Abstract: Provided is a binarization method for CT sectional image of fiber package containing artifacts, which includes: performing brightness adjustment on the source image obtained after converting of the HSV image model by using a composite tangent function; creating a planar morphological structural element having a morphology similar to that of a target object to obtain a background image without the target object; obtaining a second intermediate image by a subtraction operation of the first intermediate image and the background image; improving an image contrast of the second intermediate image again to obtain a third intermediate image; and binarizing the third intermediate image by using a local adaptive threshold binarization algorithm and removing a background noise to obtain a final binarized image. The binarization method can improve the uneven brightness of the image under complex illumination, alleviate the artifacts, and strip similar objects from the background with similar gray scales.

Abstract: Ultrasound imaging systems and methods for generated clutter-reduced images are provided. For example, an ultrasound imaging system can include an array of acoustic elements in communication with a processor. The processor is configured to activate the array to perform a scan sequence to obtain a plurality of signals, identify off-axis signals from the plurality of signals by comparing the right subaperture and the left subaperture, and create a clutter-reduced image based on the comparison. Because off-axis signals are more likely to create image clutter, reducing the influence of off-axis signals on the image can therefore improve the quality of the image. Accordingly, embodiments of the present disclosure provide systems, methods, and devices for generating ultrasound images that have reduced or minimized clutter, even for images obtained using arrays that do not satisfy the Nyquist criterion.

Abstract: An enzyme synthesizes hydroxyl acetaldehyde and/or 1,3-dihydroxyacetone by catalyzing formaldehyde. Site-directed mutation of benzoylformate decarboxylase (BFD) creates a mutant of the enzyme, which can polymerize the formaldehyde, A phosphoketalose (F/XPK) generates acetyl phosphoric acid from the hydroxyl acetaldehyde or 1,3-dihydroxyacetone (DHA). Combination with phosphotransacetylase (Pta) provides a route from the formaldehyde to acetyl coenzyme A in three steps.

Abstract: An intravascular ultrasound (IVUS) imaging system includes an IVUS imaging device positionable within a blood vessel. The IVUS imaging device includes a circumferential array of acoustic elements. The system includes a processor circuit. The processor circuit controls the circumferential array to emit ultrasound pulses. The ultrasound pulses include a first pulse emitted by a first subset of the circumferential array and a second pulse emitted by a second subset of the circumferential array. The second pulse occurs immediately after the first pulse. The first subset and the second subset are circumferentially spaced from one another around the circumferential array. The second subset is outside of a line of sight of first ultrasound echoes associated with the first ultrasound pulse. The processor circuit generates an IVUS image based on the ultrasound pulses and outputs the IVUS image to a display.

Abstract: Ultrasound imaging systems and methods for generated clutter-reduced images are provided. For example, an ultrasound imaging system can include an array of acoustic elements in communication with a processor. The processor is configured to activate the array to perform a scan sequence to obtain a plurality of signals, identify off-axis signals from the plurality of signals by comparing the right subaperture and the left subaperture, and create a clutter-reduced image based on the comparison. Because off-axis signals are more likely to create image clutter, reducing the influence of off-axis signals on the image can therefore improve the quality of the image. Accordingly, embodiments of the present disclosure provide systems, methods, and devices for generating ultrasound images that have reduced or minimized clutter, even for images obtained using arrays that do not satisfy the Nyquist criterion.

Abstract: Ultrasound image devices, systems, and methods are provided.

Abstract: Ultrasound imaging systems and methods for generated clutter-reduced images are provided. For example, an ultrasound imaging system can include an array of acoustic elements in communication with a processor. The processor is configured to activate the array to perform a scan sequence to obtain a plurality of signals, identify off-axis signals from the plurality of signals by comparing the right subaperture and the left subaperture, and create a clutter-reduced image based on the comparison. Because off-axis signals are more likely to create image clutter, reducing the influence of off-axis signals on the image can therefore improve the quality of the image. Accordingly, embodiments of the present disclosure provide systems, methods, and devices for generating ultrasound images that have reduced or minimized clutter, even for images obtained using arrays that do not satisfy the Nyquist criterion.

