97 results about "Arfi elastography" patented technology

The method for vascular elastography comprises: i) obtaining a sequence of radio-frequency (RF) images including pre-tissue-motion and post-tissue-motion images in digital form of a vessel delimited by a vascular wall; the pre-tissue-motion and post-tissue-motion images being representative of first and second time-delayed configuration, of the whole vessel; ii) partitioning both the pre-tissue-motion and post-tissue-motion images within the vascular wall into corresponding data windows; approximating a trajectory between the pre- and post-tissue-motion for corresponding data windows; and using the trajectory for each data window to compute the full strain tensor in each data window, which allow determining the Von Mises coefficient. The method can be adapted for non-invasive vascular elastography (NIVE), for non-invasive vascular micro-elastography (MicroNIVE) on small vessels, and for endovascular elastography (EVE).

The invention relates to an ultrasonic elastic imaging system and method. The ultrasonic elastic imaging system comprises a control unit, an exciting unit, a probe and an ultrasonic signal processing unit. The probe comprises an ultrasonic sensor array, a vibration exciter and a pressure sensor. The control unit selects a work mode according to a received user instruction and converts the user instruction into a control signal. The exciting unit receives the controls signal and outputs a vibration exciting signal; the vibration exciter receives the vibration exciting signal and drives the probe to make periodical mechanical vibration; the ultrasonic signal processing unit receives the control signal, transmits and receives ultrasonic waves through the ultrasonic sensor array and performs signal processing on the received ultrasonic waves, and a processing result is sent to the control unit. An instantaneous elastic imaging probe and a B ultrasonic mode probe are combined. The B ultrasonic mode probe has the effects of transmitting and receiving ultrasounds and meanwhile has the function of vibrating an exciting source. Seamless switching of elastic imaging measurement and B ultrasonic mode measurement is achieved through the relevant imaging process and the relevant imaging algorithm. The problem that ultrasonic elastic imaging in the prior art is not accurate is solved.

The invention relates to a multipulse elastography method (100) for quantitatively measuring at least one mechanical property of a viscoelastic medium having an ultrasonic signal after ultrasonic illumination, said method (100) comprising the following steps: defining (101) the characteristics of at least two mechanical pulses; generating (102) said at least two mechanical pulses in a viscoelastic medium; monitoring (103) the propagation, in said viscoelastic medium, of the at least two shearing waves from said at least two mechanical pulses by means of the transmission and acquisition of ultrasonic signals; and calculating (104) at least one mechanical property of said viscoelastic medium by means of said acquisitions of said ultrasonic signals.

The invention discloses an ultrasonic peeping probe and an elastic imaging system and method. The ultrasonic peeping probe comprises an ultrasonic transducer array including multiple ultrasonic transducers for transmitting ultrasonic waves and receiving ultrasonic echoes, reflected by the biological tissue to be detected of ultrasonic waves, and a self-focused ultrasonic transducer for producing focused ultrasonic wave beams, wherein the focused ultrasonic wave beams produce an acoustic radiation force acting on the biological tissue to be detected. The ultrasonic peeping probe produces the focused ultrasonic wave beams through the self-focused ultrasonic transducer, acts on the biological tissue to be detected through the acoustic radiation force of the focused ultrasonic wave beams and accordingly makes the biological tissue to be detected deform. Accordingly, the ultrasonic echo signals of the biological tissue before and after compression are obtained by adopting the ultrasonic peeping probe without the external force exerted by an operator, the operating process is simple and convenient without external mechanical devices, and the system cost is reduced.

A High Definition ViscoElastography (HDVE) inertial driver apparatus of an imaging system and method includes one or more HDVE inertial driver devices. Each HDVE inertial driver device has: (i) a driver interface that enables receiving a driver signal from a controller; (ii) a resonating surface; and (iii) an inertial driver communicatively coupled to the driver interface and mechanically coupled to the resonating surface to independently generate a resonating displacement of the resonating surface. A support member of the HDVE inertial driver apparatus positions the two or more HDVE inertial driver devices into acoustic contact with a body to produce a shear wave field through a volume of tissue within the body or a material within an object.

The invention provides a hydraulic ultrasonic probe for elasticity imaging. The hydraulic ultrasonic probe for elasticity imaging comprises an installing seat, wherein the installing seat is providedwith a vertical upright post through a rotating device; a first cylinder body is arranged on the upright post; the right end of the first cylinder body is provided with an opening; a first piston block is arranged in the first cylinder body in a cooperative way; a first rod body is fixedly arranged at the right side wall of the first piston block; vertical elastic telescopic rods are symmetricallyarranged at the upper and lower side walls of the first rod body; and a hemispheroid is arranged on each of the elastic telescopic rods. The ultrasonic probe is controlled to press the human body formany times through a reciprocating ascending and descending device; meanwhile, the reciprocating ascending and descending device does vertical reciprocating movement for a certain number of times, and then, the ultrasonic probe can be pushed to move a certain distance to detect the next region of the human body; in addition, in the moving process, the ultrasonic probe is enabled to be always in contact with the body surface of a patient; and in addition, through the cooperation of the elastic telescopic rod, the hemispheroids and arc-shaped grooves, the counting effect is achieved on the number of the vertical reciprocating movement times of the ultrasonic probe, so that the downwards pressing number of the ultrasonic probe in each time is identical, and the influence of the elasticity imaging result on the judgment of doctors is avoided.

