Abstract: Network traffic data associated with data requests to computer applications based on static policies is collected. An optimization order is established among network parameters. A first network parameter of a higher rank in the optimization order is estimated based on the collected network traffic data before one or more other network parameters of lower ranks are estimated. Optimal values for the other network parameters are estimated based at least in part on the estimated first optimal value for the first network parameter. The estimated first optimal value of the first network parameter and the estimated optimal values for the other network parameters are propagated to be used by user devices to make new data requests to the computer applications.

Abstract: A magnetic resonance apparatus, for acquiring magnetic resonance data from a person who is asleep, includes a person support apparatus to provide a sleeping place; an acquisition arrangement including a radiofrequency coil arrangement for transmitting excitation pulses and for receiving magnetic resonance signals; and a controller, designed to operate the acquisition arrangement according to a magnetic resonance sequence for acquiring a magnetic resonance dataset from a region under examination of the person. The magnetic resonance apparatus includes a main magnetic field of strength less than 20 mT, in particular less than 10 mT, and the controller includes an acquisition unit for acquiring a magnetic resonance dataset via a prolonged magnetic resonance sequence having a total acquisition duration of more than one hour.

Abstract: An anatomical sensing system-guided prostate procedure device that includes a housing having a proximal end and a distal end. The housing may be divided into a distal housing section, a mid housing section, and a proximal housing section, wherein the distal housing section is configured for insertion into the anus and retention in the rectum of a subject. The device further includes an instrument convergence point disposed between the proximal end and the distal end, the convergence point configured to allow an instrument pass though the instrument convergence point at a variable angle; and an instrument angle orienting system at the proximal end of the housing, the angle orienting system directing an orientation of the variable angle about the convergence point. Methods of the using an anatomical sensing system-guided prostate procedure device and system including the same.

Abstract: A resin-impregnated superconducting coil has axially-extending coil mounting arrangements that include features embedded within the structure of the resin-impregnated superconducting coil, between layers of turns of the coil.

Abstract: A pulse sequence generation computing device for a magnetic resonance imaging (MRI) system includes a processor in communication with a memory device. The processor is programmed to receive a pulse sequence including a plurality of gradient pulses and provide a pulse sequence threshold function corresponding to an acoustic noise reduction level. For each gradient pulse in the pulse sequence, the processor is programmed to determine an amplitude and a slew rate of the gradient pulse, determine a threshold amplitude and slew rate of the gradient pulse, and compare the determined amplitude and slew rate to the threshold amplitude and slew rate. If either the determined amplitude or slew rate exceeds the threshold amplitude or slew rate, the processor adjusts at least one of the amplitude and the slew rate of the gradient pulse to an amplitude and a slew rate as defined by the pulse sequence threshold function.

Abstract: An apparatus (and method) for automated NMR relaxation measurements on borehole materials (e.g., drill cuttings, sidewall cores and whole cores) includes a sample cassette and a sample transfer system operating synchronized with the NMR experiment. The apparatus implements an automatic calibration, adaptive data stacking and automated measurements of the sample volume for irregular shaped samples. The measurements throughput may be increased by creating more than one excitation/detection volume during a measurement cycle. The NMR surface data may be interpreted together with other bulk sensitive measurement data (e.g. natural gamma ray spectroscopy) or/and downhole data to evaluate earth formations while drilling an oil well.

Abstract: A wireless magnetic resonance (MR) signal receiving system comprises a wireless MR coil (20) and a base station (50). The wireless MR coil includes coil elements (22) tuned to receive an MR signal, and electronic modules (24) each including a transceiver (30) and a digital processor (32). Each electronic module is operatively connected to receive an MR signal from at least one coil element. The base station includes a base station transceiver (52) configured to wirelessly communicate with the transceivers of the electronic modules of the wireless MR coil, and a base station digital processor (54). The electronic modules form a configurable mesh network (60) to wirelessly transmit the MR signals received by the electronic modules to the base station. The base station digital processor is programmed to operate the base station transceiver to receive the MR signals wirelessly transmitted to the base station by the configurable mesh network.

