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US 2019/0099162 A1Published application
Extracting a cardiac-cycle signal from echocardiogram data
AssigneeGeneral Electric Company
InventorRenato Keshet
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Abstract
The present approach relates to extracting a heart cycle signal from ultrasound sequences (e.g., echocardiograms) without complex spatial image processing and without finding or assuming the knowledge of the position of heart reference points. The present heart cycle signal is computed by determining temporal changes in low-resolution versions of the echocardiographic frames, such as temporal information of the heartbeat.
Claims20
A method for generating a cardiac-cycle signal, comprising:
- accessing or acquiring an echocardiogram comprising a first sequence of image frames;
- resizing each image frame of the first sequence to generate a second sequence resized image frames;
- generating a first matrix in which one of its dimensions corresponds to a sequence of flattened versions of the resized image frames;
- deriving from the first matrix at least a second matrix, wherein the second matrix is a unitary matrix whose columns or rows are equal to or approximations of singular vectors of the first matrix;
- generating the cardiac-cycle signal using one singular vector of the second matrix;
- and
- displaying the cardiac-cycle signal on a monitor.
4 more elements
An ultrasound imaging system, comprising:
- processing circuitry configured to:
- acquire an echocardiogram comprising a first sequence of image frames;
- resize each image frame of the first sequence to generate a second sequence resized image frames;
- generate a first matrix in which one of its dimensions corresponds to a sequence of flattened versions of the resized image frames;
- derive from the first matrix at least a second matrix, wherein the second matrix is a unitary matrix whose columns or rows are equal to or approximations of singular vectors of the first matrix;
- generate the cardiac-cycle signal using one singular vector of the second matrix;
- and
- display the cardiac-cycle signal on a monitor.
5 more elements
Dependencies are inferred from the claim text.