| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasonic diagnostic apparatus and a blood flow estimation program with which blood flow and a division ratio for an unsteady stream at a branch part of a blood vessel can be accurately estimated.SOLUTION: An ultrasonic measurement means 11 transmits ultrasonic signals to a blood vessel on the upstream side of a branch part and one branch blood vessel on the downstream side, and receives echoes. On the basis of each of the echoes, a measurement processing means 12 obtains shape information and blood flow rate information of the blood vessel on the upstream side and the branch blood vessel on the downstream side. A simulation means 13 gives as boundary conditions, the blood flow rate that flows into the blood vessel on the upstream side and a blood flow rate distribution shape, and the blood flow rate that flows out from the branch blood vessel on the downstream side and the blood flow rate distribution shape by a free outflow boundary condition, and adjusts the boundary conditions so as to reduce errors between each blood flow rate information obtained by calculation and each blood flow rate information acquired in the measurement processing means 12. On the basis of the boundary conditions, the blood flow rate distribution and pressure distribution of the blood vessel on the upstream side and the branch blood vessel on the downstream side are obtained, and displayed in a display means 14. |
