146 results about "Color doppler" patented technology

A handheld ultrasound instrument is disclosed having enhanced diagnostic modes including pulse / continuous wave Doppler, time-motion analysis, spectral analysis and tissue harmonic imaging. An external electrocardiograph (ECG) recording unit is also disclosed. The ECG unit is adaptable to be used with the handheld ultrasound instrument to provide for ECG monitoring while performing an ultrasound scan in B-mode, Doppler, color Doppler, M-mode, and CW / PW mode. The enhanced handheld ultrasound instrument further includes a security mechanism allowing any combination of the diagnostic modes to be enabled by the manufacturer, and later to enable or disable any one or group of the diagnostic modes. The invention also discloses a method for a manufacturer to maintain a database of handheld ultrasound instrument capabilities after the instruments enter the stream of commerce.

Vector Doppler Imaging (VDI) improves on conventional Color Doppler Imaging (CDI) by giving speed and direction of blood flow at each pixel of a display generated by a computing system. Multiple angles of Plane wave transmissions (PWT) via an ultrasound transducer conveniently give projected Doppler measurements over a wide field of view, providing enough angular diversity to identify velocity vectors in a short time window while capturing transitory flow dynamics. A fast, aliasing-resistant velocity vector estimator for PWT is presented, and VDI imaging of a carotid artery with a 5 MHz linear array is shown using a novel synthetic particle flow visualization method.

The ultrasonic diagnostic system according to the present invention includes a kernel-data generating section for extracting first image data in a specified range set with reference to a specified pixel of a generated image data to generate kernel data, a pixel-value arranging section for modulating the values and arranging the values or the modulated values in descending order, a pixel-value selecting section for either selecting a pixel value in a specified rank or selecting a modulated pixel value in a specified rank and demodulating the modulated value, a characteristic determination section for determining the characteristic of the image from the pixel value of the first image data, and a second image-data generating section for selecting one of the value of a specified pixel in the first image data and the value in the specified rank or the demodulated value selected by the pixel selecting section to generate second image data. This allows reduction of black hole and highlighting of turbulent mosaic patterns without degradation in spatial resolution in an ultrasonic color Doppler method.

An ultrasonic diagnostic apparatus in which an image generation time can be reduced and a frame rate can be improved even in a color mode in which a two-dimensional color Doppler image obtained due to Doppler effect is combined with a B-mode image. The ultrasonic diagnostic apparatus includes an ultrasonic probe, a transmission system signal processing unit for supplying drive signals to the ultrasonic probe to transmit pulse trains, each including plural pulses respectively having frequency components of orthogonal frequency division multiplexing waves orthogonal to one another and having different center frequencies from one another, in the same direction, and a reception system signal processing unit for pulse-compressing the plural pulses having different frequency components included in each reception signal outputted from the ultrasonic probe which has received the pulse trains from the same direction, and generating a B-mode image signal based on the compressed pulse.

A method for measuring and displaying flow and flow volume in the vessel of a subject. The method includes acquiring ultrasound data from a subject and producing a color Doppler m-mode image depicting the vessel. A 3D representation of the color Doppler m-mode image is then generated to enable an operator to identify the blood vessel and window the ultrasound data accordingly to a selected range of heart beats. Blood vessel walls are automatically identified from the windowed ultrasound data and blood flow through the vessel lumen is measured using pulsed Doppler ultrasound, which is gated to substantially exclude data from outside the lumen. Volume flow through the vessel is determined by multiplying the measured blood flow with a calculated cross-sectional area of the vessel and an image indicative of the volume is then generated and displayed.

The invention discloses a Doppler image information-based visual description method of the heart flow field velocity vector field. The method is based on the two-dimensional color Doppler digital image information and comprises the following steps: extracting the blood flow velocity component in the sound beam direction on a two-dimensional observing plane; decomposing the flow of the two-dimensional observing plane to basic flow and vortex flow according to the characteristic of the two-dimensional observing plane flow field in three-dimensional flow field, then separately calculating the velocity components of basic flow and vortex flow in the sound beam direction and the direction perpendicular to the sound beam direction; and finally composing all the velocity components, calculating the true velocity vector of each particle in the two-dimensional observing plane flow field, and performing visual description to the blood flow velocity vector field in the image. The invention firstly provides a visual description method of the heart flow field blood flow velocity vector field on the basis of the color Doppler digital image treatment, thus greatly increasing the efficiency of the visual quantitative evaluation of the fluid mechanics state of the in situ heart.

An image-manipulation receiving unit receives an image manipulation by a user. A viewpoint / mark calculating unit calculates a viewpoint and a display position of a probe mark based on the image manipulation by the user. A mark-notation creating unit creates a probe mark, a front-back distinction mark, a line of indicating position just beneath probe center, a line of indicating scan area, and a quadrangular pyramid mark, as a mark. An image compositing unit then composites a color Doppler image with the marks, and displays them onto a monitor.

