Design of sparse annular arrays for high-frequency imaging

Jeremy A. Brown, Geoffrey R. Lockwood

Producción científica: Capítulo en Libro/Reporte/Acta de conferenciaContribución a la conferencia

7 Citas (Scopus)

Resumen

The design of a 35 MHz sparse annular array is described The array -was designed to provide < 125 μm resolution over an 8 mm imaging depth, while suppressing the secondary lobes to more than 60 dB below the main beam. The array has 10 equal-area elements and a 5 mm outer diameter. The array was designed with 110 μm equals-width kerfs, resulting in only a 50% active aperture. The simulated performance of the array was compared to a 5 mm diameter, 10-element array operating with a 100% active aperture. The -6 dB beamwidths of the sparse and full arrays were found to increase smoothly from 61 microns at a depth of 6 mm to 125 microns at 14 mm. For the sparse array, secondary lobes were suppressed by more than 60 dB over the entire 8 mm region, whereas the fully active array produced secondary lobes that were suppressed to -60 dB lobes only at depths greater than 10 mm.

Idioma originalEnglish
Título de la publicación alojada2005 IEEE Ultrasonics Symposium
Páginas125-128
Número de páginas4
DOI
EstadoPublished - 2005
Publicado de forma externa
Evento2005 IEEE Ultrasonics Symposium - Rotterdam, Netherlands
Duración: sep. 18 2005sep. 21 2005

Serie de la publicación

NombreProceedings - IEEE Ultrasonics Symposium
Volumen1
ISSN (versión impresa)1051-0117

Conference

Conference2005 IEEE Ultrasonics Symposium
País/TerritorioNetherlands
CiudadRotterdam
Período9/18/059/21/05

ASJC Scopus Subject Areas

  • Acoustics and Ultrasonics

Huella

Profundice en los temas de investigación de 'Design of sparse annular arrays for high-frequency imaging'. En conjunto forman una huella única.

Citar esto

Brown, J. A., & Lockwood, G. R. (2005). Design of sparse annular arrays for high-frequency imaging. En 2005 IEEE Ultrasonics Symposium (pp. 125-128). Artículo 1602812 (Proceedings - IEEE Ultrasonics Symposium; Vol. 1). https://doi.org/10.1109/ULTSYM.2005.1602812