Abstract: The embodiments of the present disclosure provide a method for a flow velocity detection. The method may include obtaining image data; determining, based on the image data, a parameter of at least one detection point, the parameter being related to a phase change; and determining a first flow velocity of the at least one detection point based on the parameter related to the phase change and a location relationship among the at least one detection point, at least one transmission point, and a plurality of receiving points.

Abstract: An ultrasonic system includes an ultrasonic probe and a data processing unit which is physically separate from the ultrasonic probe, runs on an operating system and has a receiving memory and a transmission memory. A real-time bus system is for data coupling of the ultrasonic probe to the memories. A probe system manages data within the ultrasonic probe, the clock inaccuracy of the probe system is at least three orders of magnitude less than the clock inaccuracy of the real-time bus system. The response time of the operating system is at least two orders of magnitude longer than the clock inaccuracy of the real-time bus system. The real-time bus system is configured to transfer transmission data and received data simultaneously by uninterrupted streaming clocked with an on average constant rate during stateless operation of the ultrasonic probe, the operation not differentiating between transmission and receiving operation.

Abstract: The present disclosure discloses an ultrasonic imaging method. The ultrasonic imaging method may include: obtaining emitting instructions for emitting a plurality of ultrasonic waves, gaining instructions, receiving instructions, and idle instructions relating to the plurality of ultrasonic waves, and storing the emitting instructions, the receiving instructions, the gaining instructions, and the idle instructions in a ring buffer; obtaining the emitting instructions from the ring buffer, and emitting the plurality of ultrasonic waves based on the emitting instructions; obtaining a gaining instruction and a receiving instruction corresponding to each emission of the plurality of ultrasonic waves from the ring buffer, and obtaining at least one enhanced echo signal based on the gaining instructions and the receiving instructions; and obtaining the idle instructions from the ring buffer, and processing the at least one enhanced echo signal based on the idle instructions to obtain a target ultrasonic image.

Abstract: The present disclosure directs to a system and method for ultrasound imaging. The method may include obtaining a total count of detecting members of a detector of an ultrasound scanner and a directivity angle of each detecting member of the detector. The method may also include obtaining one or more focuses each of which corresponds to a transmission of ultrasound waves of the ultrasound scanner, wherein the one or more focuses are located within the detector. The method may further include determining a synthetic aperture for each of one or more transmissions corresponding to the one or more focuses based on the total count of the detecting members of the detector, the directivity angle of each detecting member of the detector, and the one or more focuses, the synthetic aperture including at least one detecting member of the detector.

Abstract: An ultrasonic apparatus for medical examination using ultrasonic waves, comprising a movable transducer probe which includes a transducer array of electroacoustic transducers for transmitting ultrasonic signals into a patient body and receiving as analog raw data ultrasonic echoes; the transducer probe configured to generate digital raw data based on the received analog raw data which comprises measurement data sets for temporally consecutive measurement time intervals, and is configured to transmit the digital raw data via a digital data interface; a computer device configured to buffer the respective measurement data sets of the digital raw data and is configured to carry out a digital beamforming for each of the buffered measurement data sets, to obtain a reconstructed image of the tissue sector, and generate, based on the reconstructed images, an image stream with a predetermined image refresh rate and supply it to a display means which reproduces the image stream.

Abstract: An examination system including a magnetic resonance scanner having a solenoid for generating a magnetic field, the solenoid surrounding an examination chamber is provided. In addition, a first X-ray source and a first X-ray detector are provided in the examination chamber.

Abstract: A system and method for supplying an energy grid with energy from an intermittent renewable energy source having a production unit for producing Hydrogen, Nitrogen, and Oxygen. The production unit is operated by using energy provided by the renewable energy source. An Oxygen storage receives and stores Oxygen produced by the production unit, a mixing unit receives and mixes the Hydrogen and the Nitrogen produced by the production unit to form a Hydrogen-Nitrogen-mixture, an Ammonia source receives and processes the Hydrogen-Nitrogen-mixture for generating a gas mixture containing Ammonia, an Ammonia power generator generates energy for the energy grid. The Ammonia power generator is fluidly connected to the Ammonia storage vessel, is configured to combust the received Ammonia in a combustion chamber to generate the energy, and is fluidly connected to the Oxygen storage to introduce Oxygen into the combustion chamber for combustion of Ammonia.

Abstract: An examination system including a magnetic resonance scanner having a solenoid for generating a magnetic field, the solenoid surrounding an examination chamber is provided. In addition, a first X-ray source and a first X-ray detector are provided in the examination chamber.

Abstract: A superconducting magnetic arrangement includes a magnetic coil unit. The magnetic coil unit includes a number of superconducting magnetic coils and a cryostat with an insulating vessel for cooling the magnetic coil unit. The magnetic coil unit is arranged in a vacuum in the insulating vessel. The magnetic coil unit is held in the interior of the insulating vessel by a maximum of six longitudinal bearing elements that each extend between the magnetic coil unit and the insulating vessel such that a rotary movement and a translatory movement of the magnetic coil unit relative to the insulating vessel is restrained by the bearing elements.

Abstract: A transmitter device for a magnetic resonance scanner includes a transmitter that is arranged in spatial proximity of a transmission coil that is connected thereto. The transmitter is embodied as a high-frequency power source that is connected directly to the transmission coil.

