Koninklijke Philips Corporation N.v.

Koninklijke Philips Electronics N.v.

Philips Intellectual Property & Standards Gmbh

Bernhard Gleich

Juergen Weizenecker

Jürgen Erwin Rahmer

Juergen Erwin Rahmer

Ingo Schmale

Steffen Weiss

Peter Vernickel

Tim Nielsen

Jurgen Weizenecker

Jürgen Weizenecker

Volkmar Schulz

Jörn Borgert

Michael Grass

Peter Boernert

Johannes Adrianus Overweg

Sascha Krueger

Michael Harald Kuhn

Claas Bontus

Ingmar Graesslin

Arne Ewald

Kai-Michael Luedeke

Richard Moessel

Oliver Lips

Ulrich Wolfgang Katscher

Daniel Wirtz

Dirk Schaefer

Jochen Keupp

Bernd R David

Rudolf Mathias Johannes Nicolaas Lamerichs

Marco Verstege

Nick Flaeschner

Joern Borgert

Nielsen Tim

Jeurgen Weizenecker

Juergen Kanzenbach

Nick Flaschner

A tracking system for tracking a marker device for being attached to a medical device is provided, whereby the marker device includes a sensing unit comprising a magnetic object which may be excited by an external magnetic or electromagnetic excitation field into a mechanical oscillation of the magnetic object, and the tracking system comprises a field generator for generating a predetermined magnetic or electromagnetic excitation field for inducing mechanical oscillations of the magnetic object, a transducer for transducing a magnetic or electromagnetic field generated by the induced mechanical oscillations of the magnetic object into one or more electrical response signals, and a position determination unit for determining the position of the marker device on the basis of the one or more electrical response signals.

Tracking system and marker device to be tracked by the tracking system for a medical procedure

A wireless passive marker device () to be tracked and a respective tracking system () are provided which make use of a sensing unit () comprising a resonator element () with piezoelectric properties and a coil element (), whereby an externally applied excitation field having a particular frequency is applied to act on the sensing unit () and wherein the sensing unit () responds to the externally applied excitation field by the resonator element () performing persisting mechanical oscillations in resonant mode, the persisting mechanical oscillations resulting in a piezoelectric voltage causing the coil element () to generate a magnetic field that may then be detected by the tracking system () and used for determining the position of the marker device () and/or sensing a physical property in the surrounding environment of the marker device ().

Passive wireless coil-based markers and tracking system

A system for receiving signals from a magneto-mechanical oscillator includes a main coil array adapted to receive a response signal of the magneto-mechanical oscillator and to transmit an excitation signal to the magneto-mechanical oscillator, and an additional coil for receiving a signal of the magneto-mechanical oscillator. A localizer is adapted to localize the additional coil and comprises a controller for controlling the main coil array and the additional coil such that a received localization signal is generated, a sensitivity provider for providing sensitivity information, and a processor for determining a position and/or orientation of the additional coil based on the provided sensitivity information and based on the received localization signal. A kit is provided for upgrading a system with a main coil array, by adding one or more additional coils and providing software for locating the one or more additional coils with the use of a pilot tone transmission.

System for receiving signals from a magneto-mechanical oscillator

Disclosed in some embodiments are microdevices, medical devices and a registration apparatuses that allow for tracking of medical device(s) in an ultrasound image while maintaining the quality of the ultrasound image. The microdevice comprises a casing and a magneto mechanical resonator. The magneto mechanical resonator comprises at least two magnetic objects providing a permanent magnetic moment. The magneto mechanical resonator is adapted to transduce an external excitation field into a mechanical movement of the at least two magnetic objects relative to each other such that a changing magnetic response field is generated. A pressure sensor is arranged such that an external ultrasound signal induces an additional movement of the magnetic objects such that the changing magnetic response field is changed in dependency of the external ultrasound signal.

Microdevice and registration apparatus

A mechanism for controlling an electron beam generator of an X-ray tube that switches between a low voltage mode and a high voltage mode. The proposed mechanism, during a transition between the low and high voltage modes, controls a power drawn by the electron beam generator. In particular, during a transition from a low voltage mode to a high voltage mode, the drawn power is reduced and, during a transition from a high voltage mode to a low voltage mode, the drawn power is increased.

Controlling an electron beam generator for a computed tomography scanner

The invention provides an X-ray modulator, for use with an X-ray tube, comprising an enclosed chamber having a window portion and a side portion in gaseous communication with each other. The enclosed chamber comprises a chamber wall, wherein the chamber wall of the window portion is thinner than the chamber wall of the side portion. The X-ray modulator further comprises a pressure modulation device provided in the side portion of the enclosed chamber, which is adapted to modulate the pressure within the enclosed chamber, and an absorption gas within the enclosed chamber for absorbing X-ray radiation.

X-ray modulator

The application describes devices, systems and methods related to an implantable device that is a stent or a heart valve. The implantable device includes a pressure sensor. The implantable device is for being introduced into a subject and for being wirelessly read out by an outside reading system. The pressure sensor comprises a casing with a diffusion blocking layer for maintaining a predetermined pressure within the casing and a magneto-mechanical oscillator with a magnetic object providing a permanent magnetic moment. The magneto-mechanical oscillator transduces an external magnetic or electromagnetic excitation field into a mechanical oscillation of the magnetic object, wherein at least a part of the casing is flexible for allowing to transduce external pressure changes into changes of the mechanical oscillation of the magnetic object.

