Siemens Aktiengesellschaft

Siemens Healthcare Gmbh

Siemens Healthineers Ag

Tong Tong

Wen Ming Li

Jianmin Wang

Markus Vester

Jian Li

Shu Du

Jia Heng Tan

Jian Wang

Zhi Bin Li

Zeng He He

Zhi Guo Sun

Zheng He He

Bing Wu Zhang

An RF coil assembly for an MRI system may include a coil support and an RF coil. The coil support may include a base, a first adjusting arm and a second adjusting arm. The first adjusting arm is rotatably connected to the base and rotatable about a first axis relative to the base. The second adjusting arm is rotatably connected to the first adjusting arm and rotatable about a second axis relative to the first adjusting arm, the second axis being parallel to the first axis. The RF coil is rotatably connected to the second adjusting arm and rotatable about a third axis relative to the second adjusting arm, the third axis being parallel to the first axis. The position and angle of the RF coil can be flexibly adjusted so that the RF coil fits the examination subject more closely, thus helping to increase imaging quality.

MRI system and RF coil assembly thereof

A power supply apparatus for a magnetic resonance apparatus has a power supply terminal module with a power supply unit and a reference voltage pull-down unit, and a load terminal module with a voltage comparator connected to a load power-feed terminal, which compares a nominal voltage and an actual voltage of the load power-feed terminal. A counter begins counting when the actual voltage is lower than the nominal voltage, and keeps its count unchanged when the actual voltage is equal to the nominal voltage, and emits a signal corresponding to the count to a digital-to-analog converter, connected to a phase inverter, which converts the digital signal to a positive analog voltage. A phase inverter is connected to an output voltage reference terminal of the power supply unit, and inverts the phase of the analog voltage to produce a negative analog voltage that compensates voltage drop loss on a cable between the power supply and the load power-feed terminal.

Power supply apparatus and magnetic resonance imaging system

A magnetic resonance (MR) signal receiving apparatus has multiple local coils, capable of separately receiving MR signals generated by a body in an MR examination, each of the local coils having multiple antenna units and a time division multiplexing module. The time division multiplexing module enables MR signals received by the antenna units separately to be provided as an output by just one output line. The apparatus also has a reception coil channel selector having multiple input interfaces connected to the respective output lines of the multiple local coils, and a combiner in the reception coil channel selector that combines in time or power, all or a portion of the MR signals of the local coils, to form one or more MR composite signals.

Magnetic resonance signal receiving apparatus, reception coil channel selector and magnetic resonance imaging system

A decoupling inductor assembly, an RF receiving coil, and an MRI apparatus are provided. The decoupling inductor assembly includes a first inductor and a second inductor. The first inductor includes a first solenoid and a first port pair located at two ends of the first solenoid, and the second inductor includes a second solenoid and a second port pair located at two ends of the second solenoid. The first solenoid and the second solenoid are wound partially or completely overlapped. The first port pair includes at least one pair of first parallel connection interfaces, and the second port pair includes at least one pair of second parallel connection interfaces.

Decoupling inductor assembly, radio frequency receiving coil and magnetic resonance imaging apparatus

A body coil for an MRI system has a conductor management and a tuning/detuning circuit. The tuning/detuning circuit is connected to the conductor management, and used to subject the conductor management to tuning/detuning control by a control signal. The tuning/detuning circuit has a control signal interface, a switch diode unit and an AC/DC conversion circuit. The control signal interface receives the control signal. There is at least one switch diode unit, respectively series-connected on at least one antenna rod and/or at least one end ring of the body coil conductor management. The AC/DC conversion circuit has a rectifying circuit, for converting the power of an input RF emission signal in the MRI system to a DC current, the DC current being used to provide a DC current for the switch diode unit to be turned on. The body coil reduces the cost of a DC power supply, and this reduces heat generated by the diodes.

Body coil and magnetic resonance imaging system

A local coil assembly for an MRI apparatus includes an RF channel setting unit, a basic coil having a first slot, and a first additional coil connected to the first slot. Each of the basic coil and the first additional coil includes one or more receiving channels. The RF channel setting unit is configured for setting a receiving channel of the basic coil and a receiving channel of the first additional coil. The basic coil is configured for receiving an RF signal according to a receiving channel set by the RF channel setting unit. The first additional coil is configured for receiving an RF signal according to a receiving channel set by the RF receiving channel setting unit. The present teachings are compatible with multiple coils, and support the combined use of multiple coils.

Magnetic resonance imaging apparatus and local coil assembly and local coil thereof

A decoupling device includes a first substrate, a first inductive coil printed on the first substrate, a second substrate, a second inductive coil printed on the second substrate, and a joining component. The joining component is for joining the first substrate to the second substrate. The first inductive coil and the second inductive coil have an area of overlap.

Decoupling device, radio frequency coil and magnetic resonance imaging apparatus

A local coil for an MRI system includes a signal antenna to receive a magnetic resonance signal and a tuning/detuning circuit to subject the signal antenna part to switch control according to a control signal. The tuning/detuning circuit is connected to the signal antenna part. The tuning/detuning circuit includes a control signal interface, a resonant circuit and an AC/DC conversion circuit. The control signal interface receives the control signal. The resonant circuit includes a diode. The AC/DC conversion circuit converts an alternating current generated by an electromagnetic wave to a direct current. The AC/DC conversion circuit is connected in series with the diode. A small detuning control current may be used, and detuning control circuitry may be reduced.

Local coil

A local coil of an MRI system includes at least one cascade output slot, at least one cascade input slot, and at least one RF switch. The at least one RF switch includes a first input signal interface, a second input signal interface, and at least one output signal interface. The first input signal interface is connected to the at least one cascade input slot, the second input signal interface is connected to an RF signal interface of the local coil, and the output signal interface is connected to the at least one cascade output slot. The at least one RF switch is configured to output signals received by the first input signal interface and the second input signal interface from the output signal interface separately.

Local coil receiving channel selector for magnetic resonance imaging system

A local coil and a magnetic resonance imaging system are provided. The local coil includes an antenna part, an adjustment part and a transmission part. The antenna part includes a first capacitor connected in series for adjusting a frequency of the antenna part. The adjustment part includes a tuning/detuning diode and is connected in parallel to the first capacitor, and the tuning/detuning diode is used for adjusting tuning and detuning of the antenna part. The transmission part includes a radio-frequency transmission line that connects the antenna part and the adjustment part, and the transmission part provides a phase difference of an odd multiple of 180&#xb0; between the antenna part and the tuning/detuning diode.

Local coil and magnetic resonance imaging system

A shoulder coil for a magnetic resonance system includes a receiving part. The shoulder coil also includes a transmitting part used for coupling a radio-frequency magnetic field of a body coil of the magnetic resonance system.

Shoulder coil and transmitting coil for magnetic resonance system

An adapter includes a control circuit, a control signal interface, a first input signal interface, a second input signal interface, and a first output signal interface. The control signal interface receives a tuning/detuning signal, and the control circuit switches, according to the tuning/detuning signal, the first input signal interface and the second input signal interface to be in conduction with the first output signal interface.

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Shenzhen, China

Tong Tong