Abstract: A multi-planar intraoral radio frequency (RF) coil apparatus for use in a magnetic resonance imaging system can include a housing having a shape configured to be positioned in an occlusal plane between an upper jaw and a lower jaw of a subject and a plurality of coil elements disposed within the housing. The plurality of coil elements includes a first coil element positioned in a first plane and a second coil element positioned in a second plane different from the first plane and substantially parallel to the first plane. The coil elements can be loop coil elements or dipole coil elements.

Abstract: Various examples are provided for wireless power transfer to implants. In one example, a system includes a radio frequency (RF) power source and a transmitter (TX) array comprising an excitation coil and resonant coils distributed about the excitation coil. The TX array can transfer power from the RF power source to a biomedical implant inserted below a skin surface of a subject when the TX array is positioned on the skin surface adjacent to the biomedical implant. A receiver (RX) coil of the biomedical implant can inductively couple with the TX array for the power. The resonant coils can allow power transfer when the RX coil is not aligned with the excitation coil.

Abstract: A magnetic resonance imaging system (100, 300) for acquiring magnetic resonance data (142) from a subject (118) within an imaging zone (108) includes a magnetic resonance imaging antenna (113, 113?) comprising having multiple loop antenna elements (114, 114?) with multiple infrared thermometry sensors (115, 115?). The magnetic resonance imaging antenna is configured for being positioned adjacent to an external surface (119) of the subject and at least a portion of the multiple infrared thermometry sensors are directed towards the external surface. The magnetic resonance imaging system further includes a memory (134, 136) containing machine executable instructions (150, 152) and pulse sequence instructions (140).

Abstract: A device includes a substrate, an electrode, an electrical pad, and a signal line. The signal line is coupled to the substrate and covered by an insulation layer. The signal line is coupled to the electrical pad and the electrode. At least one of the electrode and the signal line includes a diamagnetic material and paramagnetic material, wherein a ratio of the diamagnetic material and the paramagnetic material is selected based on the susceptibility properties of a physiological tissue. The term paramagnetic herein refers to magnetic susceptibility greater than that of the surrounding tissue and diamagnetic refers to magnetic susceptibility lower than that of the tissue.

Abstract: A power transmission apparatus includes a first power transmission coil having a planar shape, and a second power transmission coil having a planar shape, arranged outside the first power transmission coil. The second power transmission coil has an opening with a diameter greater than that of an opening of the first power transmission coil in a direction of a line of intersection on which a plane including a coil plane of the first power transmission coil and a plane including a coil plane of the second power transmission coil intersect with each other. The power transmission apparatus transmits power to a power reception coil without contact.

Abstract: A magnetic resonance imaging (MRI) system includes a set of magnet coils for generating a magnetic field. The set of magnet coils are composed of a superconducting material. The system further includes a mechanical cryocooler in thermal contact with the set of magnet coils and operable to reduce and maintain a temperature of the set of magnet coils below a transition temperature of the superconducting material, and an energy storage device coupled to the set of magnet coils. The energy storage device may be capable of receiving and storing energy dissipated from the set of magnet coils during rapid shutdown of the set of magnet coils. The system may also include a controller coupled to the energy storage device. The controller may be programmed to recharge the set of magnet coils using the energy stored in the energy storage device during the rapid shutdown of the set of magnet coils.

Abstract: Various methods and systems are provided for a flexible, lightweight, and lowcost radio frequency (RF) coil of a magnetic resonance imaging (MRI) system. In one example, a RF coil assembly for an MRI system includes a distributed capacitance loop portion comprising at least three distributed capacitance conductor wires encapsulated and separated by a dielectric material, a coupling electronics portion including a preamplifier, and a coil-interfacing cable extending between the coupling electronics portion and an interfacing connector of the RF coil assembly.