Abstract: Ultrasound imaging systems and methods for generated clutter-reduced images are provided. For example, an ultrasound imaging system can include an array of acoustic elements in communication with a processor. The processor is configured to activate the array to perform a scan sequence to obtain a plurality of signals, identify off-axis signals from the plurality of signals by comparing the right subaperture and the left subaperture, and create a clutter-reduced image based on the comparison. Because off-axis signals are more likely to create image clutter, reducing the influence of off-axis signals on the image can therefore improve the quality of the image. Accordingly, embodiments of the present disclosure provide systems, methods, and devices for generating ultrasound images that have reduced or minimized clutter, even for images obtained using arrays that do not satisfy the Nyquist criterion.

Abstract: An enzyme synthesizes hydroxyl acetaldehyde and/or 1,3-dihydroxyacetone by catalyzing formaldehyde. Site-directed mutation of benzoylformate decarboxylase (BFD) creates a mutant of the enzyme, which can polymerize the formaldehyde, A phosphoketalose (F/XPK) generates acetyl phosphoric acid from the hydroxyl acetaldehyde or 1,3-dihydroxyacetone (DHA). Combination with phosphotransacetylase (Pta) provides a route from the formaldehyde to acetyl coenzyme A in three steps.

Abstract: Shear waves are generated and measured in viscoelastic phantoms by a single push beam. Using numerical simulations or an analytical function to describe the diffraction of the shear wave, the resulting shear wave motion induced by the applied push beam is calculated with different shear elasticity values and then convolved with a separate expression that describes the effects of viscosity value for the medium. The optimization algorithm chooses the tissue parameters which provide the smallest difference between the measured shear waveform and the simulated shear waveform. A shear viscosity image is generated by applying such optimization procedure at all of the observation points.

Abstract: Methods and systems for performing T1 mapping. T1 samples are obtained from an acquisition including one or more inversion groupings. The acquisition may be designed to result in incomplete tissue magnetization recovery between inversion groupings. The acquisition may be designed for the use of non-uniform, non-180° preparatory pulses. The method may also include the combined use of data from different inversion groupings. A model is used in which fit parameters are variable dependent on the inversion grouping.

Abstract: Shear waves are generated and measured in viscoelastic phantoms by a single push beam. Using numerical simulations or an analytical function to describe the diffraction of the shear wave, the resulting shear wave motion induced by the applied push beam is calculated with different shear elasticity values and then convolved with a separate expression that describes the effects of viscosity value for the medium. The optimization algorithm chooses the tissue parameters which provide the smallest difference between the measured shear waveform and the simulated shear waveform. A shear viscosity image is generated by applying such optimization procedure at all of the observation points.

Abstract: Methods and systems for performing T1 mapping. T1 samples are obtained from an acquisition including one or more inversion groupings. The acquisition may be designed to result in incomplete tissue magnetization recovery between inversion groupings. The acquisition may be designed for the use of non-uniform, non-180° preparatory pulses. The method may also include the combined use of data from different inversion groupings. A model is used in which fit parameters are variable dependent on the inversion grouping.

Abstract: A preparation method for molecular recognition sensor by electrodeposition is provided. The preparation method is as following: forming molecularly imprinted polymeric micelles by self-assembly of ionic type photosensitive copolymers; forming a film on the surface of an electrode by electrodepositing the molecularly imprinted polymeric micelles at a constant potential; crosslinking the electrodeposited micellar film via ultraviolet light irradiation; extracting the template molecules from the crosslinked film to obtain electrode modified by the molecularly imprinted polymeric micellar film; and connecting the modified electrode with a sensor device and a computer to construct a molecular recognition sensing system capable of specifically detecting the template molecules.

Abstract: A preparation method for molecular recognition sensor by electrodeposition is provided. The preparation method is as following: forming molecularly imprinted polymeric micelles by self-assembly of ionic type photosensitive copolymers; forming a film on the surface of an electrode by electrodepositing the molecularly imprinted polymeric micelles at a constant potential; crosslinking the electrodeposited micellar film via ultraviolet light irradiation; extracting the template molecules from the crosslinked film to obtain electrode modified by the molecularly imprinted polymeric micellar film; and connecting the modified electrode with a sensor device and a computer to construct a molecular recognition sensing system capable of specifically detecting the template molecules.