The invention discloses and provides a multi-angle plane wave coherent color Doppler imaging method which is high in imaging frame frequency, high in imaging efficiency and good in imaging effect and which can generate a more precise and reliable color blood flow image by combining. As all array element sets on an ultrasonic transducer are excited at the same time to generate ultrasonic plane waves instead of traditional point-by-point transmitted ultrasonic waves, whole imaging time is effectively shortened, imaging errors due to time difference overlap are also effectively reduced and imaging efficiency is improved; multiple plane waves are propagated to an imaging area by means of delayed deflection, a precise real-time composite image is acquired by coherence combination of various echo signals, the image can be subjected to non-blood-flow signal removal and calculation to generate a precise reliable color blood flow image. The multi-angle plane wave coherent color Doppler imaging method is applicable to the field of ultrasonic imaging.

Provided is an ultrasound imaging apparatus that is cable of estimating a three-dimensional effect of a blood flow, by using blood-flow velocity information obtained by a color Doppler method, and presenting diagnostic information into which the three-dimensional effect is reflected. The ultrasound imaging apparatus of the present invention is provided with an ultrasound probe configured to transmit ultrasound waves to a test object and to receive echo signals reflected from the test object, and a signal processor configured to process the echo signals received by the ultrasound probe, and the signal processor estimates the three-dimensional effect of the blood flow velocity, from a difference between a first blood flow velocity estimated from the echo signals by a first method, and a second blood flow velocity estimated by a second method which is different from the first method, and generates diagnostic information into which the three-dimensional effect is reflected.

The present invention relates to a method of improving a 3D ultrasound color Doppler image through a post-processing. A method of processing an ultrasound image, includes the following steps: a) recognizing a target object from an inputted ultrasound image based on an object recognition algorithm using connectivity of the target object; b) setting at least one object region by using the connectivity of the recognized target object; c) calculating a structure matrix by using voxel gradients of the object region; d) calculating a diffusion matrix from the structure matrix; and e) acquiring a processed ultrasound image by applying the diffusion matrix and the voxel gradients to the inputted ultrasound image.

An ultrasound diagnostic apparatus including: a tomogram forming means forming a tomogram of a diagnosis portion of an examinee by transmitting / receiving an ultrasound wave to / from the examinee via an ultrasound probe; color Doppler image forming means forming a color Doppler image based on a Doppler signal obtained from the diagnosis portion; image processing means performing image processing on the tomogram and the color Doppler image; and display means displaying images obtained by the image processing means, the tomogram and the color Doppler image being color displayed on the display means, wherein the image processing means causes the color Doppler image to be displayed transparently.

In the present invention, an image processing device is configured by including an ultrasonic wave transmitting section, an ultrasonic wave receiving section, a transmission and reception control section, a B mode signal processing section, a B mode image generating and storing section, an image synthesizing section, a Doppler signal processing section, a Doppler image generating and storing section, a Doppler scan region setting section, a Doppler scan region storing section, a Doppler scan control section, a region marker movement control section and a region marker image generating section. By the configuration, an observation target of which blood state needs to be grasped can be always optimally observed in real time in a Doppler image by a Color Doppler mode or a Power Doppler mode.

An ultrasonic diagnosis apparatus executes B-mode scanning and color Doppler mode scanning on a scanning region associated with an interior of the womb of a pregnant woman via an ultrasonic probe. A first generating unit generates first color Doppler mode data and generates first B-mode data. A specifying unit specifies a specific region including at least one of an amniotic fluid region and a fetus region based on one of a signal intensity distribution and a luminance distribution of the first B-mode data. A second generating unit generates second color Doppler mode data by deleting a specific data from the first color Doppler mode data. The specific color Doppler mode data corresponds to the specific region. A display unit displays a color Doppler mode image and a first B-mode image while superimposing the color Doppler mode image and the first B-mode image.

The invention belongs to a medical apparatus, particularly relating to a superficial vascular display instrument which combines a thermal infrared scanning function with a color Doppler ultrasound function. The superficial vascular display instrument comprises an infrared detection probe, a color Doppler ultrasound probe, a processing module, a power supply module, a storage module, a transmission module and a display module. In the invention, the thermal infrared scanning function and the color Doppler ultrasound function are miniaturized so that a handheld device is designed; and the handheld device can be carried conveniently and has the function of rapidly and accurately displaying a body superficial vascular static distribution map and a body superficial vascular dynamic analysis chart. When the superficial vascular display instrument is aligned with the part of human body needing to be observed, thermal infrared scanning can be carried out to obtain the vascular static map of the observed part, or color Doppler ultrasound scanning can be carried out to obtain the vascular dynamic analysis chart.

