摘要:
Systems, methods, and devices for image clarity of ultrasound-based images are described wherein motion sections are compensated with the still sections of the region of interest. Velocity map analysis of regions-of-interest is determined to compensate for instrument motion from motions attributable to structures within the region of interest. Methods include image processing algorithms applied to collected echogenic data sets and the dispensers that use apply air-expunged sonic coupling mediums.
摘要:
Systems, methods, and devices for image clarity of ultrasound-based images are described wherein motion sections are compensated with the still sections of the region of interest. Velocity map analysis of regions-of-interest is determined to compensate for instrument motion from motions attributable to structures within the region of interest. Methods include image processing algorithms applied to collected echogenic data sets and the dispensers that use apply air-expunged sonic coupling mediums.
摘要:
A hand-held 3D ultrasound instrument is disclosed which is used to non-invasively and automatically measure amniotic fluid volume in the uterus requiring a minimum of operator intervention. Using a 2D image-processing algorithm, the instrument gives automatic feedback to the user about where to acquire the 3D image set. The user acquires one or more 3D data sets covering all of the amniotic fluid in the uterus and this data is then processed using an optimized 3D algorithm to output the total amniotic fluid volume corrected for any fetal head brain volume contributions.
摘要:
A system includes at least one transducer configured to transmit at least one ultrasound pulse into a region of interest (ROI) of a patient. The pulse has at least a first frequency and propagates through a bodily structure in the ROI. The system further includes at least one receiver configured to receive at least one echo signal corresponding to the pulse. The echo signal includes the first frequency and at least one harmonic multiple of the first frequency. The system further includes a processor configured to automatically determine, from the at least one harmonic multiple, at least one boundary of the bodily structure. In an embodiment, the processor is configured to automatically determine, from the at least one harmonic multiple, an amount of fluid within the bodily structure.
摘要:
A modularized ultrasound apparatus utilizes a PC system such as PC case, thermal management subsystem, power supply unit, motherboard, CPU, memory, hard drive, GPU, to build an ultrasound system by inserting frontend modules integrated on PCIe expansion cards as modularized components into the PC system's PCIe expansion subsystem.
摘要:
The use of power-efficient transmitters to establish acoustic wave energy having low undesirable harmonics is achieved by adjusting the transmitter output waveform to minimize the undesirable harmonics. In one embodiment, both the timing and slope of the waveform edges are adjusted to produce the desired output waveform having little or no second harmonics. In the embodiment, output waveform timing adjustments on the order of fractions of the system clock interval are provided. This then allows for very fine control of a coarsely produced waveform. In one embodiment, the user can select the fine tuning to match the transmitter output signal to a particular load transducer.
摘要:
A non-oriented electrical steel sheet with fine magnetic performance, and a calcium treatment method therefor, including an RH (Ruhrstahl-Heraeus) refinement step. The RH refinement step sequentially comprises a decarbonization step, an aluminum deoxidation step, and a step of adding calcium alloy. In the step of adding calcium alloy, time when the calcium alloy is added satisfies the following condition: time interval between Al and Ca/total time after ΣAl=0.2-0.8. In this method, production cost is reduced, the production process is simple, a normal processing cycle of RH refinement is not affected, the device is convenient in operation and is controllable, and foreign substances are controllable in both shape and quantities. The non-oriented electrical steel sheet prepared according to the present invention has fine magnetic performance, and the method can be used for mass production of the non-oriented electrical steel sheet with fine magnetic performance.
摘要:
A system for expanding color gamut includes: a signal input unit configured to input color information of pixels; a forward transform unit configured to transform the color information of pixels to L, a and b values in a linear Lab color space; a color gamut expansion unit configured to receive a color gamut expansion coefficient, expands L, a and b values provided by the forward transform unit to new L, a and b values in the linear Lab color space according to the color gamut expansion coefficients; a reverse transform unit configured to transform the expanded L, a and b values to color information of pixels in a large color gamut; and a signal output unit configured to output the color information of pixels in the large color gamut. A corresponding method for expanding color gamut is provided.
摘要:
The present invention provides a light source device for projection display, comprising a light source to be supplemented and a laser light source. The laser emitted from the laser light source and the light emitted from the light source to be supplemented are mixed and then output in a same direction.
摘要:
A modularized ultrasound apparatus utilizes a PC system such as PC case, thermal management subsystem, power supply unit, motherboard, CPU, memory, hard drive, GPU, to build an ultrasound system by inserting frontend modules integrated on PCIe expansion cards as modularized components into the PC system's PCIe expansion subsystem.