The embodiment of the application discloses a shear wave elasticity imaging method and system and a computer readable storage medium. The method comprises the following steps: controlling a probe to transmit ultrasonic waves to tested tissue; receiving an ultrasonic echo returned by the tested tissue, and controlling the probe to convert the ultrasonic echo to obtain an ultrasonic echo signal; acquiring a reference image of the tested tissue when the tested tissue is in the first state based on the ultrasonic echo signal; acquiring a comparison image of the tested tissue when the tested tissueis in a second state based on the ultrasonic echo signal in a shear wave imaging mode; determining the pressure state of the tested tissue relative to the probe when the tested tissue is in the second state according to the reference image and the comparison image; and controlling display of prompt information corresponding to the pressure state. According to the shear wave elasticity imaging method, the ultrasonic imaging system and the computer readable storage medium, the pressure state between the probe and the tested tissue is determined through the ultrasonic image, and the corresponding prompt information is output, so that a user can conveniently determine the accuracy of the obtained elasticity information of the tested tissue according to the prompt information.

The invention relates to a method for generating a synthetic elastography image (18), the method comprising the steps of (a) receiving a B-mode ultrasound image (5) of a region of interest; (b) generating a synthetic elastography image (18) of the region of interest by applying a trained artificial neural network (16) to the B-mode ultrasound image (5). The invention also relates to a method for training an artificial neural network (16)5 useful in generating synthetic elastography images, and a related computer program and system.

The invention discloses an ultrasonic detection probe. The ultrasonic detection probe comprises a shell; an ultrasonic transducer; the sound transmission structure is arranged at the front end of the ultrasonic transducer; the driving assembly is arranged in the shell, and the driving assembly is used for driving the sound transmission structure; wherein the sound transmission structure is provided with a first cavity, and a sound transmission medium is arranged in the first cavity. When the driving assembly drives the sound transmission structure to vibrate, shear waves are generated in the detection target, and more ultrasonic signals emitted by the ultrasonic transducer can be propagated in the sound transmission medium through the sound transmission medium in the sound transmission structure, so that propagation in the sound transmission structure is reduced, attenuation of the ultrasonic signals can be reduced, and the detection accuracy is improved. And thus, the elasticity imaging detection quality is improved.

The invention discloses an ultrasonic probe. The ultrasonic probe comprises a shell; an ultrasonic transducer; a convex part is arranged at the top of the sound transmission structure, and the sound transmission structure is arranged at the front end of the ultrasonic transducer; the driving assembly is arranged in the shell and is used for driving the sound transmission structure; and the curved surface structure extends from the end face of the convex part to the edge of the sound transmission structure, first curved surfaces are formed on the left side and the right side of the convex part, each first curved surface comprises a concave curved surface section, and the concave curved surface sections extend downwards along the left side and the right side of the end face of the convex part. According to the invention, the two-dimensional imaging effect can be improved while high-quality instantaneous elastography detection is realized.

Systems and methods are provided for employing informational models trained using the Autoprogressive Algorithm to learn the mechanical behavior and internal structure of biological materials using a sparse sampling of force and displacement measurements. Forces are applied to the biological material and the force and displacement are measured and applied to the AutoP algorithm. Additionally, a coordinate based scaling factor is applied to the measured displacement.

The invention discloses a muscle ultrasonic elastography optimization method and system. The method comprises the steps as follows: obtaining elastography data and muscle ultrasonic data in a muscle elasticity ultrasonic video, and determining muscle hardness characteristics and muscle fiber length characteristics according to the elastography data and the muscle ultrasonic data; according to the muscle hardness characteristics and the muscle fiber length characteristics, determining a relation curve of the muscle hardness characteristics and the muscle fiber length characteristics, and generating a goodness-of-fit topographic map; according to the goodness-of-fit topographic map, performing binarization processing on the goodness-of-fit topographic map to obtain a region of interest in the elastography data; and screening and optimizing the muscle hardness characteristics according to a muscle hardness diagram corresponding to the region of interest and the muscle hardness characteristics. According to the muscle ultrasonic elastography optimization method and system, physiological characteristics of muscles subjected to ultrasonic elastography can be fully utilized, the region of interest of muscle ultrasonic elastography is automatically selected, and therefore, noise interference in the muscle ultrasonic elastography is eliminated.