Abstract: A system and method for supplying an energy grid with energy from an intermittent renewable energy source having a production unit for producing Hydrogen and Nitrogen, a mixing unit configured to receive and mix the Hydrogen and the Nitrogen produced by the production unit, an Ammonia source for receiving and processing the Hydrogen-Nitrogen-mixture, an Ammonia power generator for generating energy for the energy grid, a heat distribution system with one or more heat exchangers, and an Ammonia cracker, which is fluidly connected to the Ammonia storage vessel and to the Ammonia power generator, and which is configured and arranged to receive Ammonia from the Ammonia storage vessel, to effect a partial cracking of the received Ammonia to form an Ammonia-Hydrogen-mixture and to direct the Ammonia-Hydrogen-mixture to the Ammonia power generator for combustion.

Abstract: The invention relates to an electron gun for generating a flat electron beam, comprising a cathode with an emission surface which is curved about a central axis and which is designed to emit electrons. The electron gun further comprises an accelerating device for accelerating the electrons in a radial direction towards a target region on the central axis. Furthermore, the emission surface has a width in the azimuth direction and a height oriented perpendicularly to the width, said width being at least ten times greater than the height.

Abstract: A system and method for load balancing of intermittent renewable energy for an electricity grid includes a production unit for producing Hydrogen and Nitrogen, a mixing unit to receive and mix the Hydrogen and the Nitrogen, an Ammonia source for receiving and processing the Hydrogen-Nitrogen mixture, an Ammonia power generator for generating energy for the energy grid, a Hydrogen injection system for extracting a Hydrogen portion from a stage of the system and for adding extracted Hydrogen to the gas stream to be provided to the Ammonia power generator, and a Hydrogen control system for controlling a flow rate of Hydrogen from the Hydrogen injection system to the gas stream to be provided to the Ammonia power generator, the flow rate determined in accordance with a data set which contains information about actual working conditions of the Ammonia power generator and which is received by the Hydrogen control system.

Abstract: Example minimalist magnetic resonance imaging (MRI) radio frequency (RF) coils that are connected to off coil circuitry by capacitive coupling plates are described. A minimalist MRI RF coil may have some elements that form a traditional coil located off the coil in off coil circuitry. An MR procedure may involve a number of minimalist MRI RF coils that are moved through an excitation zone as a patient is moved through the excitation zone. Example minimalist MRI RF coils may be selectively connected to off coil circuitry while the coils are in the excitation zone. The coupling may be made by capacitive coupling plates. Unlike conventional systems, example systems have capacitive coupling plates with properties that facilitate maintaining a constant capacitance between a coupling plate associated with the coil and coupling plates associated with the off coil circuitry as the coupling plates move relative to each other.

Abstract: A system and method for supplying an energy grid with energy from an intermittent renewable energy source having a production unit for producing Hydrogen and Nitrogen, a mixing unit configured to receive and mix the Hydrogen and the Nitrogen produced by the production unit, an Ammonia source for receiving and processing the Hydrogen-Nitrogen-mixture, an Ammonia power generator for generating energy for the energy grid, a heat distribution system with one or more heat exchangers, and an Ammonia cracker, which is fluidly connected to the Ammonia storage vessel and to the Ammonia power generator, and which is configured and arranged to receive Ammonia from the Ammonia storage vessel, to effect a partial cracking of the received Ammonia to form an Ammonia-Hydrogen-mixture and to direct the Ammonia-Hydrogen-mixture to the Ammonia power generator for combustion.

Abstract: An apparatus is provided for generating X-ray radiation in an outer magnetic field, which may be generated by a magnetic field device. The apparatus includes a cathode configured to generate an electron beam and an anode configured to retard the electrons of the electron beam and generate an X-ray beam. The apparatus further includes a device configured to generate an electric field orientated from the anode in the direction of the cathode and substantially collinear to the outer magnetic field, wherein the cathode, as an electron emitter, includes a cold cathode that passively provides free electrons by field emission.

Abstract: A device for the production of an electron beam with high surface strengths. The device has a cathode component with a convex cathode face with a predetermined radius for extracting the electron beam in such an alignment that a magnetic field or the magnetic field lines thereof, for causing the extraction of the electron beam, is almost collinearly to the convex cathode face.

Abstract: A metal jet x-ray tube is proposed, that is affected less than conventional tubes by the problem of the power density at the point of incidence of the electron beam on the anode component. To this end, the metal jet x-ray tube provides a metal jet as an anode component that is so thin that this metal jet only partly decelerates an electron beam incident thereon. Moreover, the metal jet of the anode component is at least embedded or dissolved in a single second material that passes electrons relatively well and is heat absorbing.

Abstract: A superconducting magnetic arrangement includes a magnetic coil unit. The magnetic coil unit includes a number of superconducting magnetic coils and a cryostat with an insulating vessel for cooling the magnetic coil unit. The magnetic coil unit is arranged in a vacuum in the insulating vessel. The magnetic coil unit is held in the interior of the insulating vessel by a maximum of six longitudinal bearing elements that each extend between the magnetic coil unit and the insulating vessel such that a rotary movement and a translatory movement of the magnetic coil unit relative to the insulating vessel is restrained by the bearing elements.

Abstract: An apparatus is provided for generating X-ray radiation in an outer magnetic field, which may be generated by a magnetic field device. The apparatus includes a cathode configured to generate an electron beam and an anode configured to retard the electrons of the electron beam and generate an X-ray beam. The apparatus further includes a device configured to generate an electric field orientated from the anode in the direction of the cathode and substantially collinear to the outer magnetic field, wherein the cathode, as an electron emitter, includes a cold cathode that passively provides free electrons by field emission.