Abstract: A sensor probe with reduced coupling between the various antenna elements and suppression of radio frequency interference. In one embodiment the sensor probe comprises a first antenna and a second antenna. A first and a second decoupling loop is electrically connected to one of the first and second antennas with current flow in opposite directions in the first and second decoupling loops. A third decoupling loop is electrically connected to another one of the first and second antennas and physically disposed between the first and second decoupling loops. Coupling between the first and second antennas is responsive to a location of the third decoupling loop relative to the first and second decoupling loops.

Abstract: Various tray inserts, methods and algorithm for certifying candidate trays for use in an X-ray scanner system are discussed. The tray insert includes at least a body having multiple parts positioned for generation of image quality metrics for tray impact evaluation in; a first cover and a second cover disposed at opposite ends to fix and secure the body. The method including running an algorithm to control an X-ray system to collect baseline image data from certified trays, collecting candidate tray image data, extracting image quality metrics for both the baseline image data and the candidate tray image data, and performing statistical analysis using and comparing image quality metrics from the baseline image data and the candidate tray image data to certify the candidate tray based on the statistical and comparison results.

Abstract: Various embodiments of the present disclosure are directed towards a magnetic resonance imaging (MRI) head coil comprising an open shield. A transmit coil surrounds a phased array receive coil and comprises a resonant birdcage structure. The resonant birdcage structure comprises multiple transmit rungs spaced in a first closed path, and inter-rung spacing at one or more first locations on the first closed path is greater than at a remainder of the first closed path. The open shield surrounds the transmit coil and comprises a non-resonant birdcage structure. The non-resonant birdcage structure comprises multiple shield rungs spaced in a second closed path. The shield rungs are elongated in parallel with the transmit rungs, and inter-rung spacing at one or more second locations on the second closed path is greater than at a remainder of the second closed path. Further, the second location(s) respectively and radially border the first location(s).

Abstract: A gradient coil system suitable for use in an MRI system. The gradient coil system having a gradient body having a bore extending therethrough and at least one frustoconical portion arranged about the bore. A diameter of a first end of the bore is greater than a diameter of a second end of the bore. The gradient coil system also includes a gradient coil assembly arranged about the bore having at least one frustoconical section substantially conforming to the at least one frustoconical portion of the body, the gradient coil assembly generating gradient fields in a Diameter of Spherical Volume (DSV) for medical imaging.

Abstract: A magnetic field generator includes a refrigerating machine, a cold head, a superconductor which is formed in a cylindrical shape, a cold head extension portion which extends from the cold head and is brought into thermal contact with the superconductor at its extended end; and a vacuum heat insulating container having an internal space in which the cold head, the cold head extension portion, and the superconductor are received. The superconductor has a room temperature bore space, which is formed on its inner peripheral side along an axial direction of the superconductor, and is spatially isolated from the internal space of the vacuum heat insulating container. The room temperature bore space has both ends communicating to an outside of the magnetic field generator.

Abstract: According to one embodiment, a medical image processing apparatus includes an acquirer, a first processor and a second processor. The acquirer is configured to acquire nonequispaced sampled data from a test object. The first processor is configured to derive product-sums of the nonequispaced sampled data acquired by the acquirer and a plurality of coefficient sets and generate equispaced sampled data including a plurality of elements with which the product-sums derived for the coefficient sets are associated as element values. The second processor is configured to generate a medical image in which at least part of the test object has been imaged through reconstruction basis on the equispaced sampled data generated by the first processor.

Abstract: A head coil apparatus for MRI of a person's head includes a transmit coil array device generating RF fields for spin state excitation to the head, wherein the transmit coil array device comprises multiple transmit coil loops decoupled from each other and arranged on a transmit coil array carrier surrounding an inner head coil space for receiving the head; a receive coil array device for receiving RF resonance signals from the head; a RF shield surrounding the transmit coil array device and the receive coil array device; and a head coil window providing a viewing port through the RF shield and transmit coil array device. The head coil window has a longitudinal extension and an azimuthal extension, the transmit coil loops includes a window coil loop surrounding the head coil window, and the coil loop is decoupled from a neighbouring transmit coil loop by sharing a common loop conductor.

