Control system that distinguishes between imaging and nonimaging

Details Control system that distinguishes between imaging and nonimaging Control system that distinguishes between imaging and nonimaging

1996-05-08

1997-08-05

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

73626, 73628, 73 182, 12866007, 12866101, 364DIG1, G01N 2906, G01N 2922

Patent

active

056545096

ABSTRACT:
In the present invention, a control system uses acoustic data produced by an ultrasound system to assess whether the acoustic environment presented to the ultrasound system's transducer is an imaging environment, such as patient's body, or a nonimaging environment, such as air. Various operating parameters of the ultrasound system may be controlled based on the assessment. In the nonimaging environment, the control system reduces the amplitude of a drive signal applied to the transducer, substantially reducing power dissipation in the transducer. The control system detects a transition to the imaging environment and returns the drive signal to the amplitude used in the previous imaging environment. If the nonimaging environment persists for greater than a predetermined time period, the control system initiates a standby mode which substantially reduces power consumption by the ultrasound system. The control system is readily integrated into the imaging stream of an ultrasound system.

REFERENCES:
patent: 3552520 (1971-01-01), Naubereit
patent: 3578990 (1971-05-01), Naubereit
patent: 3619657 (1971-11-01), Naubereit
patent: 4945767 (1990-08-01), Shirasaka
patent: 5416726 (1995-05-01), Garcia-Duarte et al.
patent: 5482046 (1996-01-01), Deitrich
patent: 5504910 (1996-04-01), Wisor et al.

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