Ultrasound imaging system with a high lateral resolution

Details Ultrasound imaging system with a high lateral resolution Ultrasound imaging system with a high lateral resolution

2008-04-22

2008-04-22

Winakur, Eric F. (Department: 3768)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S443000

Reexamination Certificate

active

10512492

ABSTRACT:
The invention relates to an ultrasound imaging system for forming an echographic image of a medium, which system includes a set [REC] of transducer elements [EL] which are operative in a transmission mode and in a reception mode for ultrasound waves, construction means [REB] for constructing echographic signals on the basis of signals [S[1] . . . S[N]] received on the transducer elements [EL], display means [DIS] which are coupled to the construction means [REB] in order to display an image of the medium formed by means of the echographic signals. The construction means [REB] are such that in so-called exclusion zones, in which a coherent reflector is detected and which are determined by determination means [DET], the reception delays [D] are estimated in a manner [INT] other than that [CORR] used for the other zones. The calculation [CAL] of echographic signals is then carried out on the basis of the estimated delays [D[Z],Di[Z}}. The invention enables a correction of phase aberrations and nevertheless offers an excellent lateral resolution, notably in the case of point coherent reflectors.

REFERENCES:
patent: 5184623 (1993-02-01), Mallart
patent: 5348013 (1994-09-01), Kanda et al.
patent: 6120450 (2000-09-01), Li

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