch element. An impedance circuit can be combined with a switch element to realize detuning jointly, and a good detuning effect can be achieved by a small number of switch elements.

Abstract: An end ring port structure of an atypical coil for a magnetic resonance imaging system, has an end ring, provided with multiple end ring capacitance positions for disposing equivalent capacitances, with a portion of the equivalent capacitances being formed by two or more split capacitors. A first port has a first leg and a second leg, which are each connected to the end ring. A second port has a third leg and a fourth leg, which are each connected to the end ring. A first capacitor bank is arranged on the end ring between an end ring connection point of the first leg and an end ring connection point of the second leg. The first capacitor bank has at least two capacitors not all belonging to the same end ring capacitance position. A second capacitor bank is arranged on the end ring between an end ring connection point of the third leg and an end ring connection point of the fourth leg. The second capacitor bank has at least two capacitors not all belonging to the same end ring capacitance position.

Abstract: A debugging device for a body coil of a magnetic resonance imaging (MRI) system includes a pair of output ports connected to a pair of input ports of the body coil. The debugging device also includes a pair of input ports connected to a pair of output ports of the MRI system. The debugging device includes a pair of extension circuits, separately connected between the pair of input ports and the pair of output ports; and a first adjustment capacitor for reducing or eliminating coupling between the pair of input ports. The first adjustment capacitor is bridged between the pair of input ports, and the capacitance of the first adjustment capacitor is variable.

Abstract: A mode matrix processor of a magnetic resonance imaging system includes an input unit, an output unit, an operation unit, and a control unit, wherein the input unit is used for receiving a number of digital magnetic resonance signals; the operation unit is used for performing a linear combination operation on the plurality of digital magnetic resonance echo signals, to obtain at least one digital mode signal; the output unit is used for sending the at least one digital mode signal; and the control unit controls, according to the number of the digital magnetic resonance signals, the operation unit to perform the linear combination operation. The mode matrix processor of a magnetic resonance imaging system according to a specific embodiment of the present invention has desirable portability between different systems. The mode matrix processor of a magnetic resonance imaging system according to a specific embodiment of the present invention can improve the compatibility of coils between different systems.

Abstract: A debugging device for a body coil of a magnetic resonance imaging (MRI) system includes a pair of output ports connected to a pair of input ports of the body coil. The debugging device also includes a pair of input ports connected to a pair of output ports of the MRI system. The debugging device includes a pair of extension circuits, separately connected between the pair of input ports and the pair of output ports; and a first adjustment capacitor for reducing or eliminating coupling between the pair of input ports. The first adjustment capacitor is bridged between the pair of input ports, and the capacitance of the first adjustment capacitor is variable.