Area Triangulation Method for Automatic Detection of Venous Emptying Maneuvers
Braz. arch. biol. technol
;
62: e19180078, 2019. tab, graf
Artigo
em Inglês
| LILACS
| ID: biblio-1001427
ABSTRACT
Abstract Venous refilling time (VRT) can diagnose the presence of venous diseases in lower limbs. In order to calculate VRT it is necessary to determine the End of the Emptying Maneuvers (EEM). First Derivative Method (FDM) can be employed for automatic detection of the EEM, but its sensitivity to artifacts and noise can degrade its performance. In contrast, studies report that Area Triangulation Method (ATM) evinces effectiveness in biosignals point finding. This work compares the exactness of ATM and FDM for recognition of the EEM. The annotations made by 3 trained human observers on 37 photoplethysmography records were used as a reference. Bland-Altman graphics supported the analysis of agreement among human observers and methods, which was complemented with Analysis of variance and Multiple Comparisons statistical tests. Results showed that ATM is more accurate than FDM for automatic detection of the EEM, with statistically significant differences (p-value < 0.01).
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Insuficiência Venosa
/
Extremidade Inferior
Tipo de estudo:
Estudo diagnóstico
Idioma:
Inglês
Revista:
Braz. arch. biol. technol
Assunto da revista:
Biologia
Ano de publicação:
2019
Tipo de documento:
Artigo
País de afiliação:
Brasil
/
Cuba
Instituição/País de afiliação:
Federal University of Rio Grande do Norte/BR
/
Universidad de Oriente/CU
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