Implantable device including pressure sensor

The present disclosure relates to a medical imaging method, comprising: receiving () a set of subject parameters descriptive of a subject; in response to inputting () the set of subject parameters into a trained deep neural network, DNN, receiving () from the trained DNN a predicted task; presenting the task to the subject; controlling () an MRI system () for acquiring fMRI data from the subject in response to the predicted task performed by the subject during the acquisition.

fMRI task settings with machine learning

A wireless pressure sensing unit () comprises a membrane () forming an outer wall portion of a cavity and two permanent magnets () inside the cavity. One magnet is coupled to the membrane, and at least one magnet is free to oscillate with a rotational movement. At least one is free to oscillate with a rotational movement. The oscillation takes place at a resonance frequency, which is a function of the sensed pressure, which pressure influences the spacing between the two permanent magnets. This oscillation frequency can be sensed remotely by measuring a magnetic field altered by the oscillation. The wireless pressure sensing unit may be provided on a catheter () or guidewire.

Pressure sensing unit, system and method for remote pressure sensing

A magnetic resonance imaging antenna () comprising one or more coil elements () is disclosed. The magnetic resonance imaging antenna further comprises a radio frequency system () coupled to the one or more coil elements. The magnetic resonance imaging antenna further comprises a gas inlet () configured for receiving a pressurized gas. The magnetic resonance imaging antenna further comprises a gas outlet () configured for venting the pressurized gas. The magnetic resonance imaging antenna further comprises an electrical generator () configured for converting mechanical energy resulting from passing the pressurized gas from the gas inlet to the gas outlet into electricity while in the presence of an external magnetic field. The electrical generator is configured to power the radio frequency system using the electricity.

Pressurized gas powered magnetic resonance imaging data

The invention provides for a medical imaging system () comprising a memory () storing machine executable instructions () and a configured artificial neural network (). The medical imaging system further comprises a processor () configured for controlling the medical imaging system. Execution of the machine executable instructions causes the processor to receive () magnetic resonance imaging data (), wherein the magnetic resonance imaging data is BOLD functional magnetic resonance imaging data descriptive of a time dependent BOLD signal () for each of a set of voxels. Execution of the machine executable instructions further causes the processor to construct () a set of initial signals () by reconstructing the time dependent BOLD signal for each of the set of voxels using the magnetic resonance imaging data. Execution of the machine executable instructions further causes the processor to receive () a set of modified signals () in response to inputting the set of initial signals into the configured artificial neural network. The configured artificial neural network is configured for removing physiological artifacts from the set of initial signals.

Functional magnetic resonance imaging artifact removal by means of an artificial neural network

The invention relates to a marker device and a tracking system for tracking the marker device, wherein the marker device comprises a rotationally oscillatable magnetic object and wherein the rotational oscillation is excitable by an external magnetic field, i.e. a magnetic field which is generated by a magnetic field providing unitthat is located outside of the marker device. The rotational oscillation of the magnetic object induces a current in coils, wherein based on these induced currents the position and optionally also the orientation of the marker device is determined. This wireless kind of tracking can be carried out with relatively small marker devices, which can be placed, for instance, in a guidewire, the marker devices can be read out over a relatively large distance and it is possible to use a single marker device for six degrees of freedom localization.

Tracking system and marker device to be tracked by the tracking system

The invention relates to a passive medical identification deviceto be used for identifying a medical tool such as, for example, a surgical instrument, if the medical tool is equipped with the identification device. The identification device comprises a casing, a magnetic objectarranged within the casing such that it is rotatable out of an equilibrium orientation by an external magnetic torque, and a restoring torque providersuch as, for example, a further magnetic object providing a restoring torque forcing the magnetic object back into the equilibrium orientation. The magnetic objectrotationally oscillates upon excitation by an external magnetic torque, thereby generating a response magnetic signal which is transduced into an induction signal that can provide a fingerprint specific for the respective identification device. Accordingly, the identity of the identification device and hence of the medical tool equipped with the identification device can be determined based on the induction signal.

Identifying system for identifying a medical tool like a surgical instrument

The invention relates to a passive pressure sensor () for being introduced into the circulatory system of a human being and for being wirelessly read out by an outside reading system. The pressure sensor comprises a casing () with a diffusion blocking layer for maintaining a predetermined pressure within the casing and a magneto-mechanical oscillator with a magnetic object () providing a permanent magnetic moment. The magneto-mechanical oscillator transduces an external magnetic or electromagnetic excitation field into a mechanical oscillation of the magnetic object, wherein at least a part of the casing is flexible for allowing to transduce external pressure changes into changes of the mechanical oscillation of the magnetic object. The pressure sensor can be very small and nevertheless provide high quality pressure sensing.

Pressure sensor for being introduced into a circulatory system

The present invention relates to a system and a method for high-voltage switching for a computed tomography apparatus. The system comprises an oscillating circuit with a non-linear inductor and a capacitor. The inductor and the capacitor are connected in series, and the capacitor is connected to a high-voltage line of a high-voltage power supply. The inductor comprises an inductance that decreases with increasing current through the inductor, such that the inductance of the inductor significantly chances during a resonant operation of the oscillating circuit, thereby providing essentially a square voltage applied to the capacitor. The square voltage modulates the high-voltage of the high-voltage generator thus switching high-voltage levels applied to an electrode of a computed tomography system.

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Hamburg, Germany

Bernhard Gleich