Ultrasonic blood vessel measurement apparatus and method
First Claim
1. A method of operating a computing device to re-measure a tissue structure measurement from an image, the method comprising:
- capturing a first image that includes tissue structure features;
accepting first operator input indicating a location of a layer of tissue in a measurement region within the first image for use in determining an intima-media thickness (IMT) measurement of the tissue structure;
determining an orientation of the layer of tissue relative to one or more boundaries of the measurement region;
measuring the IMT of the tissue structure using the first operator input;
storing at least a portion of the first operator input and information with respect to the first image, wherein the information with respect to the first image comprises measurement parameters and record data;
capturing a second image that includes at least a portion of the tissue structure features captured in the first image;
accepting second operator input indicating a location of the layer of tissue in the second image;
registering the second image, wherein registering the second image comprises aligning the layer of tissue in the second image based on the orientation of the layer of tissue in the first image and on the second operator input; and
re-measuring IMT of the tissue structure in the registered second image using the second operator input and the first image measurement parameters and record data.
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Accused Products
Abstract
An apparatus and method for determining the apparent intima-media thickness (IMT) of arteries through acquisition and analysis of ultrasound images comprising an array of pixel intensities. A datum, or datums, may be established across multiple columns of pixels bounding the portion of the image containing either the lumen/intima boundary, the media/adventitia boundary, or both. The datums may be approximate the shape of one more of the lumen, intima, media, and adventitia. Within a bounded portion of the image, a method may search for intensity gradients having characteristics indicating the gradients represent probable locations of the lumen/intima and media/adventitia boundaries. An IMT measurement is calculated based on the location of the lumen/intima and media/adventitia boundaries. An IMT measurement may be adjusted for sloping or tapering of an artery wall.
57 Citations
32 Claims
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1. A method of operating a computing device to re-measure a tissue structure measurement from an image, the method comprising:
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capturing a first image that includes tissue structure features; accepting first operator input indicating a location of a layer of tissue in a measurement region within the first image for use in determining an intima-media thickness (IMT) measurement of the tissue structure; determining an orientation of the layer of tissue relative to one or more boundaries of the measurement region; measuring the IMT of the tissue structure using the first operator input; storing at least a portion of the first operator input and information with respect to the first image, wherein the information with respect to the first image comprises measurement parameters and record data; capturing a second image that includes at least a portion of the tissue structure features captured in the first image; accepting second operator input indicating a location of the layer of tissue in the second image; registering the second image, wherein registering the second image comprises aligning the layer of tissue in the second image based on the orientation of the layer of tissue in the first image and on the second operator input; and re-measuring IMT of the tissue structure in the registered second image using the second operator input and the first image measurement parameters and record data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A diagnostic ultrasound system providing re-measurement of a tissue structure from an image, the system comprising:
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an image capturing device configured to provide first and second images that include the tissue structure features; a user interface configured to accept first operator input regarding a location of a layer of tissue in a measurement region of the first image for use in measurement of an intima-media thickness (IMT) of the tissue structure, wherein the user interface is further configured to receive second operator input regarding a location of the layer of tissue in the second image; a memory having data structures that include one or more executable modules, wherein the memory is configured to store at least a portion of the first operator input and measurement parameters and record information with respect to the first image; and a processor, wherein the processor is configured to execute modules stored on the memory for identifying one or more tissue structure features in the first image, measuring an IMT of the tissue structure in the first image using the first operator input, determining an orientation of the layer of tissue in the image relative to one or more boundaries of the measurement region; registering the second image, wherein registering the second image includes aligning the layer of tissue in the second image based on the second operator input and on the orientation of the layer of tissue in the first image, and measuring an IMT of the tissue structure in the registered second image using the measurement parameters and record information with respect to the first image. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method of operating a computer system to provide tissue structure measurements from a series of images, the method comprising:
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identifying a datum corresponding to a location of a layer of tissue within a first image of the series of images; measuring an intima-media thickness (IMT) of tissue appearing in the first image using the datum; determining an orientation of the layer of tissue in the first image; registering a successive second image of the series of images, wherein registering the second image includes aligning the layer of tissue in the second image based on the orientation of the layer of tissue in the first image; and adapting the datum to revise the measurement of the IMT of the tissue in the first image using an IMT measurement of the tissue in the second image. - View Dependent Claims (29, 30, 31, 32)
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Specification