P Wave Delineation Using Spatially Projected Leads From Wavelet Transform Loops

• Type: Article in International Conference Proceedings Book
• Date: 2010

Authors

Almeida, R (Author) Other; Martinez, JP (Author) Other; Rocha, AP (Author) FCUP; Laguna, P (Author) Other

Conference proceedings International

Title: COMPUTING IN CARDIOLOGY 2010, VOL 37

Pages: 1003-1006

37th Annual Conference of the Computing-in-Cardiology

Belfast, NORTH IRELAND, SEP 26-29, 2010

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 5 Citations

Scientific classification

FOS: Engineering and technology > Environmental biotechnology

Other information

Authenticus ID: P-007-Y11

Abstract (EN): A previously proposed automatic delineation strategy for multilead (ML) location of wave boundaries is now extended to P wave boundaries. The method obtains a transformed lead by projecting the wavelet transform spatial loop into a direction that optimizes the SNR. The performance was compared with single lead delineation (SL) and with the global marks obtained by post- processing rules (SLR) calculating the Sensitivity, mean and standard deviation [S(%), m +/- s (ms)] respectively for onset| end location errors. Validation is performed over CSE database files obtaining, using 3D loops [100,- 10.2 +/- 15.0] | [100, 7.8 +/- 14.2], and using 2D loops [96,- 2.4 +/- 7.4] | [96, 5.9 +/- 7.0]. SLR achieved [85, 2.1 +/- 5.6] | [89, 1.8 +/- 6.7], with SL producing always higher s values in one or both boundaries. We conclude that ML strategy is appropriate for P wave delineation, with higher S that SLR, and 2D loops are sufficient, allowing a more efficient processing when compared to SLR.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4