Method and apparatus for applying synthetic aperture focusing te

Details Method and apparatus for applying synthetic aperture focusing te Method and apparatus for applying synthetic aperture focusing te

1991-12-05

1993-02-16

Jaworski, Francis

Surgery

Truss

Pad

12866101, A61B 812

Patent

active

051861771

ABSTRACT:
A catheter based ultrasound imaging system is disclosed which is capable of providing images of coronary vessels at frequencies near 50 MHz. The catheter based system implements a Synthetic Aperture Focusing Technique (SAFT) by scanning through a miniature ultrasound transducer array to sequentially select and fully multiplex a subset of array elements to operate as a sub-aperture of the total synthetic aperture on each firing; thus reducing the number of required catheter interconnections. Each synthetic aperture array is dynamically and retrospectively focused to accommodate precision imaging at high frequency without conventional signal to noise losses.

REFERENCES:
patent: 4841977 (1989-06-01), Griffith et al.
patent: 4911170 (1990-03-01), Thomas et al.
patent: 4917097 (1990-04-01), Proudian et al.
patent: 5027659 (1991-07-01), Bele et al.

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