Abstract: This word representation device comprises a storage unit and a word representation generation unit. With respect to the streamline structures constituting flow patterns, the storage unit stores the correspondence between each streamline structure and the characters thereof. The word representation generation unit is provided with a root determination means, a tree representation configuration means, and a COT representation generation means. The root determination means determines a root for a given flow pattern. The tree representation configuration means configures a tree representation for the given flow pattern by repeatedly executing a process of extracting the streamline structure of the flow pattern, adding characters to the streamline structure, and deleting the extracted streamline structure, until the root is reached.

Abstract: An ultrasonic diagnostic device wherein: a Doppler processing unit acquires Doppler information in a living body on the basis of an ultrasonic reception signal; a velocity vector calculating unit acquires the velocity vector distribution of a blood stream in the living body on the basis of the Doppler information in the living body; and, to form a flow line showing the flow of the blood stream on the basis of the velocity vector distribution, a flow line forming unit searches for a proper start point by inversely tracing the flow of the blood stream from an initial start point along the reverse direction of the velocity vector and then forms a flow line extended from the proper start point.

Abstract: An ultrasonic diagnostic device wherein: a Doppler processing unit acquires Doppler information in a living body on the basis of an ultrasonic reception signal; a velocity vector calculating unit acquires the velocity vector distribution of a blood stream in the living body on the basis of the Doppler information in the living body; and, to form a flow line showing the flow of the blood stream on the basis of the velocity vector distribution, a flow line forming unit searches for a proper start point by inversely tracing the flow of the blood stream from an initial start point along the reverse direction of the velocity vector and then forms a flow line extended from the proper start point.

Abstract: A transmission reception unit forms a transmission beam by outputting a transmission signal to each of a plurality of vibrating elements provided in a probe and further forms a reception beam on the basis of a plurality of wave reception signals obtained from the plurality of vibrating elements. Thus, an ultrasonic beam (transmission beam and reception beam) is scanned in a scan surface. A velocity vector computation unit forms a two-dimensional velocity vector distribution in the scan surface from information regarding velocity of blood flow in an ultrasonic beam direction. A vortex detection unit tracks a flow of a fluid on the basis of the two-dimensional velocity vector distribution obtained by the velocity vector computation unit and detects a vortex in the fluid on the basis of whether or not the flow of the fluid satisfies a recurrence condition.

Abstract: An image forming processing unit forms image data for the interior of a body on the basis of a received ultrasonic signal. A Doppler processing unit generates Doppler information for the body interior on the basis of the receiving signals of ultrasonic waves. A velocity vector calculating unit generates velocity information (velocity vector) for blood flow on the basis of the Doppler information for the body interior. A region of interest setting unit sets a region of interest corresponding to a heart cavity in the image data. An energy calculating unit calculates the amount of energy lost in the blood flow in the heart cavity on the basis of the blood flow velocity information in the region of interest corresponding to the heart cavity.

Abstract: To provide a fluid flow rate detection device which can be evaluated as adequate from a medical point of view. The velocity of a fluid flowing through a luminal organ in vivo is to be obtained. V?(r, ?)=w·V??+(1?w)·V+? is calculated to obtain a calculated value V?(r, ?) of the flow rate regarding a component of the fluid in the direction perpendicular to the ultrasonic beam direction. Here, the weight w is a value proportional to the distance d from the wall on one side of the organ at least when the distance is smaller than a predetermined distance from the wall on the one side, and the weight is a value proportional to the distance d? from the wall on the other side of the organ at least when the distance is smaller than a predetermined distance from the wall on the one other side.

Abstract: To provide a fluid flow rate detection device which can be evaluated as adequate from a medical point of view. The velocity of a fluid flowing through a luminal organ in vivo is to be obtained. V?(r, ?)=w·V??+(1?w) V+? is calculated to obtain a calculated value V?(r, ?) of the flow rate regarding a component of the fluid in the direction perpendicular to the ultrasonic beam direction. Here, the weight w is a value proportional to the distance d from the wall on one side of the organ at least when the distance is smaller than a predetermined distance from the wall on the one side, and the weight is a value proportional to the distance d? from the wall on the other side of the organ at least when the distance is smaller than a predetermined distance from the wall on the one other side.

Abstract: A bloodstream visualizing diagnostic apparatus capable of visualizing and displaying a value relating to energy efficiency of bloodstream measured for an actual patient, and capable of improving usability, is provided. Provided is an bloodstream visualizing diagnostic apparatus which acquires flow rate information of a bloodstream flowing through a blood vessel in the body, calculates an energy loss of the bloodstream at a plurality of representative points within a region of interest in the blood vessel, using a calculation formula which does not explicitly include a blood pressure in the blood vessel, on the basis of the acquired flow rate information, and generates an image showing a magnitude of the calculated energy loss at the plurality of representative points.