Abstract: The present invention provides a radio frequency (RF) shield device (124) for a magnetic resonance (MR) examination system (110), whereby the RF shield device (124) comprises a first shield (250) and a second shield (252), the first shield (250) and the second shield (252) are arranged with a common center axis (118), the first shield (250) has a shield structure (254) different from a shield structure (254) of the second shield (252), and the first shield (250) and the second shield (252) are designed in accordance with different modes of operation of a RF coil device (140).

Abstract: Embodiments relate to MRI coils with a reduced number of baluns. One example embodiment is a MRI coil comprising: a plurality of coil elements in one or more groups of coil elements, wherein each group of coil elements comprises at least two coil elements and a shared trace comprising portions of associated traces of each coil element of that group RF shorted together, and wherein, for each coil element of that group, the shared trace of the group is RF shorted to a shield of an associated coaxial cable for that coil element; and one or more baluns, wherein, for each group of coil elements, at least one balun of the one or more baluns is configured to mitigate leakage current on the coaxial cable of each coil element of that group of coil elements.

Abstract: A local coil apparatus for performing a magnetic resonance (MR) scanning on a local part of a subject is provided. The local coil apparatus may include at least one receiving system for receiving the local part. The at least one receiving system may each include an activation member, a receiving member assembly, and a driving mechanism. The receiving member assembly may include one or more receiving members. Each of the one or more receiving members may include a first coil assembly configured to receive MR signals during the MR scanning. The driving mechanism may be physically connected to the one or more receiving members. When the local part is placed on the activation member, the activation member may cause the driving mechanism to drive the receiving member assembly to change from a first configuration to a second configuration to reduce a distance between at least a portion of the first coil assembly and a portion of the local part so that the first coil assembly conforms to the local part.

Abstract: In some aspects, a magnetic system for use in a low-field MRI system. The magnetic system comprises at least one electromagnet configured to, when operated, generate a magnetic field to contribute to a B0 field for the low-field MRI system, and at least one permanent magnet to produce a magnetic field to contribute to the B0 field.

Abstract: A surgical instrument system is disclosed including a surgical instrument, an end effector, and a display. The end effector includes a distal end, a proximal connection portion configured to attach the end effector to the surgical instrument, a first jaw, a second jaw movable relative to the first jaw, and at least one sensor configured to detect an orientation of the second jaw. The second jaw is moveable between an open orientation, a partially-closed orientation, and a closed orientation. The display is configured to incrementally display discrete steps of partial closure of the second jaw.

Abstract: A resonant coil system with improved sensitivity and signal-to-noise performance is described. A primary coil is tuned to a first resonance frequency and inductively coupled to a secondary coil that is separately tuned to a second resonance frequency. The primary and secondary coils form a resonant system with a resonance frequency that is a function of the primary and secondary coil resonance frequencies. The resonance frequency of the coil system is less than both the primary resonance frequency and the secondary resonance frequency. The mutual inductance between the two coils is high and the resonance frequency of the coil system's parallel mode is well separated from that of the anti-parallel mode.

Abstract: Magnetic Resonance Imaging (MRI), which is given the acronym ULTRA (Unlimited Trains of Radio Acquisitions), allows simultaneous MR signal acquisition from the entire object volume in each of a multitude of very small receiver coils arranged in a 3D array around the imaging volume, except for gradient reversals and/or RF pulses for refocusing spins into echoes. This permits a rate of MR signal acquisition that is greatly increased (e.g., 256 times) compared with known existing techniques, with a full 3D image constructed in as little as 1 millisecond. Furthermore, noise—both audible and electrical—is substantially reduced. Clinical imaging can be completed in seconds or less, with good signal-to-noise ratio; signal-to-noise ratio further increases by reducing or eliminating RF noise due to gradient switching; real-time functional MRI can be on millisecond timescales; high quality imaging of thorax and abdomen can be in a single breath hold; ands; and audible noise and vibration are greatly reduced.