The invention discloses a method for tracking features of an ultrasound pattern and a system thereof. The method comprises the following steps: setting an initial region of features of interest; calculating the regional gray-scale similarity to obtain a regional gray-scale similarity parameter; reading Doppler velocity information in the region of features of interest, and establishing a constraint condition; and constructing a similarity measurement by combining the regional gray-scale similarity parameter and the constraint condition, and calculating the extreme value of the similarity measurement to obtain the position of a tracked track point. By combining the features of color Doppler tissue imaging, the invention effectively improves the accuracy and the robustness of tracking of the region of features.

The invention provides an ultrasonic color Doppler image post-processing method, which comprises the following steps of 1) setting a blood parameter estimation module in an ultrasonic color Doppler imaging system; 2) correspondingly receiving a blood flow variance signal and a blood flow velocity signal by a blood flow signal processing module; 3) setting a parameter pre-processing module in the ultrasonic color Doppler imaging system; 4) comparing and judging whether a signal is a blood flow signal or not by the parameter pre-processing module; 5) setting a spatial processing module for processing an image. Based on the above method, the generation of anomalous points is lowered maximally.

Vector Doppler Imaging (VDI) improves on conventional Color Doppler Imaging (CDI) by giving speed and direction of blood flow at each pixel of a display generated by a computing system. Multiple angles of Plane wave transmissions (PWT) via an ultrasound transducer conveniently give projected Doppler measurements over a wide field of view, providing enough angular diversity to identify velocity vectors in a short time window while capturing transitory flow dynamics. A fast, aliasing-resistant velocity vector estimator for PWT is presented, and VDI imaging of a carotid artery with a 5 MHz linear array is shown using a novel synthetic particle flow visualization method.

The invention provides an ultrasonic wave tissue-estimating device which can provide an index with a certain help to diagnose the tested tissue according to an ultrasonic gray-scale image and a co-frame color energy Doppler image. The ultrasonic wave tissue-estimating device estimates the vessel distribution of the tissue by ultrasonic energy Doppler and is characterized by being provided with an operation-setting part, an image-collecting part and an image-processing part, wherein the operation-setting part sets a uniform image-collecting condition; the image-collecting part adjusts the color gain, collects the ultrasonic gray-scale image and the co-frame color energy Doppler image of the tissue cross section and outputs cross section image data; and the image-processing part receives the cross section image data from the image-collecting part, defines the interesting area of the tested tissue and sorts the color Doppler signal strength into a plurality of scales according to a color-scale standard map to weight so as to acquire the vessel index of the tissue.

The invention discloses an adaptive visual positioning method of heart blood flow vortex movement based on color doppler image information. The method comprises the following steps of according to the distribution conditions of blue areas and red areas of a color doppler ultrasound heart blood flow image, determining the approximate area of the blood flow vortex movement; in the rough positioning area, determining the accurate boundary of the blood flow vortex movement area; in the accurate positioning area, obtaining a speed vector distribution chart of blood flow vortex movement; according to the speed vector distribution chart of blood flow vortex movement, obtaining a plane streamline chart of blood flow vortex movement; according to the plane streamline chart of blood flow vortex movement, judging the volume, shape and position information of blood flow vortex movement. The method has the advantages that the defect of objective selection of interested areas of the existing method is overcome, the precision of visual positioning of blood flow vortex movement of a heart flow filed is greatly improved, the solid foundation is laid for the accurate quantitative evaluation of blood flow vortex movement of the heart flow filed, and the accurate mechanical data support is also provided for the accurate evaluation of the heart mechanical function.

The invention discloses an automatic prediction and recognition method and system for an echocardiogram based on artificial intelligence. The method comprises the steps: acquiring a color Doppler video of at least one tangent plane of an echocardiogram of a detection object, extracting each video frame in the color Doppler video, inputting each video frame into a trained convolutional neural network to obtain an N-dimensional feature vector corresponding to each video frame, generating a weight corresponding to each video frame from the N-dimensional feature vector of each video frame throughan attention module, calculating the weighted sum of the N-dimensional feature vectors of each video frame by using the weight so as to obtain the overall feature representation of the color Doppler video, and based on the overall feature representation, calculating to obtain a prediction value containing the pre-recognized image feature. By means of the method, whether the to-be-recognized imagefeatures exist in the echocardiogram or not can be accurately predicted.

An ultrasound image displaying method includes creating a 3D image based on B mode data with a high luminance and a low luminance in a B mode image being inverted, creating a color overlaid 3D image by applying colors based on color Doppler mode data only for pixels of the 3D image having a luminance not more than a predetermined value in the B mode image, and displaying the color overlaid 3D image.

