Patent ID: 9304191
Filing Date: 2016-04-05
CPC Classification: A61B,G01S

Claim Text:
1. A subject information obtaining apparatus that obtains information of a subject based on an elastic wave received from the subject, the subject information obtaining apparatus comprising: a plurality of conversion elements configured to convert the elastic wave into a plurality of reception signals; a delay and sum unit configured to perform a delay and sum process by using the plurality of reception signals output from the plurality of conversion elements and generate a first plurality of scanning line signals; a scanning line synthesis unit; an FDI (frequency domain interferometry) adaptive processing unit configured to perform a frequency domain interferometry and an adaptive signal processing by using the first plurality of scanning line signals and obtain a first power intensity distribution; and a shift amount calculation unit configured to calculate a shift amount at a target position for each scanning line with the use of the first power intensity distribution, wherein the scanning line synthesis unit shifts the first plurality of scanning line signals by using the shift amount and generates a second plurality of scanning line signals, wherein the scanning line synthesis unit adds spatially adjacent two or more scanning line signals from the second plurality of scanning line signals and generates a plurality of synthesis scanning line signals, and wherein the FDI adaptive processing unit performs the frequency domain interferometry and the adaptive signal processing by using the plurality of synthesis scanning line signals and generates a second power intensity distribution.