Abstract: A method for detecting the motion of object by ultra-wideband radar imaging and system thereof to be used to present the motion of object in a reference gray-level image by using the delay time to analyze the distance between the detected position of object and the detecting position to compare the time-varying distance variation between the reference distance and the detecting distance. The system includes a transmitter module, a receiver module and a signal processing module. The transmitter module is used to transmit a first ultra-wideband signal from a detecting position to the object. The receiver module is used to receive a second ultra-wideband signal reflected from the object in the detecting position. The signal processing module is used to analyze the signal delay time of the second ultra-wideband signal received in the detecting position to analyze the detecting distance between the second ultra-wideband signal and the detecting position.

Abstract: An ultrasonic imaging system for generating an ultrasonic image of a motion status of an object according to at least an ultrasonic motion signal generated by detecting the motion of the object is provided. The ultrasonic imaging system includes a demodulation module, an analog sub-array beamformer, a filter, an analog-to-digital converter and an image processing module. The demodulation module receives and demodulates the ultrasonic motion signal so as to generate and send at least a demodulated signal. The analog sub-array beamformer receives the demodulated signal, generates and sends an analog sub-array beam signal according to the demodulated signal. The filter receives and filtering the analog sub-array beam signal. The analog-to-digital converter converts the analog sub-array beam signal filtered by the filter into a digital sub-array beam signal. The image processing module receives the digital sub-array beam signal so as to generate an ultrasonic image of the motion of the object.

Abstract: An exemplary ultrasonic diagnostic system includes a portable ultrasonic diagnostic apparatus and a cloud computing system. The portable ultrasonic diagnostic apparatus includes an ultrasonic sensing unit, a front-end circuit, a data compression unit and a communication unit. The ultrasonic sensing unit is configured to sense a signal reflected from a measured object. The front-end circuit is configured to perform a pre-processing on an output of the ultrasonic sensing unit. The data compression unit is configured to receive an output of the front-end circuit and determine whether to perform a data compression process on the output of the front-end circuit according to a selected result. The communication unit is configured to receive an output of the data compression unit and further transmit the output of the data compression unit to the cloud computing system.

Abstract: A contrast improvement method and system for photoacoustic imaging decomposes a photoacoustic image into a plurality of subband images using a set of filters, and integrates the subband images to form an integrated image. The subband images may be pseudo colored and weighted to improve contrast of the photoacoustic image.

Abstract: An ultrasonic scanhead including an encoder, a pivot, a voice coil motor, and a transducer is provided. The encoder includes a fixed element and a rotary element. The rotary element is disposed at the fixed element and capable of rotating about a first axis. The pivot is through the encoder and capable of rotating with the rotary element. The pivot extends along a second axis and has a first end and a second end opposite to the first end. The voice coil motor includes a stator and a mover. The first end of the pivot is connected to the mover. The mover is capable of moving linearly along a third axis. The first axis, the second axis, and the third axis are substantially perpendicular to each other. The transducer is disposed at the second end of the pivot and capable of emitting an ultrasonic wave.

Abstract: An exemplary automatic ultrasonic scanning system and a scanning method of the same are disclosed. The automatic ultrasonic scanning system includes a multi-axis robot arm, an ultrasonic scan head disposed on the multi-axis robot arm, a control circuit for controlling the multi-axis robot arm, a three-dimensional image capturing apparatus and a computer. The computer senses a tested object through the three-dimensional image capturing apparatus, creates a three-dimensional shape of the tested object, and plans a three-dimensional scanning path according to the three-dimensional shape. According to the three-dimensional scanning path the computer further controls the multi-axis robot arm to perform a multi-axis motion through the control circuit, so as performs a three-dimensional scan on the tested object through the ultrasonic scan head, and constructs an ultrasonic image according to a reflected ultrasonic signal received by the ultrasonic scan head consequently.

