Real-time phased array imaging using digital beam forming and autonomous channel control

Author

O´Donnell, M. ; Engeler, W.E. ; Pedicone, J.T. ; Itani, A.M. ; Noujaim, S.E. ; Dunki-Jacobs, R.J. ; Leue, W.M. ; Chalek, C.L. ; Smith, L.S. ; Piel, J.E. ; Harris, R.L. ; Welles, K.B. ; Hinrichs, W.L.

Author_Institution

General Electr. Corp. Res. & Dev. Center, Schenectady, NY, USA

fYear

1990

fDate

4-7 Dec 1990

Firstpage

1499

Abstract

The authors designed and constructed a real-time phased-array imaging system for medical applications based on the principles of digital beam formation and autonomous channel control. The system is capable of high-precision steering, dynamic apodization, dynamic focusing, and highly accurate beamforming using sampling rates close to the Nyquist rate over the medical diagnostic frequency range. All controls and signal processing needed for a single channel of the array imager have been integrated into a single custom VLSI circuit. The authors describe the basic principles embodied in this chip

Keywords

acoustic imaging; biomedical electronics; biomedical ultrasonics; Nyquist rate; autonomous channel control; digital beam forming; dynamic apodization; medical US imaging; real-time phased-array imaging system; single custom VLSI circuit; Array signal processing; Biomedical equipment; Control systems; Focusing; Image sampling; Medical control systems; Medical services; Phased arrays; Real time systems; Signal sampling;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1990. Proceedings., IEEE 1990

Conference_Location

Honolulu, HI

Type

conf

DOI

10.1109/ULTSYM.1990.171616

Filename

171616