Abstract: Improved magnetic resonance imaging systems, methods and software are described including a low field strength main magnet, a gradient coil assembly, an RF coil system, and a control system configured for the acquisition and processing of magnetic resonance imaging data from a patient while utilizing a sparse sampling imaging technique.

Abstract: A method of magnetic resonance tomography includes arranging an object in a static magnetic field, subjecting it to radiofrequency (RF) pulses and magnetic field gradients for creating spatial encoding of magnetic resonance signals, acquiring the signals with at least two RF receive coils, each with a self-resonance frequency and a spatially restricted sensitivity profile, and reconstructing an object image. Spatial encoding of the signals by the gradients and the profiles is utilized, wherein the profile of at least one of the coils is subjected to a temporal sensitivity profile modulation while acquiring the signal. The self-resonance frequency of the at least one coil is set within a predetermined receive bandwidth of a constant resonance frequency value during the modulation. The reconstructing further utilizes the modulation for obtaining additional spatial information to the spatial encoding of the signals by the gradients. Furthermore, an MRI device is described.

Abstract: A magnetic resonance (MR) local coil and a magnetic resonance apparatus are provided. The MR local coil includes a plurality of substrates. At least one conductor loop is arranged on each substrate of the plurality of substrates. The plurality of substrates form a combined virtual surface. The plurality of substrates may be displaced with respect to one another tangentially to the virtual surface.

Abstract: According to one embodiment, a coil element includes an extendable and contractible coil and a capacitor. The capacitor is connected to the coil and has an electrostatic capacity which changes due to a physical change in response to extension or contraction of the coil.

Abstract: Various embodiments of the present disclosure are directed towards a radio frequency (RF) coil comprising a first combination coil and a second combination coil. The first combination coil comprises a first resonant coil and a first resonant shield coupled inductively or by a capacitor, and the first combination coil has a first resonant frequency and a second resonant frequency. The second combination coil comprises a second resonant coil and a second resonant shield coupled inductively or by a capacitor, and the second combination coil has a third resonant frequency and a fourth resonant frequency. The first and second resonant coils are inductively coupled to each other and respectively to the second and first resonant shields. The first and third resonant working frequencies are the same, and the second and fourth resonant isolation frequencies are such that inductive coupling between the first and second resonant coils is negated.

Abstract: The invention relates to a magnetic resonance receive coil including a resonator for use in a magnetic resonance imaging system. The radio frequency receive coil according to the invention comprises a first conducting element of the resonator having a conductive loop wherein the received signal is induced in that loop, configured to form a primary resonant circuit tunable to at least one first resonance frequency and a second conducting element of the resonator configured to form an electric circuit electrically insulated from and reactively coupled to the primary resonant circuit, the electric circuit being adapted to detune the primary resonant circuit to at least one second resonance frequency. The second conducting element of the resonator has a conductive loop with a pair of ends connected to a preamplifier.

Abstract: Provided are batteries and fuel cells incorporating a stripline detector for use in nuclear magnetic resonance (NMR). The stripline batteries and fuel cells can be used for in situ NMR measurement of battery or fuel cell chemistry. Also provided are methods for measuring in situ battery and fuel cell NMR using the stripline batteries and fuel cells of the invention.

Abstract: Apparatus for imaging during surgical procedures includes an operating room for the surgical procedure and an MRI for obtaining images periodically through the surgical procedure by moving the magnet up to the table. The magnet wire is formed of a superconducting material such as magnesium di-boride or Niobium-Titanium which is cooled by a vacuum cryocooling system to superconductivity without use of liquid helium. The magnet weighs less than 1 to 2 tonne and has a floor area in the range 15 to 35 sq feet so that it can be carried on the floor by a support system having an air cushion covering the base area of the magnet having side skirts so as to spread the weight over the entire base area. The magnet remains in the room during surgery and is powered off to turn off the magnetic field when in the second position remote from the table.