The invention provides an ultrasound imaging apparatus, an image processing apparatus and an image processing method. An image-manipulation receiving unit receives an image manipulation by a user. A viewpoint / mark calculating unit calculates a viewpoint and a display position of a probe mark based on the image manipulation by the user. A mark-notation creating unit creates a probe mark, a front-back distinction mark, a line of indicating position just beneath probe center, a line of indicating scan area, and a quadrangular pyramid mark, as a mark. An image compositing unit then composites a color Doppler image with the marks, and displays them onto a monitor.

By the configuration, an observation target of which blood state needs to be grasped can be always optimally observed in real time in a Doppler image by a Color Doppler mode or a Power Doppler mode.In the present invention, an image processing device is configured by including an ultrasonic wave transmitting section, an ultrasonic wave receiving section, a transmission and reception control section, a B mode signal processing section, a B mode image generating and storing section, an image synthesizing section, a Doppler signal processing section, a Doppler image generating and storing section, a Doppler scan region setting section, a Doppler scan region storing section, a Doppler scan control section, a region marker movement control section and a region marker image generating section.

The invention belongs to the fields of medical instruments and communication products, particularly relates to a mobile phone combining infrared thermo-scanning and color doppler ultrasound scanning functions, which integrates the function of the traditional mobile phone module, and also integrates an infrared thermo-scanning module, a minitype doppler ultrasound module, a processing module and mobile phone software. By using the mobile phone with the functions of infrared thermo-scanning and color doppler ultrasound scanning, the patients can be diagnosed in dangerous emergency treatment in a fastest speed, and static and dynamic diagrams of blood vessels of the observed parts of the patients are displayed, thus shortening the saving time to a large extent, and improving the saving efficiency.

A hand held ultrasound scanning apparatus of a type able to perform multiple scan modes and a hand held display and processing unit able to receive and display ultrasound scanline data, having a control for initiation and termination of ultrasound scanning where further operation of the same control causes the scan mode in use by the apparatus to move progressively through the available scan modes. The scan modes are selected from B-mode, M-mode, Gated Doppler, Power Doppler, Pulsed Wave Doppler, Color Doppler, Duplex Doppler, and 3D volume imaging.

The invention discloses an efficient painless drug for treating local tumor ablation. The efficient painless drug is mixed solution of absolute ethyl alcohol and lauromacrogol, wherein the ratio of lauromacrogol is 0.1-99.9%, and the ratio of absolute ethyl alcohol is 99.9%-0.1% according to the volume fraction. The efficient painless drug for treating local tumor ablation, which is injected into local tumor under guide of an ultrasonic imaging technique, is the mixed solution of absolute ethyl alcohol and lauromacrogol according to the volume ratio of 19 / 1 to 99 / 1; and volume ratio of absolute ethyl alcohol to lauromacrogol preferably is 99 / 1 or 19 / 1; the efficient painless drug for treating local tumor ablation is applied to preparation of the drug for treating ablation by being injected to the tumor under guide of the ultrasonic imaging technique; the sufferer has no adverse reaction such as pain in an operation; and the postoperation color Doppler ultrasonic review finds out that the tumor echo is increased, blood flow signals are obviously reduced, and the indexes of a part of patients with rising alpha fetal protein are obviously reduced by review.

A method of displaying an ultrasound image may improve the accuracy of disease diagnosis by enabling a user to recognize an accurate direction of a bloodstream. The method includes: obtaining first Doppler data that is generated by transmitting an ultrasound signal to an object and receiving an echo signal reflected from the object by using a probe; displaying a sound source marker at a first position on a screen; and generating and displaying a first color Doppler image from the first Doppler data in consideration of the first position.

The invention discloses a coding device and a coding method of a color doppler ultrasonic diagnostic apparatus; wherein, the coding device consists of a variable selection module, a double-threshold control module and a coding module; the variable selection module and the double-threshold control module are respectively connected with the coding module; the variable selection module is used for determining corresponding imaging variables according to a selected color blood flow imaging mode and outputs the imaging variables to the coding module, the double-threshold control module is used for setting a velocity threshold and a gray threshold and for comparing the absolute value of input average velocity data as well as two-dimensional gray value data with the velocity threshold and the gray threshold respectively to form a color code index which is output to the coding module, and the coding module is used for color-coding the imaging variables according to the color code index or performing gray code to the two-dimensional gray value data.

The invention relates to a handheld wireless probe type ultrasonic system. The handheld wireless probe type ultrasonic system comprises a mainframe body and at least two kinds of probes applied to different detection positions; the inner portion of the mainframe body is provided with a mainboard; the probes are detachably connected with the mainframe body; the mainframe body is wirelessly connected with display equipment; the probes are used for transmitting ultrasonic signals under the control of the mainboard; the mainboard is used for controlling the probes to work, processing the ultrasonic signals returned through the detection positions and sending the processed ultrasonic signals to the display equipment for color Doppler imaging. Through the wireless connection mode, the handheld wireless probe type ultrasonic system can send the ultrasonic signals to the display equipment for color Doppler imaging very conveniently.