Abstract: An imaging probe is suitable to be inserted into a tubular object so as to detect an interior image of the tubular object. The imaging probe includes a light source excitation assembly, an ultrasonic transducer and a receiver. The light source excitation assembly includes a pulsed laser, a first optical fiber and a cone-shaped reflecting member. The pulsed laser is suitable to generate a pulsed light energy. The cone-shaped reflecting member is suitable to reflect the pulsed light energy to let the pulsed light energy annularly irradiate the inner wall of the tubular object so as to produce a photoacoustic signal. The ultrasonic transducer is suitable to generate an ultrasonic signal. The ultrasonic signal annularly irradiates the inner wall of the tubular object so as to produce an ultrasonic echo signal. The receiver receives the photoacoustic signal and the ultrasonic echo signal.

Abstract: A signal processing method is adapted for dealing with a plurality of vector matrixes to detect the image of a predetermined range, and the vector matrix data are generated by reflecting a plurality of ultrasonic beams in the predetermined range. The signal processing method of the present invention is that summing all vector matrix data in a predetermined time interval so as to generate a total correlation matrix. In addition, obtaining a correlation matrix through the total vector matrix multiplied by a transposed total vector matrix, and obtaining a weight value according to inversion correlation matrix. Then, a weighting operation is performed for the vector matrix data in the predetermined time interval according to the weight value, so as to obtain a weighting operation result for performing an image synthesis procedure.

Abstract: A photoacoustic imaging system comprising a coded laser emitting apparatus and a photoacoustic signal receiving apparatus is provided. The coded laser emitting apparatus comprises an encoding unit, a signal generating unit and a laser light source. The encoding unit is used for generating a coded signal. The signal generating unit is used for generating a modulated signal according to the coded signal. The laser light source is used for generating a laser pulse having a specific coded waveform according to the modulated signal. The photoacoustic signal receiving apparatus comprises a photoacoustic signal receiving unit and a decoding unit. The photoacoustic signal receiving unit is used for receiving a photoacoustic signal generated by an object having received the laser pulse and converts the photoacoustic signal into an electrical signal.

Abstract: A medical imaging system and a medical imaging method thereof are provided. The medical imaging method includes the following steps: acquiring an ultrasound image and a photoacoustic image; and overlapping the ultrasound image and the photoacoustic image to generate an overlapped image.

Abstract: A wireless power transmission system includes a wireless power transmitting apparatus and a wireless power receiving apparatus. The wireless power transmitting apparatus includes a signal generator and an ultrasonic transmitting unit. The ultrasonic transmitting unit generates and outputs a focused ultrasonic wave according to a signal outputted from the signal generator. The wireless power receiving apparatus includes an ultrasonic receiving unit and a power conversion unit. The ultrasonic receiving unit receives the focused ultrasonic wave outputted from the wireless power transmitting apparatus and converts the focused ultrasonic wave into electrical power energy. The power conversion unit performs a power conversion on the electrical power energy and thereby provides the converted electrical power energy to a back-end circuit.

Abstract: An exemplary ultrasonic diagnostic system includes a portable ultrasonic diagnostic apparatus and a cloud computing system. The portable ultrasonic diagnostic apparatus includes an ultrasonic sensing unit, a front-end circuit, a data compression unit and a communication unit. The ultrasonic sensing unit is configured to sense a signal reflected from a measured object. The front-end circuit is configured to perform a pre-processing on an output of the ultrasonic sensing unit. The data compression unit is configured to receive an output of the front-end circuit and determine whether to perform a data compression process on the output of the front-end circuit according to a selected result. The communication unit is configured to receive an output of the data compression unit and further transmit the output of the data compression unit to the cloud computing system.

Abstract: An imaging probe is suitable to be inserted into a tubular object so as to detect an interior image of the tubular object. The imaging probe includes a light source excitation assembly, an ultrasonic transducer and a receiver. The light source excitation assembly includes a pulsed laser, a first optical fiber and a cone-shaped reflecting member. The pulsed laser is suitable to generate a pulsed light energy. The cone-shaped reflecting member is suitable to reflect the pulsed light energy to let the pulsed light energy annularly irradiate the inner wall of the tubular object so as to produce a photoacoustic signal. The ultrasonic transducer is suitable to generate an ultrasonic signal. The ultrasonic signal annularly irradiates the inner wall of the tubular object so as to produce an ultrasonic echo signal. The receiver receives the photoacoustic signal and the ultrasonic echo signal.

