Model-based vascular elastography improves the detection of flow-induced carotid artery remodeling in mice.
Sci Rep
; 7(1): 12081, 2017 09 21.
Article
en En
| MEDLINE
| ID: mdl-28935983
ABSTRACT
Increased arterial thickness measured with ultrasound correlates with future cardiovascular events, but conventional ultrasound imaging techniques cannot distinguish between intima, media, or atherosclerotic plaque in the carotid artery. In this work, we evaluated how well vascular elastography can detect intimal changes in a mouse model of carotid remodeling. We ligated the left external and internal branches of the carotid artery of male FVB mice and performed sham operations for 2 weeks. High-resolution ultrasound imaging accurately detected lower blood velocities and low blood volume flow in the carotid arteries after ligation in FVB mice. However, ultrasound could not detect differences in the carotid wall even at 2 weeks post-surgery. The Young's modulus was measured based on displacements of the carotid artery wall, and Young's modulus was 2-fold greater in shams at 1 week post ligation, and 3-fold greater 2 weeks after ligation. Finally, the higher Young's modulus was most associated with higher intimal thickness but not medial or adventitial thickness as measured by histology. In conclusion, we developed a robust ultrasound-based elastography method for early detection of intimal changes in small animals.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Arterias Carótidas
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Diagnóstico por Imagen de Elasticidad
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Módulo de Elasticidad
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Remodelación Vascular
Tipo de estudio:
Diagnostic_studies
/
Screening_studies
Límite:
Animals
Idioma:
En
Año:
2017
Tipo del documento:
Article