Koninklijke Philips Corporation N.V.

Timothy Ortiz

George Randall Duensing

Arne Reykowski

Paul Franz Redder

Rodrigo Calderon Rico

Olli Tapio Friman

Tracy Allyn Wynn

Aasrith Ganti

Alton Keel

Scott Bradley King

An electronic device () includes an electronic component (); at least one electrically conductive loop or winding () disposed around the electronic component; and an electronic controller () configured to: obtain () a magnetic field direction from a received ambient magnetic field measurement signal; determine () at least one magnetic field shim current based on the obtained magnetic field direction; and energize () the at least one electrically conductive loop or winding to flow the determined at least one magnetic field shim current.

Magnetic field (B) artifact reduction throught active shimming

A method for communicating magnetic resonance imaging (MRI) information wirelessly includes detecting an MRI system emission sequence, and identifying at least one parameter of the sequence. The at least one parameter identified is cross-correlated. A first initial condition for a first chaotic coded sequence and a second initial condition for a second chaotic coded sequence are determined based on the at least one parameter. The method further includes obtaining, from a modulation symbol mapped to MRI information generated at a local coil responsive to the sequence, a real component of the symbol and an imaginary component of the symbol. The real component of the symbol is encrypted based on the first initial condition, and the imaginary component of the symbol is encrypted based on the second initial condition. The encrypted real component and imaginary component of the symbol are wirelessly transmitted.

Chaos coding based communications for MRI coils

A magnetic resonance (MR) receive device comprises a coil or coil array including at least one radiofrequency (RF) coil element wherein each RF coil element comprises a coil and a preamplifier connected to amplify an output of the RF coil element to generate an amplified RF signal. The MR receive device further includes an RF-over-Fiber module comprising an optical fiber, a photonic device optically coupled to send an optical signal into the optical fiber, and an RF modulator connected to modulate the optical signal by an MR signal comprising the amplified RF signal.

Apparatus for non-galvanic connection of MRI receive coil to MRI system using RF-over-fiber

An image acquisition system (). The image acquisition system may include at least one processor (-) configured to control: a transmitter () to form packets for transmission over a high-data-rate (HDR) wireless communication link (HDR-WCL) (), an image acquisition device () to acquire image data and form HDR data, and a scheduler () to acquire control information for controlling at least one function of the image acquisition system during the image acquisition, determine a restricted packet size for the packets of the HDR-WCL in accordance with at least deterministic timing requirements of the system, and determine a schedule for transmitting the control information in a corresponding packet of the packets in accordance with the deterministic timing requirements of the image acquisition system and the restricted packet size.

High data rate and real time operating system wireless coupling for medical imaging systems and method of operation thereof

A magnetic resonance imaging (MRI) system () includes a wireless RF station () which is associated with one or more RF coils which sense the magnetic resonance (MR) signal emitted from a subject under MRI examination. The wireless RF station communicates digital data representing the sensed MR signal to an MRI controller () for further processing, which may include display. An internal clock () in the wireless RF station is precisely synchronized with the MRI controller clock (), with carrier phase synchronization and code phase tracking of a predefined code sequence such as a pseudo random number (PRN) sequence.

Systems and methods for wireless communication for magnetic resonance imaging (MRI) systems

A magnetic resonance (MR) system, including at least one wireless radio-frequency (RF) coil comprising antennas for receiving induced MR signals and an antenna array comprising transmission and reception antennas; a base transmitter system (BTS) having an antenna array comprising a plurality of transmission and reception antennas configured to communicate with the RF coil using a selected spatial diversity (SD) method; and at least one controller to control the BTS and the RF coil to determine a number of transmission and/or reception antennas available, couple the transmission and reception antennas to form corresponding antenna pairings, and determine signal characteristic information (SCI) of the antenna pairings, select an SD transmission method based upon the determined number of antennas and the determined SCI for communication between the BTS and the RF coil, and establish a communication channel between the BTS and the RF coil in accordance with the selected SD transmission method.

Magnetic resonance (MR) system with increased wireless channel throughput and method of operation thereof

A magnetic resonance system includes a wireless power detection sensor and a wireless energy harvesting circuit. The wireless power detection sensor detects magnetic resonance transmissions of the magnetic resonance system. The wireless energy harvesting circuit harvests energy from the magnetic resonance transmissions based on the wireless power detection sensor detecting the magnetic resonance transmissions.

Wireless magnetic resonance energy harvesting and coil detuning

A magnetic resonance (MR) system includes a main magnet having a bore and producing a substantially homogenous magnetic field (B) within a scanning volume. A mobile radio-frequency (RF) coil (MRF) includes at least one transmit antenna for transmitting a location signal within the bore of the magnet. At least one receive antenna os situated substantially at a known location and configured to receive the transmitted location signal. A controller is configured to align the transmit antenna of the MRF with reference to the known location of the receive antenna based upon an analysis of the received location signal.

MRI system with automatic positioning of radio-frequency coil based upon wireless signal and method of operation thereof

A transmission apparatus for legacy magnetic resonance (MR) systems including one or more of a radio transmission portion having coupling to an analog RF cable port of the MR system including at least one first controller, an analog-to-digital converter (A/D), and a transmitter. The first controller controls the A/D to digitize analog magnetic resonance (MR) information received from the RF coil and controls the transmitter to transmit the digitized MR information. A radio reception portion including an analog output port and a coupler for coupling the output port to a legacy cable port input of the legacy system including at least one second controller, a receiver, and a digital-to-analog converter (D/A). The second controller controls the receiver to receive the transmitted digitized MR information, and controls the D/A to perform a digital-to-analog conversion to form a corresponding analog MR signal which is output at the output port.

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Alachua, FL, United States of America

Timothy Ortiz