Detection and grouping analysis of cardiac cycles
First Claim
1. Apparatus for measuring the physiology of the heart, comprising:
- means for detecting a series of cardiac cycles of a subject;
means for storing the patterns of the series of cardiac cycles detected by the means for detecting;
means for performing correlation analysis of cardiac cycles in the series of cardiac cycles; and
means for classifying groupings of cardiac cycles, the means for classifying comprisingmeans for identifying a first template cardiac cycle,means for forming a first selected group of cardiac cycles from among those of the series of cardiac cycles having at least a first preselected degree of correlation with the first template cardiac cycle, and leaving a first ungrouped group of cardiac cycles having a correlation less than the first preselected degree of correlation,means for selecting a second template cardiac cycle from the first ungrouped group of cardiac cycles, andmeans for forming a second group of cardiac cycles from among the first ungrouped group of cardiac cycles having at least a second preselected degree of correlation with the second template cardiac cycle, and leaving a second ungrouped group of cardiac cycles having a correlation less than the second preselected degree of correlation.
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Abstract
The physiology of the heart is analyzed by measuring a series of cardiac cycles using a biomagnetometer or other device capable of detecting cardiac cycles, classifying the cardiac cycles into groups according to the degree of correlation with a template cardiac cycle for the group, and associating the cardiac cycles of the groups with an origin location within the subject. The classifying operation preferably includes selecting a template cardiac cycle against which other previously ungrouped cardiac cycles are to be correlated, performing a correlation analysis of all previously ungrouped cardiac cycles with the template cardiac cycle, and associating with the template cardiac cycle all previously ungrouped cardiac cycles having at least a preselected degree of correlation, to form a group.
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Citations
18 Claims
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1. Apparatus for measuring the physiology of the heart, comprising:
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means for detecting a series of cardiac cycles of a subject; means for storing the patterns of the series of cardiac cycles detected by the means for detecting; means for performing correlation analysis of cardiac cycles in the series of cardiac cycles; and means for classifying groupings of cardiac cycles, the means for classifying comprising means for identifying a first template cardiac cycle, means for forming a first selected group of cardiac cycles from among those of the series of cardiac cycles having at least a first preselected degree of correlation with the first template cardiac cycle, and leaving a first ungrouped group of cardiac cycles having a correlation less than the first preselected degree of correlation, means for selecting a second template cardiac cycle from the first ungrouped group of cardiac cycles, and means for forming a second group of cardiac cycles from among the first ungrouped group of cardiac cycles having at least a second preselected degree of correlation with the second template cardiac cycle, and leaving a second ungrouped group of cardiac cycles having a correlation less than the second preselected degree of correlation. - View Dependent Claims (2, 3, 4, 5)
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6. Apparatus for measuring the physiology of the heart, comprising:
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biomagnetometer means for detecting magnetic fields produced by a beating heart of a subject; means for storing the patterns of a series of cardiac cycles detected by the biomagnetometer means; means for performing correlation analysis of cardiac cycles in the series of cardiac cycles; and means for classifying the series of cardiac cycles into a plurality of groups, the means for classifying including means for identifying each group, including means for identifying a group template cardiac cycle, and means for forming a group of cardiac cycles from among those of the series of cardiac cycles not previously classified into a group and having at least a preselected degree of correlation with the template cardiac cycle. - View Dependent Claims (7, 8, 9)
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10. A method for measuring the physiology of the heart, comprising the steps of:
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providing an apparatus that detects cardiac cycles of a subject; detecting magnetic signals corresponding to a time sequence of a plurality of cardiac cycles of a subject, utilizing the apparatus; and classifying the series of cardiac cycles into a number of groups according to the degree of correlation of each cardiac cycle with a template cardiac cycle for each group. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification