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US 9,039,621 B2Granted
Non-invasive ultrasonic gingival tissue diagnosis
AssigneeThe United States of America National Institutes of Health (NIH), U.S. Dept. of Health and Human Services (DHHS), NIH Division of Extramural Inventions and Technology Resources (DEITR)
InventorsOsama M. Mukdadi, Ahmed M. Mahmoud, Eros S. Chaves, Richard Crout
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Abstract
Disclosed are various embodiments for echoperiodontal imaging. In one embodiment, a system includes a transducer configured to transmit a series of ultrasonic signals at a plurality of corresponding locations along soft tissue of a jaw and receive a plurality of echo signals; and an imaging system controller configured to obtain a plurality of echo signal data of the soft tissue and a plurality of transducer positions, where each echo signal data corresponds to one of the plurality of transducer position.
Claims18
A system for echoperiodontal imaging of gingival tissue, comprising:
- a transducer adapted to:
- be positioned along a plurality of locations of gingival tissue for a region of interest of a jaw;
- transmit a series of ultrasonic signals at the plurality of locations of the gingival tissue for the region of interest of the jaw, and
- receive a plurality of echo signals, each echo signal corresponding to one of the transmitted ultrasonic signals at one of the plurality of locations of the gingival tissue;
- and
- imaging system computer hardware configured to:
- coordinate transmission of the series of ultrasonic signals and reception of the corresponding echo signals,
- obtain a plurality of echo signal data of the gingival tissue and a plurality of transducer positions, where each echo signal data corresponds to one of the plurality of transducer positions and is derived from the received plurality of echo signals;
- dividing a region of interest in the echo signals of the plurality of corresponding locations into a plurality of two-dimensional kernels comprising sub-regions of the region of interest;
- convert each of the plurality of two-dimensional kernels into a plurality of one-dimensional signal vectors from neighborhood pixels within a two-dimensional kernel and the one-dimensional signal vectors are used to extract parametric values in a time-domain, a frequency-domain, and a wavelet-domain;
- and
- reconstruct at least a two-dimensional image of a portion of the gingival tissue of the jaw based upon the obtained echo signal data, the plurality of transducer positions, and the parametric values from at least the time-domain, the frequency-domain, and the wavelet-domain, wherein the at least a two-dimensional image comprises a parametric ultrasound image with pixel values represented using the parametric values from the time-domain, the frequency-domain, and the wavelet-domain.
9 more elements
A method for echoperiodontal imaging, comprising:
- positioning a transducer adjacent to a jaw of a subject;
- transmitting a series of ultrasonic signals at a plurality of corresponding locations along the jaw of the subject;
- receiving a plurality of echo signals, each echo signal corresponding to one of the transmitted ultrasonic signals;
- obtaining a plurality of echo signal data and a plurality of corresponding transducer positions, where each echo signal data corresponds to one of the plurality of transducer positions and is derived from the received plurality of echo signals;
- dividing a region of interest in the echo signals of the plurality of corresponding locations into a plurality of two-dimensional kernels comprising sub-regions of the region of interest;
- for each one of the plurality of two-dimensional kernels, converting a two-dimensional kernel into a plurality of one-dimensional signal vectors from neighborhood pixels within the two-dimensional kernel;
- extracting parameters in a time-domain, a frequency-domain, and a wavelet-domain using the one-dimensional signal vectors;
- and
- reconstructing at least two-dimensional image data of a portion of soft tissue adjacent to the jaw for display on a display device based upon the obtained plurality of echo signal data, the plurality of corresponding transducer positions, and parametric values from the time-domain, the frequency-domain, and the wavelet-domain, wherein the at least two-dimensional image data comprises a parametric ultrasound image with pixel values represented using the parametric values from the time-domain, the frequency-domain, and the wavelet-domain.
6 more elements
A method for echoperiodontal imaging, comprising:
- transmitting a series of ultrasonic signals at a plurality of corresponding locations of gingival tissue along a region of interest of a jaw of a subject;
- receiving a plurality of echo signals, each echo signal corresponding to one of the transmitted ultrasonic signals at one of the plurality of corresponding locations of gingival tissue;
- dividing the region of interest in the echo signals into a plurality of two-dimensional kernels comprising sub-regions of the region of interest;
- for each one of the plurality of two-dimensional kernels, converting a two-dimensional kernel into a plurality of one-dimensional signal vectors from neighborhood pixels within the two-dimensional kernel;
- extracting parameters in a time-domain, frequency-domain, and wavelet-domain using the one-dimensional signal vectors;
- and
- constructing parametric ultrasound images by calculating and assigning a value of each parameter in any of the time, frequency, and wavelet domains to a pixel representing a center of the two-dimensional kernel.
4 more elements
Dependencies are inferred from the claim text.