Impact of Image Spatial, Temporal, and Velocity Resolutions on Cardiovascular Indices Derived from Color-Doppler Echocardiography

Quantitative processing of color-Doppler echocardiographic images has substantially improved noninvasive assessment of cardiac physiology. Many indices are computed from the velocity fields derived either from color-Doppler tissue imaging (DTI), such as acceleration, strain and strain-rate, or from...

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Autores: Rojo-Álvarez, José Luis, Bermejo, Javier, Rodríguez González, Ana Belén, Martínez Fernández, A, Yotti, R, García Fernández, Miguel Ángel, Antoranz, José Carlos
Tipo de recurso: artículo
Fecha de publicación:2009
País:España
Institución:Universidad Rey Juan Carlos
Repositorio:BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
OAI Identifier:oai:burjcdigital.urjc.es:10115/2488
Acceso en línea:http://hdl.handle.net/10115/2488
Access Level:acceso abierto
Palabra clave:Telecomunicaciones
3325 Tecnología de las Telecomunicaciones
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spelling Impact of Image Spatial, Temporal, and Velocity Resolutions on Cardiovascular Indices Derived from Color-Doppler EchocardiographyRojo-Álvarez, José LuisBermejo, JavierRodríguez González, Ana BelénMartínez Fernández, AYotti, RGarcía Fernández, Miguel ÁngelAntoranz, José CarlosTelecomunicaciones3325 Tecnología de las TelecomunicacionesQuantitative processing of color-Doppler echocardiographic images has substantially improved noninvasive assessment of cardiac physiology. Many indices are computed from the velocity fields derived either from color-Doppler tissue imaging (DTI), such as acceleration, strain and strain-rate, or from blood-flow color-Doppler, such as intracardiac pressure gradients (ICPG). All of these indices are dependent on the finite resolution of the ultrasound scanner. Therefore, we developed an image-dependent method for assessing the influence of temporal, spatial, and velocity resolutions, on cardiovascular parameters derived from velocity images. In order to focus our study on the spatial, temporal, and velocity resolutions of the digital image, we did not consider the effect of other sources of noise such as the interaction between ultrasound and tissue. A simple first-order Taylor's expansion was used to establish the functional relationship between the acquired image velocity and the calculated cardiac index. Resolutions were studied on: (a) myocardial acceleration, strain, and strain-rate from DTI, and (b) ICPG from blood-flow color-Doppler. The performance of Taylor's-based error bounds (TBEB) was demonstrated on simulated models and illustrated on clinical images. Velocity and temporal resolution were highly relevant for the accuracy of DTI-derived parameters and ICPGs. TBEB allow to assess the effects of ideal digital image resolution on quantitative cardiovascular indices derived from velocity measurements obtained by cardiac imaging techniques.Teoría de la Señal y Comunicaciones200920092009info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10115/2488reponame:BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlosinstname:Universidad Rey Juan CarlosInglésAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:burjcdigital.urjc.es:10115/24882026-06-24T12:48:17Z
dc.title.none.fl_str_mv Impact of Image Spatial, Temporal, and Velocity Resolutions on Cardiovascular Indices Derived from Color-Doppler Echocardiography
title Impact of Image Spatial, Temporal, and Velocity Resolutions on Cardiovascular Indices Derived from Color-Doppler Echocardiography
spellingShingle Impact of Image Spatial, Temporal, and Velocity Resolutions on Cardiovascular Indices Derived from Color-Doppler Echocardiography
Rojo-Álvarez, José Luis
Telecomunicaciones
3325 Tecnología de las Telecomunicaciones
title_short Impact of Image Spatial, Temporal, and Velocity Resolutions on Cardiovascular Indices Derived from Color-Doppler Echocardiography
title_full Impact of Image Spatial, Temporal, and Velocity Resolutions on Cardiovascular Indices Derived from Color-Doppler Echocardiography
title_fullStr Impact of Image Spatial, Temporal, and Velocity Resolutions on Cardiovascular Indices Derived from Color-Doppler Echocardiography
title_full_unstemmed Impact of Image Spatial, Temporal, and Velocity Resolutions on Cardiovascular Indices Derived from Color-Doppler Echocardiography
title_sort Impact of Image Spatial, Temporal, and Velocity Resolutions on Cardiovascular Indices Derived from Color-Doppler Echocardiography
dc.creator.none.fl_str_mv Rojo-Álvarez, José Luis
Bermejo, Javier
Rodríguez González, Ana Belén
Martínez Fernández, A
Yotti, R
García Fernández, Miguel Ángel
Antoranz, José Carlos
author Rojo-Álvarez, José Luis
author_facet Rojo-Álvarez, José Luis
Bermejo, Javier
Rodríguez González, Ana Belén
Martínez Fernández, A
Yotti, R
García Fernández, Miguel Ángel
Antoranz, José Carlos
author_role author
author2 Bermejo, Javier
Rodríguez González, Ana Belén
Martínez Fernández, A
Yotti, R
García Fernández, Miguel Ángel
Antoranz, José Carlos
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Telecomunicaciones
3325 Tecnología de las Telecomunicaciones
topic Telecomunicaciones
3325 Tecnología de las Telecomunicaciones
description Quantitative processing of color-Doppler echocardiographic images has substantially improved noninvasive assessment of cardiac physiology. Many indices are computed from the velocity fields derived either from color-Doppler tissue imaging (DTI), such as acceleration, strain and strain-rate, or from blood-flow color-Doppler, such as intracardiac pressure gradients (ICPG). All of these indices are dependent on the finite resolution of the ultrasound scanner. Therefore, we developed an image-dependent method for assessing the influence of temporal, spatial, and velocity resolutions, on cardiovascular parameters derived from velocity images. In order to focus our study on the spatial, temporal, and velocity resolutions of the digital image, we did not consider the effect of other sources of noise such as the interaction between ultrasound and tissue. A simple first-order Taylor's expansion was used to establish the functional relationship between the acquired image velocity and the calculated cardiac index. Resolutions were studied on: (a) myocardial acceleration, strain, and strain-rate from DTI, and (b) ICPG from blood-flow color-Doppler. The performance of Taylor's-based error bounds (TBEB) was demonstrated on simulated models and illustrated on clinical images. Velocity and temporal resolution were highly relevant for the accuracy of DTI-derived parameters and ICPGs. TBEB allow to assess the effects of ideal digital image resolution on quantitative cardiovascular indices derived from velocity measurements obtained by cardiac imaging techniques.
publishDate 2009
dc.date.none.fl_str_mv 2009
2009
2009
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10115/2488
url http://hdl.handle.net/10115/2488
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
instname:Universidad Rey Juan Carlos
instname_str Universidad Rey Juan Carlos
reponame_str BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
collection BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
repository.name.fl_str_mv
repository.mail.fl_str_mv
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