Abstract: According to some aspects, a magnetic resonance imaging system capable of imaging a patient is provided. The magnetic resonance imaging system comprising at least one B0 magnet to produce a magnetic field to contribute to a B0 magnetic field for the magnetic resonance imaging system and a member configured to engage with a releasable securing mechanism of a radio frequency coil apparatus, the member attached to the magnetic resonance imaging system at a location so that, when the member is engaged with the releasable securing mechanism of the radio frequency coil apparatus, the radio frequency coil apparatus is secured to the magnetic resonance imaging system substantially within an imaging region of the magnetic resonance imaging system.

Abstract: The present disclosure relates to a radio frequency (RF) functional probe for testing an RF device in a cryogenic environment. The RF functional probe includes a probe head configured to receive the RF device, a flange structure, an isolation structure coupled between the probe head and the flange structure, and an RF cable structure extending from the flange structure, through the isolation structure, and to the probe head. The isolation structure is configured to provide thermal and electrical isolation to reduce radiant heat leak from the RF cable structure to the RF device. Herein, the isolation structure includes multiple baffle structures, each of which includes cable guides. The cable guides of each baffle structure are configured to guide routing paths for the RF cable structure. The RF cable structure is configured to transmit signals to and from the RF device.

Abstract: An example apparatus includes a cover to shield, at least partly, a conductive trace on a surface of a circuit board from electromagnetic interference. The cover includes a conductive surface that faces the conductive trace. The cover at least partly encloses a volume over the conductive trace. The volume is for holding air over the conductive trace. One or more contacts electrically connect the conductive surface of the cover to electrical ground on the circuit board.

Abstract: Various systems are provided for neck radio frequency (RF) coil assemblies for a magnetic resonance imaging (MRI) system. In one example, a neck RF coil assembly includes a central RF coil array including a first plurality of RF coils configured to cover a neck of a subject to be imaged, an upper RF coil array including a second plurality of RF coils extending upward from the central RF coil array and configured to cover a lower head region of the subject, and a lower RF coil array including a third plurality of RF coils extending downward from the central RF coil array and configured to cover an upper shoulder region of the subject, wherein each RF coil of the first, second, and third pluralities of RF coils comprises a loop portion comprising two distributed capacitance wire conductors encapsulated and separated by a dielectric material.

Abstract: A system includes a table and a material detection system. The material detection system includes a transmit chain configured to generate first radio frequency (RF) signals and a transmit probe configured to transmit the first RF signals towards an item through open space. The material detection system also includes a receive probe configured to receive second RF signals from the item through open space, where the second RF signals have one or more characteristics indicative of one or more materials within the item. The material detection system further includes a receive chain configured to process the second RF signals and at least one processing device configured to identify the one or more materials within the item using nuclear quadrupole resonance (NQR) spectrometry based on the processed second RF signals. The transmit and receive probes are positioned in an upper portion of the table.

Abstract: Systems and methods for pre-tuning a main Nuclear Quadrupole Resonance (NQR) probe using a forward sensing probe include a determination of an amount of resonance detuning of the forward sensing probe caused by a moving object entering a field of view of the forward sensing probe. The amount of resonance detuning is used to pre-tune the main probe such that when the moving object enters a field of view of the main probe, the main probe will move back into tune while delivering optimal power to the object for measurement and identification of a material therein.

