Patent ID: 9709675
Date: 2017-07-18
CPC Classifications: A61B,G01S

Claim:
1. An object information acquisition apparatus comprising: a plurality of transducer elements each configured to transmit an acoustic wave to an object, to receive reflected waves reflected from inside the object, and to convert the reflected waves into a reception signal; and a processor configured to perform frequency domain interferometry combined with adaptive signal processing by using the reception signals output from the plurality of transducer elements and reference signal so as to obtain acoustic characteristics at a plurality of positions located inside the object, wherein the processor is configured to apply different reference signals in accordance with a target position located inside the object while performing the frequency domain interferometry so as to obtain the acoustic characteristics at the plurality of positions located inside the object, wherein different reference signals are used in obtaining a power intensity distribution for a first region within an image region and having a first depth range, a power intensity distribution for a second region within the image region and having a second depth range larger than the first depth range, and a power intensity distribution for a third region within the image region and having a third depth range larger than the second depth range.