摘要:
The ultrasound diagnostic apparatus, ultrasound image generation apparatus and method transmit ultrasound waves to a subject into which a puncture tool is inserted, receive reflected waves reflected from the subject and the puncture tool, and generate echo signals of time-sequential frames based on the received reflected waves, and generate an ultrasound image of the subject based on the generated echo signals. These apparatus and method generate a differential echo signal between time-sequential frames from the echo signals, perform a tip detection process based on the differential echo signal to thereby detect at least one tip candidate including a tip end of the puncture tool, highlight a tip candidate of the puncture tool detected to thereby generate a tip image, and display the tip image of the highlighted puncture tool so as to be superimposed on the generated ultrasound image.
摘要:
The ultrasound diagnostic apparatus, ultrasound image generation apparatus and method transmit ultrasound waves to a subject into which a puncture tool is inserted, receive reflected waves reflected from the subject and the puncture tool, and generate echo signals of time-sequential frames based on the received reflected waves, and generate an ultrasound image of the subject based on the generated echo signals. These apparatus and method generate a differential echo signal between time-sequential frames from the echo signals, perform a tip detection process based on the differential echo signal to thereby detect at least one tip candidate including a tip end of the puncture tool, highlight a tip candidate of the puncture tool detected to thereby generate a tip image, and display the tip image of the highlighted puncture tool so as to be superimposed on the generated ultrasound image.
摘要:
The ultrasound diagnostic apparatus, ultrasound image generation apparatus and method transmit ultrasound waves to a subject into which a puncture tool is inserted, receive reflected waves reflected from the subject and the puncture tool, and generate echo signals of time-sequential frames based on the received reflected waves, and generate an ultrasound image of the subject based on the generated echo signals. These apparatus and method generate a differential echo signal between time-sequential frames from the echo signals, perform a tip detection process based on the differential echo signal to thereby detect at least one tip candidate including a tip end of the puncture tool, highlight a tip candidate of the puncture tool detected to thereby generate a tip image, and display the tip image of the highlighted puncture tool so as to be superimposed on the generated ultrasound image.
摘要:
An ultrasound diagnostic apparatus includes plural ultrasound transducers which perform transmission and reception of ultrasonic waves toward a target site of a subject containing a puncture needle. A method of transmitting and receiving an ultrasonic wave uses the ultrasound transducers. The apparatus and the method form an ultrasonic beam to be transmitted from a transmit aperture set on the ultrasound transducers, acquire information relating to a specular-reflective component of the ultrasonic beam in the puncture needle, set a first receive aperture different from the transmit aperture set on the ultrasound transducers on the basis of the information relating to the specular-reflective component of the ultrasonic beam, and process an ultrasonic echo signal received by the ultrasound transducers using the first receive aperture.
摘要:
An ultrasound diagnosis apparatus includes an ultrasound probe having a plurality of elements arranged therein, the ultrasound probe transmitting ultrasound toward a subject, receiving an ultrasound signal reflected off the subject, and outputting a received signal; a device that changes a preset assumed sound speed with respect to an actual sound speed of the ultrasound transmitted toward the subject; and a frame position calculation device that determines similarity of each portion between each frame by using speckles in RF data or amplitude images based on two or more of the different assumed sound speeds and calculates frame positions, thereby determining similarity in a stable, uniform, accurate manner without lowering a frame rate.
摘要:
An ultrasonic diagnostic apparatus capable of detecting a boundary between structures within the object with high accuracy and performing imaging processing based thereon. The ultrasonic diagnostic apparatus includes: a transmission and reception unit for converting reception signals outputted from ultrasonic transducers into digital signals; a phase matching unit for performing reception focus processing on the digital signals to generate sound ray signals; a signal processing unit for performing envelope detection processing on the sound ray signals to generate envelope signals; an image data generating unit for generating image data based on the envelope signals; a direction determining unit for determining a direction of a boundary between structures within the object based on the sound ray signals; and an image processing unit for performing image processing on the envelope signals or the image data according to a determination result obtained by the direction determining unit.
摘要:
Provided are an ultrasound image producing method and an ultrasound image diagnostic apparatus that can quickly decide the presence or the absence of influence of refraction, can shorten the time taken for measurement or calculation, can perform measurement or calculation with a small error, and can calculate accurate local sound velocity values. A lattice is set in a region-of-interest, environmental sound velocity values of two or more lattice points located at different positions in a scanning direction of ultrasonic waves are measured as preliminary sound velocity measurement, and main sound velocity measurement that calculates local sound velocity values in lattice points is performed when the difference between a maximum value and a minimum value of the measured environmental sound velocity values is equal to or lower than a predetermined threshold.
摘要:
The object is to determine an optimum sonic speed without requiring memory, circuits and processing time therefor. The object is achieved by providing an ultrasonic diagnosis apparatus having an ultrasonic probe in which a plurality of elements for transmitting an ultrasonic wave to a subject and, by receiving an ultrasonic signal reflected from the subject, outputting the received signal are arrayed; a device which changes an assumed sonic speed set in advance relative to the actual sonic speed of the ultrasonic wave to be transmitted to the subject; and an optimum sonic speed judgment device which judges a micro-structure by an RF signal obtained from the received signal by changing the assumed sonic speed and performing focusing with a delay based on the assumed sonic speed, and judges an optimum sonic speed, which is the ultrasonic speed of the subject, from phase information about the RF signal judged to be the micro-structure.
摘要:
An ultrasound diagnostic apparatus includes: a controller for controlling a transmission circuit and a reception circuit to obtain reception data for measuring a sound speed and to obtain first reception data for producing a B mode image; a sound speed map producer for producing a sound speed map for the inside of the region of interest based on the reception data for measuring a sound speed; and an image producer for producing a B mode image based on the first reception data for producing a B mode image and second reception data for producing a B mode image, the second reception data for producing a B mode image being reception data for measuring a sound speed obtained by transmitting and receiving ultrasonic beams with forming transmission focuses at points having a depth closest to the given depth on sound rays passing inside the region of interest.