Abstract: A region of interest is defined in a living body. A plurality of transmission beams are simultaneously formed along a transmission center axis in such a manner that a plurality of transmission focal points are formed at a plurality of positions shallower than the region of interest on the transmission center axis. As a rest, a composite transmission beam is generated in the living body. After the composite transmission beam is formed, a reception beam set is generated.

Abstract: To uniformly extract a secondary flow based on quantitative calculation even in a complicated blood flow in a heart chamber or a blood vessel.

Abstract: Provided are an ultrasonic signal processing device that can evaluate reliability of a velocity vector calculated by sub-pixel tracking, an ultrasonic diagnosis apparatus, and an ultrasonic signal arithmetic processing method. The ultrasonic signal processing device includes an echo signal acquisition unit that acquires an echo signal reflected by an object to be inspected, a velocity vector calculation unit that calculates a velocity vector using the echo signal, a post-parallel-movement signal generation unit that generates a post-parallel-movement signal obtained by approximately parallelly moving the echo signal, an image deformation component extraction unit that extracts an image deformation component which is a change component of a signal value due to deformation of an image from a deviation between the post-parallel-movement signal and the echo signal, and an error energy calculation unit that calculates an error energy of the velocity vector from the image deformation component.

Abstract: Provided are an ultrasonic signal processing device that can evaluate reliability of a velocity vector calculated by sub-pixel tracking, an ultrasonic diagnosis apparatus, and an ultrasonic signal arithmetic processing method. The ultrasonic signal processing device includes an echo signal acquisition unit that acquires an echo signal reflected by an object to be inspected, a velocity vector calculation unit that calculates a velocity vector using the echo signal, a post-parallel-movement signal generation unit that generates a post-parallel-movement signal obtained by approximately parallelly moving the echo signal, an image deformation component extraction unit that extracts an image deformation component which is a change component of a signal value due to deformation of an image from a deviation between the post-parallel-movement signal and the echo signal, and an error energy calculation unit that calculates an error energy of the velocity vector from the image deformation component.

Abstract: To uniformly extract a secondary flow based on quantitative calculation even in a complicated blood flow in a heart chamber or a blood vessel.

Abstract: The present invention provides a technique for estimating a blood flow velocity gradient in the vicinity of a blood vessel wall surface with high accuracy under various blood flow conditions.