摘要:
An ultrasound beam is repeatedly transmitted and received to and from an object, so that an echo signal is repeatedly obtained. A velocity of each of a plurality of portions on the ultrasound beam is calculated based on the echo signal. A position of at least one specific portion of the plurality of portions is tracked in as it changes with the passage of time based on the velocity to obtain a path where the specific portion moves. Conventionally the change of brightness of the M-mode image was tracked to obtain the path. According to the present invention, since the path is obtained based on the velocity having high resolution, the accuracy of track can be improved.
摘要:
When displaying a plurality of images in different conformations in relation to information of a tissue motion typified by a heart wall motion, support information which is used to rapidly and easily visually confirm a relative positional correspondence relationship between an MPR image, a polar mapping image, and a three-dimensional image is generated and displayed. A marker indicative of a desired local position is set and displayed as required. Further, a position corresponding to the set or changed marker may not be present on the MPR image. In such a case, the MPR image always including a position corresponding to the set or changed marker is generated and displayed by automatically adjusting a position of an MPR cross section.
摘要:
According to one embodiment, an image processing apparatus includes a storage unit, setting unit, associating unit, and registering unit. The storage unit stores 2D or 3D first time series image data and second time series image data over a predetermined period. The setting unit sets a first ROI on the first image data and a second ROI on the second image data for each of a plurality of phases in the predetermined period in accordance with a user instruction or by image processing. The associating unit associates the set first ROI with the set second ROI for each of the plurality of phases. The registering unit registers the first image data and the second image data for each of the plurality of phases based on a relative positional relationship between the first ROI and the second ROI which are associated with each other.
摘要:
Based on medical image data acquired in each time phase included in a one-cycle interval, first tracking part tracks the position of a first region of interest set in a first time phase in each time phase and tracks the position of a second region of interest set in a second time phase in each time phase. Based on position information of the first region of interest and the second region of interest in each time phase, position correction part obtains position information of a region of interest in each time phase so that it passes through the position of the first region of interest in the first time phase and the position of the second region of interest in the second time phase. Motion-information calculator obtains motion information of a tissue based on the obtained position information.
摘要:
A motion parameter measuring unit two-dimensionally measures a motion parameter of a myocardial tissue by a tracking process on time-series ultrasonic image data acquired by transmission and reception of ultrasonic waves to and from a sample. On the other hand, a time phase setting unit adds a diastolic heartbeat time phase, which is set on the basis of a systole end specified by a time phase where a cardiac cavity area of the ultrasonic image data is the smallest and a diastole end specified by an R wave in an electrocardiographic waveform of the sample, relative to the systole end to time-series parameter image data generated by a parameter image data generating unit on the basis of the motion parameter. An image data extracting unit extracts parameter image data to which the diastolic heartbeat time phase closest to a desired diastolic heartbeat time phase set by an input unit is added and displays the extracted parameter image data on a display unit.
摘要:
A contour specifying part receives volume data representing a subject acquired by transmission of ultrasonic waves to the subject, and specifies a 3-dimensional contour of a myocardium based on the volume data. A forming part sets a reference point on the contour of the myocardium, and forms an image generation plane including a plane substantially orthogonal to the contour of the myocardium at the reference point. An image generator generates image data on the image generation plane based on the volume data. A display controller controls a display to display an image based on the image data.
摘要:
An ultrasonic diagnostic apparatus disclosed herein comprises an ultrasonic probe which generates an ultrasonic beam, a volume data set collecting unit which collects a plurality of volume data sets corresponding to a plurality of three-dimensional scan ranges via the ultrasonic probe, the plurality of three-dimensional scan ranges partly overlapping one another, a region of interest setting unit which sets, in accordance with a user instruction, a region of interest on a first tomogram generated from particular one of the plurality of volume data sets, a tomogram generating unit which generates the first tomogram from the particular volume data set and also generates a second tomogram associated with a section including the region of interest from another volume data set corresponding to the three-dimensional scan range including the region of interest, and a display unit which displays the first tomogram and the second tomogram.
摘要:
An ultrasonic diagnostic apparatus includes a displacement measuring unit, a motor information measuring unit, a comparison parameter calculation unit and a parameter image data generating unit. The displacement measuring unit two-dimensionally measures displacements of a myocardial tissue in pieces of ultrasonic image data adjacent in time direction. The motor information measuring unit measures strains and strain rates of the myocardial tissue based on the displacements as motor information. The comparison parameter calculation unit calculates comparison parameters based on the strain rates, or the strains and strain rates. The parameter image data generating unit generates parameter image data using the comparison parameters.
摘要:
Position coordinate information of each point three-dimensionally forming a tissue corresponding to a diagnosis target at each time phase is obtained, a quantitative value for evaluating the movement of the tissue corresponding to the diagnosis target is calculated by using the position information, and the result is output in a predetermined form. Accordingly, since the quantitative value for evaluating the movement is calculated by using the three-dimensional position coordinate information without converting wall movement information obtained by a three-dimensional tracking process into two-dimensional information, it is possible to provide medical information with a higher degree of precision.
摘要:
A plurality of strain gauges defined by gauge endpoints are set in each time phase using motion vector information of tissue, and a three-dimensional strain gauge image in which each strain gauge is disposed at a three-dimensional position corresponding to, for example, an ultrasonic image in each time phase is generated and displayed. Moreover, an MPR image is set on volume data and is displayed in a predetermined form in a state where gauge coordinates are projected thereon.