Abstract: An exemplary ultrasonic image processing system includes an ultrasonic transmitting apparatus, an ultrasonic receiving apparatus, a front-end processing circuit and a computer. The front-end processing circuit is electrically coupled to an ultrasonic probe through the ultrasonic transmitting apparatus and the ultrasonic receiving apparatus respectively. The computer is electrically coupled to the front-end processing circuit. The computer includes a central processing unit (CPU) and a graphics processing unit (GPU). The system employs the CPU to control the operations of the ultrasonic transmitting apparatus and the ultrasonic receiving apparatus through the front-end processing circuit, so as to acquire ultrasound scanning data. The system further employs the GPU to perform an image reconstruction process on the acquired ultrasound scanning data by way of multi-thread process, so as to generate an image display data. Moreover, a corresponding ultrasonic image processing method is also disclosed.

Abstract: A contrast improvement method and system for photoacoustic imaging decomposes a photoacoustic image into a plurality of subband images using a set of filters, and integrates the subband images to form an integrated image. The subband images may be pseudo colored and weighted to improve contrast of the photoacoustic image.

Abstract: A probe composite for photoacoustic imaging includes a first probe and the second probe mixed with each other. The first probe includes a first ligand and a first nanorod conjugated to the first ligand. The first ligand specifically interacts with a first target. The second probe includes a second ligand and a second nanorod conjugated to the second ligand. The second ligand specifically interacts with a second target.

Abstract: An ultrasonic scanhead including an encoder, a pivot, a voice coil motor, and a transducer is provided. The encoder includes a fixed element and a rotary element. The rotary element is disposed at the fixed element and capable of rotating about a first axis. The pivot is through the encoder and capable of rotating with the rotary element. The pivot extends along a second axis and has a first end and a second end opposite to the first end. The voice coil motor includes a stator and a mover. The first end of the pivot is connected to the mover. The mover is capable of moving linearly along a third axis. The first axis, the second axis, and the third axis are substantially perpendicular to each other. The transducer is disposed at the second end of the pivot and capable of emitting an ultrasonic wave.

Abstract: Ultrasound imaging adapts as a function of a coherence factor. Various beamforming, image forming or image processing parameters are varied as a function of a coherence factor to improve detail resolution, contrast resolution, dynamic range or SNR. For example, a beamforming parameter such as the transmit or receive aperture size, apodization type or delay is selected to provide maximum coherence. Alternatively or additionally, an image forming parameter, such as the number of beams for coherent synthesis or incoherent compounding, is set as a function of the coherence factor. Alternatively or additionally an image processing parameter such as the dynamic range, linear or nonlinear video filter and/or linear or nonlinear map may also adapt as a function of the coherence factor.

Abstract: A dynamic focusing apparatus and method for ultrasonic imaging, using transducer frequency encoding technique to map different positions of the surface of a transducer to different frequency responses. To a particular focal position, the time delay required for focusing from various positions on the transducer surface to the focal point can be calculated. By combining frequency responses and time delays that correspond to different transducer positions, a single transmit waveform can be used to drive the transducer and to realize focusing similar to that of an array imaging system. Similar principles can be applied to dynamic focusing at the receive end. A filter can be used to select particular positions on a transducer surface. The received signal extracted in this manner can also be time delayed for focusing. By combining all filters that correspond to different transducer positions, dynamic receive focusing can be implemented using a single position dependent filter.

Abstract: An ultrasound imaging apparatus and method comprises a transducer array, a positioning device for the array, a reflector, a multiplexer, a transmitter/receiver, an image reconstruction and signal processing apparatus, and a monitor. The transducer array and the reflector are located on two sides of an object which are opposite to each other. Every channel of the transducer array can independently transmit and receive signal, and the reflector is used to reflect the transmitted signal from any channel. Thus, the system can collect the echoes from the reflector for all transmit/receive combinations, and then extract from the echoes the time-of-flight data and the attenuation data necessary for estimating the sound velocities and the attenuation coefficients, respectively. When estimating the sound velocities and the attenuation coefficients of different tissues in an object, the B-mode image is applied to provide the segmentation information of the object in order to improve the estimation accuracy.