Patent ID: 7331928
Filing Date: 2008-02-19
Classification: A61B

Abstract:
1. An ultrasonic Doppler blood flow measurement device comprising: an ultrasonic wave send/receive section that sends ultrasonic pulses into an object to be examined and receives ultrasonic pulse echoes that are reflected from inside the object; a phase detection section that detects components that have undergone Doppler transition from among the ultrasound pulse echoes and takes these as detection signals; a first memory section that is constituted by a memory that has a two-dimensional address space and different data read/write speeds in a row direction and a column direction of the address space, and that stores the detection signals; a blood flow information computation section that calculates blood flow information from the detection signals; a second memory section that is constituted by a memory that has a capacity that is smaller than that of the first memory section but is at least the capacity of a data amount required for the blood flow information computation section to compute any one depth point of the object, and that stores the detection signals used for the computation by the blood flow information computation section; and a data transfer section that performs data transfer from the first memory section to the second memory section in only the direction, of the row direction and the column direction of the address space of the first memory section, that has the faster data read/write speed.