Method and apparatus for analyzing and interpreting electrocardiograms using spectro-temporal mapping
US4947857A · kind A · utility
120Cited by
14References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1989 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | Feb 1, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/7257
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Method and apparatus for analyzing ECG signal data for diagnostic purposes by performing an incrementally moving, short window FFT analysis to produce a set of spectral templates representative of the spectral frequency content of the ECG at each window position. The spectral templates may be displayed as a representation of a three dimensional surface or mathematically analyzed. The changes in the shape of the templates or surface with time represent a change in the spectrum, which are shown to be an indication of abnormalities in the heart.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.