An ultrasonic imaging method comprises the following steps of emitting an ultrasonic wave to interested target tissue in a contrast imaging manner, and receiving an echo signal, to obtain contrast images of the interested target tissue within a period of time; determining a reference section in each contrast image, and meanwhile acquiring a tissue structure image corresponding to the reference section; emitting the ultrasonic wave to the interested target tissue to obtain current tissue structure images; matching the current tissue structure images with the tissue structure images corresponding to the reference sections, and determining to-be-examined section of current tissue structure images meeting the predetermined condition; emitting the ultrasonic wave to the interested target tissue in an elasticity imaging manner, to obtain an elasticity image of the interested target tissue on each to-be-examined section; and at least simultaneously displaying the contrast images of the reference sections and the elasticity images on the to-be-examined sections. Contrast imaging and elasticity imaging are carried out on a same section and the contrast images and the elasticity images are displayed at the same time, so that the operation process of a user is simplified, and the examination result is more accurate and reliable.

The invention belongs to the technical field of medical equipment, and particularly relates to a portable fatty liver detection device based on ultrasound and a data processing method thereof. Aiming at the difficulty in miniaturization and portability of an ultrasonic-based fatty liver detection device in the prior art, the invention provides a data processing method of the portable fatty liver detection device based on ultrasound, and the method comprises the following steps: enabling an ultrasonic probe to emit ultrasonic waves with at least two frequencies and receive ultrasonic echo data; performing beam forming on the ultrasonic echo data to obtain ultrasonic RF data; and finally, according to an instruction of a user, outputting the ultrasonic RF data, or performing post-processing on the ultrasonic RF data in the portable fatty liver detection device. The invention further provides a portable fatty liver detection device which is simple in structure, low in power and small in size. Under the condition that the requirement for the chip structure is extremely low, portable equipment can detect the fatty liver by obtaining an ultrasonic attenuation coefficient or an elastic imaging result and the like.

A method is described for acquiring 3D quantitative ultrasound elastography volumes. A 2D ultrasound transducer scans a volume of tissue through which shear waves are created using an external vibration source, the synchronized measurement of tissue motion within the plane of the ultrasound transducer with the measurement of the transducer location in space, the reconstruction of tissue displacements and/or tissue velocities in time and space over a volume from this synchronized measurement, and the computation of one or several mechanical properties of tissue from this volumetric measurement of displacements. The tissue motion in the plane of the transducer may be measured at a high effective frame rate in the axial direction of the transducer, or in the axial and lateral directions of the transducer. The tissue displacements and/or tissue velocities over the measured volume may be interpolated over a regular grid in order to facilitate computation of mechanical properties.

The embodiment of the invention provides an elastic imaging method and device, electronic equipment and a storage medium. The method comprises the steps: applying vibration excitation to a to-be-detected tissue, and carrying out the ultrasonic detection, thereby obtaining an ultrasonic echo signal; according to the ultrasonic echo signal, an ultrasonic detection image and an elasticity detection image are generated, and the elasticity detection image is used for representing tissue elasticity detection information and the signal quality of the ultrasonic detection signal at the corresponding moment; according to the position relation between the test region corresponding to the ultrasonic detection image and the test region corresponding to the elasticity detection image, the ultrasonic detection image and the elasticity detection image are displayed in an overlapped mode, and after the ultrasonic detection image is generated, the elasticity detection image is displayed on the ultrasonic detection image in an overlapped mode. The imaging quality of the ultrasonic detection image is represented by using the elastic detection image, so that an operator can quickly control the quality of the detection result, the influence caused by the reasons such as poor test position and breath of the detected human body is eliminated, the ultrasonic imaging quality is improved, and the accuracy of the detection result is improved.

The invention discloses a cornea elasticity modulus detection device based on transparent ultrasonic transducer photoelastic imaging, and relates to the field of cornea detection, the cornea elasticity modulus detection device comprises a mounting seat and two groups of main cylinders, a positioning cylinder is mounted at the bottom end of the mounting seat between the two groups of main cylinders, and the end part of the output end of the positioning cylinder is connected with a connecting piece; and movable air cylinders are installed on the two sides of the output end of the positioning air cylinder, movable blocks are connected to the ends of the movable air cylinders, movable plates are movably connected to the outer sides of the movable blocks, an ultrasonic probe is installed at the bottom end of each movable plate, and an extrusion air cylinder and a cleaning mechanism are arranged on the two sides of each ultrasonic probe correspondingly. Through the arranged resin strip and the cleaning mechanism, after the outer side of the eyelid is detected, the cleaning mechanism moves, a movable rod moves in a rolling groove formed in the resin strip, and the movable rod moves left and right along a corrugated groove, so that a supporting plate, a hanging plate and bristles are driven to move left and right, and the bristles can clean a coupling agent on the outer side of the eyelid.