METHOD AND SYSTEM FOR SCREENING OF ATRIAL FIBRILLATION
First Claim
1. A method for detecting presence of atrial fibrillation, the method comprising:
- acquiring a plethysmographic waveform;
calculating an autocorrelation function of the plethysmographic waveform;
computing at least one feature from the autocorrelation function; and
analyzing, using a processor, the at least one feature from the autocorrelation function to determine presence of atrial fibrillation.
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Accused Products
Abstract
The present disclosure provides a description of various methods and systems associated with determining possible presence of Atrial Fibrillation (AF). In one example, a camera of a client device, such as a mobile phone, may acquire a series of images of a body part of a user. A plethysmographic waveform may be generated from the series of images. An autocorrelation function may be calculated from the waveform, and a number of features may be computed from the autocorrelation function. Based on an analysis of the features, a determination may be made about whether the user is experience AF. Such determined may be output to a display of the mobile phone for user review.
14 Citations
17 Claims
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1. A method for detecting presence of atrial fibrillation, the method comprising:
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acquiring a plethysmographic waveform; calculating an autocorrelation function of the plethysmographic waveform; computing at least one feature from the autocorrelation function; and analyzing, using a processor, the at least one feature from the autocorrelation function to determine presence of atrial fibrillation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for detecting presence of atrial fibrillation, the system comprising:
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a sensor for acquiring a plethysmographic waveform; a processor configured for calculating an autocorrelation function of the plethysmographic waveform, computing at least one feature from the autocorrelation function, and analyzing the at least one feature to determine presence of atrial fibrillation.
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17. A method of detecting presence of atrial fibrillation at a client device, the method comprising:
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capturing a series of images of at least a portion of a user; generating a plethysmographic waveform from the series of images; calculating an autocorrelation function of the plethysmographic waveform; computing at least one feature from the autocorrelation function; and analyzing, using a processor, the at least one feature from the autocorrelation function to determine presence of atrial fibrillation.
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Specification