Abstract: A gradient coil for an MRI apparatus is disclosed, comprising a main coil layer and a shielding coil layer. The shielding coil layer is arranged around the main coil layer, which includes an X, Y, and Z main coil set, and an X and Y end shielding coil set. The X end shielding coil set is connected in series with the X main coil set and used to form a shielding magnetic field in a direction opposite to the X direction. The Y end shielding coil set is connected in series with the Y main coil set and used to form a shielding magnetic field in the opposite direction to the Y direction. In the Z direction, the X end shielding coil set and Y end shielding coil set are disposed outside an imaging region enclosed by the main coil layer.

Abstract: A method, system and article of manufacture is disclosed. The method includes providing a spatial navigator outside of a thermal therapy region; receiving a plurality of analog-to-digital conversion (ADC) readouts from an MRI device at a plurality of time points, wherein the ADC readouts comprise a first ADC readout acquired at a first time point, and one or more additional ADC readouts acquired at subsequent time points; processing the ADC readouts to obtain a frequency of the spatial navigator at each of the time points; obtaining a main magnetic field (B0) drift of the MRI device based on the frequency of the spatial navigator at a particular time point and the frequency of the spatial navigator at the first time point; and obtaining the temperature change at the particular time point based on the B0 drift.

Abstract: A coil facility for a magnetic resonance installation and a magnetic resonance installation having such a coil facility are provided. The coil facility in this case includes a double-resonant transmit resonator for two frequencies and a first receiver and a second receiver, each for one of the two frequencies. The coil facility has an actuator system for effecting a relative spatial transposition of the transmit resonator, the first receiver, and the second receiver into various settings. In a first setting, only the first receiver, and in a second setting, only the second receiver, for receiving corresponding MR signals is arranged in an examination space that is at least sectionally surrounded by the transmit resonator.

Abstract: An MRI apparatus according to an embodiment includes a whole body RF coil accommodated in a gantry. The whole body RF coil includes a first element unit used for transmission of a radio frequency magnetic field; and a second element unit used for reception of a magnetic resonance signal produced from a subject having been applied with the radio frequency magnetic field. The first element unit is a birdcage-type RF coil having two end rings and a plurality of rungs spaced apart from each other along the circumferential direction of the end rings. The second element unit is a microstrip antenna.

Abstract: Some radio-frequency coils comprise three or more electrical conductors that form a radio-frequency coil element. Each of the three or more electrical conductors extends along at least a respective part of a length of the radio-frequency coil element, and, along the length of the radio-frequency coil element, the three or more electrical conductors are separated from each other by respective distances and by one or more dielectric materials.

Abstract: In one embodiment, an MRI apparatus includes: an RF coil configured to receive a magnetic resonance signal from an object and include a first wireless antenna with horizontal polarization; a main body provided with a bore and configured to apply an RF pulse to an object, the bore being a space in which the object is placed during imaging; and at least one second wireless antenna configured to perform wireless communication between the RF coil and the main body via the first wireless antenna, one of the at least one second wireless antenna being disposed at an uppermost portion in an outer periphery of an opening edge of the bore.

Abstract: An embodiment in accordance with the present invention provides an improved electrically conductive transmission line that is radio frequency (RF) safe. The present invention does not include any inductive coupling elements. Instead, multiple coils constructed from twisted pairs of wires are used to block the common mode of the received magnetic resonance (MR) signal that can cause heating, while passing the differential mode that is used for tracking and/or imaging. These twisted pair coils are easily manufactured out of a single length of twisted pair wire, but multiple segments could also be used. The twisted pair coils of the present invention are easier to manufacture than the pre-existing inductive coupling element-based transmission lines, and occupy less overall volume inside a medical device. The individual coils of twisted pairs are tuned to the resonant frequency of the MR scanner by the addition of appropriate capacitors.

Abstract: A stimulation system for a patient is provided. The system comprises: at least one implantable device comprising at least one implantable antenna; and an external device comprising at least one external antenna, wherein the at least one external antenna transfers power to the at least one implantable antenna. The at least one implantable device delivers therapy to the patient. A patient attachment device or body covering positions the at least one external antenna relative to the patient.