Noninvasive simultaneous assessment of wall shear rate and wall distension in carotid arteries.
Ultrasound Med Biol
; 32(11): 1661-70, 2006 Nov.
Article
en En
| MEDLINE
| ID: mdl-17112953
ABSTRACT
A novel technique has been developed for the noninvasive real-time simultaneous assessment of both blood velocity profile and wall displacements in human arteries. The novel technique is based on the use of two ultrasound beams, one set at optimal angle for wall motion measurements and the other for blood velocity profile measurements. The technique was implemented on a linear array probe divided into two subapertures. A modified commercial ultrasound machine and a custom PC board based on a high-speed digital signal processor was used to process the quadrature demodulated echo signals and display results in realtime. Flow phantom experiments demonstrated the validity of the technique, providing wall shear rate (WSR) estimates within 10% of the theoretical values. The system was also tested in the common carotid arteries of 16 healthy volunteers (age 30 to 53 y). Results of simultaneous diameter distension and WSR measurements were in agreement with published data.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Arteria Carótida Común
Límite:
Adult
/
Humans
/
Middle aged
Idioma:
En
Revista:
Ultrasound Med Biol
Año:
2006
Tipo del documento:
Article
País de afiliación:
Italia