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Abstract:

Recent reports have shown that the carotid artery wall had significant movements not only in the radial but also in the longitudinal direction during the cardiac cycle. Accordingly, the idea that longitudinal elongations could be systematically neglected for compliance estimations became controversial. Assuming a dynamic change in vessel length, the standard measurement of cross-sectional compliance can be revised. In this work, we propose to estimate a volumetric compliance based on continuous measurements of carotid diameter and intima-media thickness (IMT) from B-mode ultrasound sequences. Assuming the principle of conservation of the mass of wall volume (compressibility equals zero), a temporal longitudinal elongation can be calculated to estimate a volumetric compliance. Moreover, elongations can also be estimated allowing small compressibility factors to model some wall leakage. The cross-sectional and the volumetric compliance were estimated in 45 healthy volunteers and 19 asymptomatic patients. The standard measurement underestimated the volumetric compliance by 25% for young volunteers (p<0.01) and 17% for patients (p<0.05). When compressibility factors different from zero were allowed, volunteers and patients reached values of 9% and 4%, respectively. We conclude that a simultaneous assessment of carotid diameter and IMT can be employed to estimate a volumetric compliance incorporating a longitudinal elongation. The cross-sectional compliance, that neglects the change in vessel length, underestimates the volumetric compliance. © 2015 Institute of Physics and Engineering in Medicine.

Registro:

Documento: Artículo
Título:Continuous assessment of carotid intima-media thickness applied to estimate a volumetric compliance using B-mode ultrasound sequences
Autor:Pascaner, A.F.; Craiem, D.; Casciaro, M.E.; Danielo, R.; Graf, S.; Guevara, E.
Filiación:Facultad de Ingeniería y Ciencias Exactas y Naturales, Universidad Favaloro Buenos Aires, Argentina
CONICET, Buenos Aires, Argentina
Hospital Universitario de la Fundación Favaloro, Unidad de Ecocardiografía y Doppler Vascular Buenos Aires, Argentina
Palabras clave:arterial stiffness; carotid artery; compressibility; cross-sectional compliance; distensibility; arterial wall thickness; automated pattern recognition; carotid artery; echography; female; human; male; middle aged; organ size; young adult; Carotid Arteries; Carotid Intima-Media Thickness; Female; Humans; Male; Middle Aged; Organ Size; Pattern Recognition, Automated; Young Adult
Año:2015
Volumen:36
Número:3
Página de inicio:397
Página de fin:407
DOI: http://dx.doi.org/10.1088/0967-3334/36/3/397
Título revista:Physiological Measurement
Título revista abreviado:Physiol. Meas.
ISSN:09673334
CODEN:PMEAE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09673334_v36_n3_p397_Pascaner

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Citas:

---------- APA ----------
Pascaner, A.F., Craiem, D., Casciaro, M.E., Danielo, R., Graf, S. & Guevara, E. (2015) . Continuous assessment of carotid intima-media thickness applied to estimate a volumetric compliance using B-mode ultrasound sequences. Physiological Measurement, 36(3), 397-407.
http://dx.doi.org/10.1088/0967-3334/36/3/397
---------- CHICAGO ----------
Pascaner, A.F., Craiem, D., Casciaro, M.E., Danielo, R., Graf, S., Guevara, E. "Continuous assessment of carotid intima-media thickness applied to estimate a volumetric compliance using B-mode ultrasound sequences" . Physiological Measurement 36, no. 3 (2015) : 397-407.
http://dx.doi.org/10.1088/0967-3334/36/3/397
---------- MLA ----------
Pascaner, A.F., Craiem, D., Casciaro, M.E., Danielo, R., Graf, S., Guevara, E. "Continuous assessment of carotid intima-media thickness applied to estimate a volumetric compliance using B-mode ultrasound sequences" . Physiological Measurement, vol. 36, no. 3, 2015, pp. 397-407.
http://dx.doi.org/10.1088/0967-3334/36/3/397
---------- VANCOUVER ----------
Pascaner, A.F., Craiem, D., Casciaro, M.E., Danielo, R., Graf, S., Guevara, E. Continuous assessment of carotid intima-media thickness applied to estimate a volumetric compliance using B-mode ultrasound sequences. Physiol. Meas. 2015;36(3):397-407.
http://dx.doi.org/10.1088/0967-3334/36/3/397