Methods and apparatus for ultrasound imaging using combined scan

Details Methods and apparatus for ultrasound imaging using combined scan Methods and apparatus for ultrasound imaging using combined scan

1998-05-08

2000-05-02

Larkin, Daniel S.

Measuring and testing

Vibration

By mechanical waves

73628, 73641, 600447, 600459, G01N 2906, G01N 2910, G01N 2926, A61B 808

Patent

active

06055861&

ABSTRACT:
An ultrasound imaging system includes an array of transducer elements, a predetermined number of transducer and receiver channels less than the number of transducer elements in the array, and an electronic switch for selecting transducer elements for connection to the transmitter and receiver channels. A method using the imaging system for ultrasound imaging with a sector scan pattern includes determining, from a sector aperture size and a sector aperture location on the array, a mapping of the transducer elements to the transmitter and receiver channels. Focusing delays are determined from a sector angle and a focus for the sector scan pattern, and the focusing delays are converted to mapped focusing delays using the mapping. Ultrasound energy is transmitted and received along sector scan lines of the sector scan pattern in response to the mapped focusing delays, and signals representative of an image along the sector scan lines are provided.

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patent: 5123415 (1992-06-01), Daigle
patent: 5140558 (1992-08-01), Harrison, Jr. et al.
patent: 5322068 (1994-06-01), Thiele et al.

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