Ultrasound image capture device, ultrasound image capture method, ultrasound image capture program
First Claim
Patent Images
1. An ultrasound imaging device that images an ultrasound image, comprising:
- an ultrasound transceiver configured to irradiates an ultrasound wave to a subject and receives a reflected signal;
a blood flow detection unit configured to detects a blood flow velocity in the subject using the reflected signal; and
a shape recognition unit configured to recognize a tissue shape of the subject using the reflected signal;
wherein the blood flow detection unit is configured to;
remove an image portion indicating a tissue shape of the subject based on a plurality of ultrasound images of the subject created by using the reflected signal at different times,calculate a blood flow velocity vector in the subject based on a plurality of images at different times in which the image portion indicating the tissue shape of the subject is removed,identify a boundary surface between a tissue of the subject and a blood flow based on a recognition result of the shape recognition unit, andcalculate or correct the blood flow velocity by applying a consistent condition under a fluid mechanics on the boundary surface.
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Abstract
Provided is a technology which quantitatively measures blood flow in the vicinity of circulatory organs. An ultrasound image capture device according to the present invention removes an image portion corresponding to an organ shape by taking the difference of a multi-frame ultrasound image, and thereafter computes a measured value of a blood flow velocity vector on the basis of a plurality of images at different timings (as per FIG. 3).
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Citations
12 Claims
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1. An ultrasound imaging device that images an ultrasound image, comprising:
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an ultrasound transceiver configured to irradiates an ultrasound wave to a subject and receives a reflected signal; a blood flow detection unit configured to detects a blood flow velocity in the subject using the reflected signal; and a shape recognition unit configured to recognize a tissue shape of the subject using the reflected signal; wherein the blood flow detection unit is configured to; remove an image portion indicating a tissue shape of the subject based on a plurality of ultrasound images of the subject created by using the reflected signal at different times, calculate a blood flow velocity vector in the subject based on a plurality of images at different times in which the image portion indicating the tissue shape of the subject is removed, identify a boundary surface between a tissue of the subject and a blood flow based on a recognition result of the shape recognition unit, and calculate or correct the blood flow velocity by applying a consistent condition under a fluid mechanics on the boundary surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An ultrasound imaging method for imaging an ultrasound image, comprising:
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irradiating an ultrasound wave to a subject and receiving a reflected signal; and detecting a blood flow velocity in the subject using the reflected signal; and recognizing a tissue shape of the subject using the reflected signal; wherein the detecting the blood flow includes; removing an image portion indicating a tissue shape of the subject based on a plurality of ultrasound images of the subject created by using the reflected signal at different times, calculating a blood flow velocity vector in the subject based on a plurality of images at different times in which the image portion indicating the tissue shape of the subject is removed, identifying a boundary surface between a tissue of the subject and a blood flow based on a recognition result of the shape recognition unit, and calculating or correcting the blood flow velocity by applying a consistent condition under a fluid mechanics on the boundary surface.
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12. A non-transitory computer-readable medium storing executable instructions that, in response to execution, cause a computer to perform operations comprising:
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irradiating an ultrasound wave to a subject and receiving a reflected signal; detecting a blood flow velocity in the subject using the reflected signal; and recognizing a tissue shape of the subject using the reflected signal; wherein the detecting the blood flow includes; removing an image portion indicating a tissue shape of the subject based on a plurality of ultrasound images of the subject created by using the reflected signal at different times, calculating a blood flow velocity vector in the subject based on a plurality of images at different times in which the image portion indicating the tissue shape of the subject is removed, identifying a boundary surface between a tissue of the subject and a blood flow based on a recognition result of the shape recognition unit, and calculating or correcting the blood flow velocity by applying a consistent condition under a fluid mechanics on the boundary surface.
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Specification