Koninklijke Philips Corporation N.V.

Other

George Randall Duensing

Arne Reykowski

Timothy Ortiz

Paul Franz Redder

Olli Tapio Friman

Olli Friman

Feng Huang

Charles Saylor

Sascha Krueger

Thomas Erik Amthor

Oliver Lips

Christian Findeklee

Kay Nehrke

Peter Koken

Mariya Ivanova Doneva

Peter Bornert

Rodrigo Calderon Rico

Tracy Allyn Wynn

Christopher Spencer

Ron Kosal

Ryan Law

Bida Zhang

Drew Warren Humphreys

A radio frequency (RF) system comprises an RF-array of antenna elements, a regulating arrangement to tune the antenna elements' impedances and a camera system to acquire image information of the RF-array. An analysis module is provided to derive operational settings such as resonant tuning settings, decoupling and impedance matchings of the antenna elements' impedances from the image information. The image information also represents the actual impedances and resonant properties of the RF-array. From the image information appropriate impedance settings can be derived that are the tuning parameters to render the RF-array resonant.

Adjusting of radiofrequency array using a camera system

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 radio frequency (RF) device for receiving or exciting a magnetic resonance (MR) signal includes an MR coil () tuned to an MR frequency band, a digital signal processing chain () at least partly tuned to operate at baseband, an analog signal processing chain () operatively connected with the MR coil and at least partly tuned to operate at the MR frequency band, and an analog to digital (A/D) or digital-to-analog (D/A) converter () connecting the digital signal processing chain and the analog signal processing chain. The analog signal processing chain includes an analog dispersive delay line () tuned to impose a frequency-dependent signal delay () that is monotonically increasing or monotonically decreasing over the MR frequency band. In more specific embodiments, the RF device may comprise an MR transmit chain (), or an MR receive chain ().

Inverse dispersive filter for dynamic range compression in MR

A dongle includes: a battery configured to provide direct current (DC) power to a device to which the dongle is electrically and mechanically connected. The battery is adapted to be removed and replaced by another battery. A heat sink configured to dissipate heat generated by the battery is adapted to be removed and replaced by another heat sink.

Dongle for magnetic resonance imaging

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

An apparatus includes a takeup spool disposed at a far end of a magnetic resonance imaging bore. The takeup spool is adapted to release optical fiber, and to retract the optical fiber. The apparatus also comprises a dongle configured to connect to a terminal end of the optical fiber.

Apparatus for handling optical fiber in magnetic resonance imaging system

A local magnetic resonance (MR) radio frequency (RF) coil includes a plurality of housing sections that are separable and configured with mating surfaces that meet and engage each other to form an opening which receives a portion of subject anatomy for magnetic resonance imaging, a detachable connector, and a cable. Each housing section includes coil elements enclosed within each housing section which receive MR signals from the received portion of the subject anatomy, and external connectors connected to the coil elements co-located on an outside surface of each housing section and adjacent to the mating surfaces. The detachable connector connects to the external connectors of the housing sections. The cable conveys at least the received MR signals received by the coil elements.

Detachable connector and splittable RF coil housings

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

The invention provides for a magnetic resonance imaging system () for acquiring magnetic resonance data () from a subject () within an imaging zone (). The magnetic resonance imaging system comprises a memory () for storing machine executable instructions (), and pulse sequence commands (), wherein the pulse sequence commands are configured to cause the magnetic imaging resonance system to acquire the magnetic resonance data according to a magnetic resonance fingerprinting technique. The pulse sequence commands are further configured to control the magnetic resonance imaging system to perform spatial encoding using a zero echo time magnetic resonance imaging protocol. Execution of the machine executable instructions causes the processor controlling the MRI system to: acquire () the magnetic resonance data by controlling the magnetic resonance imaging system with the pulse sequence commands; and calculate () a spatial distribution () of each of a set of predetermined substances by comparing the magnetic resonance data with a magnetic resonance fingerprinting dictionary ().

Silent 3D magnetic resonance fingerprinting

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.

Wireless-type RF coil and transmitter for legacy magnetic resonance imaging (MRI) systems and method of operation thereof

A radio-frequency (RF) coil apparatus for magnetic resonance (MR) systems () includes a base () having opposed sides (), a surface () to support an object of interest (OOI) for scanning, and fasteners () situated at the opposed sides, A positioner (A,B,) is configured to be releasably attached to the base and has a body () extending between opposed ends and fasteners (,) situated at the opposed ends of the body, The body is configured to form an arch between the opposed ends. An upper section () has at least one RF coil array () for acquiring induced MR signals, and is configured to be positioned over the positioner.

Adjustable RF coil assembly for magnetic resonance systems and method of operation thereof

A system for controlling a wireless-type radio frequency (RF) coil apparatus () for a magnetic resonance (MR) system including a processor for acquiring emitted radio frequency (RF) signals from a plurality of coils of an RF transducer array including an indication of a local clock signal indicating a time of (RF) signal acquisition; acquiring magnetic field strength information from a plurality of field probes of a magnetic field probe array including an indication of the local clock signal indicating a time of magnetic field strength information acquisition, and forming k-space information based upon the acquired emitted RF signals from the plurality of coils of the RF transducer array and the acquired magnetic field strength information including the indications of the local clock signal.

Wireless-type RF coil apparatus comprising an RF transducer array and a magnetic field probe array

A local magnetic resonance (MR) radio frequency (RF) coil () includes a fixed size coil housing () with an internal opening () which receives a portion of a subject anatomy for imaging. The internal opening () includes a narrowed portion () and a divergent portion () which accommodates variable sizes of subject anatomy. A first size of antenna () is disposed in the housing () adjacent the narrowed portion () of the opening and at least a second size of antenna () larger than the at least first sized antenna () adjacent the divergent portion of the opening.

Growing community of inventors

Gainsville, FL, United States of America

George Randall Duensing