39 results about "Ultrasound Mode" patented technology

An electromagnetic vibrator includes a vibration sheet, suspension edge, basin frame and magnetic return path system. The electromagnetic vibrator is prepared as connecting back surface of vibration sheet to voice coil being set in magnetic return path system, injecting the vibration sheet and suspension edge to be an integral unit, connecting suspension edge with basin frame by ultrasonic mode and connecting vice coil wire to terminal sheet on basin frame after the wire is connected by vibration sheet.

An ultrasound system for identifying a vessel of a subject comprises: an ultrasound probe configured to simultaneously acquire a sequence of ultrasound blood flow data frames (such as a sequence of ultrasound Doppler data frames) and a sequence of ultrasound B-mode data frames of a region of interest including the vessel over a predetermined time period; a blood flow region selecting unit configured to select a blood flow region in the sequence of blood flow data frames; and a vessel segmenting unit configured to segment the vessel in at least one frame of the sequence of ultrasound B-mode data frames based on the selected blood flow region. Since there is no need to manually place any seed point for vessel segmentation any more, the user dependency is reduced and a fast measurement is made possible.

An electromagnetic vibrator is composed of vibration sheet, suspension edge, basin frame and magnetic return path system. The electromagnetic vibrator is prepared as connecting back surface of vibration sheet to voice coil being set in magnetic return path system, injecting the vibration sheet and suspension edge to be an integral unit, connecting suspension edge with basin frame by ultrasonic mode and connecting vice coil wire to terminal sheet on basin frame after the wire is connected by vibration sheet.

The invention discloses a color ultrasound system, and a beamforming line data acquisition method and a beamforming line data acquisition device for the color ultrasound system. The method comprises the following steps that: a processor transmits a control command according to a currently triggered color ultrasound mode; the processor receives digital ultrasound echo signal data acquired according to the control command, wherein the digital ultrasound echo signal data is a digital signal obtained by performing analogue-to-digital conversion processing on an analogue ultrasound echo signal; and the processor performs beamforming processing on the digital ultrasound echo signal data to acquire corresponding beamforming line data. According to the color ultrasound system, the method and the device, the hardware design of the color ultrasound system is simple and high in flexibility; and moreover, resources are saved in a technological upgrading process, and cost is lowered.

A computer 12 of an image processing apparatus 11 acquires ultrasound B-mode images of consecutive frames to estimate a carotid artery wall at a carotid artery minor axis cross section included in an ultrasound B-mode image of a predetermined frame. The computer 12 also uses, as a template image, the ultrasound B-mode image, which includes the estimated carotid artery wall and surrounding tissues of the carotid artery wall and estimates the size of the diameter of the carotid artery wall so as to minimize a margin of error between a transformed template image, which is created by transforming the template image, and the acquired ultrasound B-mode image of each frame, thereby acquiring the time change of the carotid artery wall.

An electrodynamic transducer having a coil, a membrane, and a plate is disclosed, wherein the transducer is adapted to generate a sound pressure level in the human-audible acoustic range and the ultrasonic range so that the transducer may be used as a speaker and an ultrasonic proximity sensor. The transducer may be adapted to generate a sound pressure level above about 88 dB between 20 kHz and 70 kHz. Additionally, the transducer may be adapted to generate a sound pressure level of between about 90 dB and 95 dB between 20 kHz and 70 kHz. The plate may include a structural rigidity increasing feature such as a domed portion or a population of ribs, which may increase the generated sound pressure level in the ultrasonic range. The transducer may also include a front resonator which may be used to further tune and / or increase the generated sound pressure level in the ultrasonic range.

An embodiment in accordance with the present invention provides a precise catheter tracking system, Active Ultrasound Pattern Injection System (AUSPIS). AUSPIS establishes ultrasonic communication between any ultrasound external probe and internal catheter (CUTE catheter). The system receives image beacon pulses, analyzes the acquired signal, and fires one or a series of active echo pulses from the same active echo element with a proper timing, frequency, duration and amplitude. Thus it enables injection of any “virtual” pattern into the B-mode image. The pattern injected to the B-mode image is from actively encoded ultrasound field in the tissue. The encoding is based on B-mode ultrasound image formation technique, so it doesn't require hardware or software modification to the US machine. It continuously measures the local acoustic signal amplitude, by which sub-millimeter elevation localization accuracy can be achieved. The technique can be used for tracking, tool guidance, and annotation with configured tracking formations.

The invention provides an electromagnetic ultrasonic probe with a variable structure. The electromagnetic ultrasonic probe comprises an anti-interference shielding cover, a probe interface, a deflector rod, a bias magnetic field and an EMAT (Electro Magnetic Acoustic Transducer) coil, wherein the anti-interference shielding cover covers the bias magnetic field and the EMAT coil; the anti-interference shielding cover is mechanically connected with the probe interface which is electrically connected with the EMAT coil through a lead; the probe interface is used for introducing an external excitation signal; the EMAT coil is used for exciting an ultrasound signal; the bias magnetic field is provided by a periodic magnet and is arranged above the EMAT coil; the EMAT coil is of a folding line type coil structure, the distances S1 between every two adjacent leads are the same, the periodic magnet can horizontally move at the displacements S2 above the EMAT coil through the deflector rod, and S1=S2. The aim of detecting different kinds of defects is realized by exciting in various ultrasound modes through the same probe structure.

Non-linear decorrelation fusion ultrasonic multi-parameter thermal coagulation detection and imaging method, (1), collect multi-beam pulse inversion ultrasonic radio frequency signals and store imaging parameters during thermal ablation; (2), construct a bandpass based on radio frequency signals and imaging parameters The filter extracts the harmonic components of the signal, and obtains the pulse inversion harmonic signal matrix; (3), select the appropriate mother wavelet to perform correlation analysis on all the sampling lines of the pulse inversion harmonic signal matrix, and extract the correlation coefficient under the maximum correlation scale to construct a nonlinear Decorrelate the two-dimensional correlation coefficient matrix; (4) perform ultrasonic multi-parameter estimation on the correlation coefficient matrix, and construct an ultrasonic multi-parameter thermal coagulation identification image based on the ultrasonic B-mode image; the invention aims to extract and enhance the ultrasonic thermal coagulation region. Non-linear features can suppress background tissue information, effectively improve the detection accuracy, sensitivity and imaging quality of thermal coagulation, and improve the accuracy of ultrasonic monitoring and identification.

The invention discloses an ultrasonic and photoacoustic dual-mode transceiver integrated optical fiber ultrasonic probe and a detection method, which belong to the technical field of ultrasonic excitation and detection. It includes a guiding optical fiber, a first wavelength selective transmission film, a wavelength selective absorption film and a second wavelength selective transmission film. When the fiber optic ultrasonic probe works in the ultrasonic mode, the fiber optic probe itself absorbs the excitation light and generates ultrasonic waves, and the ultrasonic waves are transmitted forward and are reflected back to the fiber optic ultrasonic probe by the object to be measured. The image information of the object; when the optical fiber probe works in the photoacoustic mode, the excitation light passes through the optical fiber ultrasonic probe and forwards to the object to be measured, the object to be measured absorbs the excitation light and generates ultrasonic waves, and the optical fiber probe detects the object to be measured by detecting The ultrasonic wave generated by the object obtains the image information of the object to be measured. The invention enables the optical fiber ultrasonic probe to simultaneously realize ultrasonic excitation and ultrasonic detection in two working modes of ultrasonic and photoacoustic.