Patent ID: 8500640
Filing Date: 2013-08-06
Classification: A61B

Abstract:
1. A blood vessel function inspecting apparatus provided with a blood vessel diameter measuring portion configured to measure a change ratio of a diameter of a blood vessel within a live body in a non-invasion manner with ultrasonic waves irradiated toward the blood vessel during a predetermined blood vessel diameter measuring time period after releasing of the blood vessel from blood flow obstruction, the blood vessel function inspecting apparatus comprising: a blood flow velocity distribution measuring portion configured to measure a blood flow velocity distribution within said blood vessel in a non-invasion manner with said ultrasonic waves before said releasing of the blood vessel from the blood flow obstruction or after said blood vessel diameter measuring time period; a viscosity-shear rate relationship calculating portion configured to calculate a viscosity-shear rate relationship between a blood viscosity and a blood shear rate, on the basis of said blood flow velocity distribution measured by said blood flow velocity distribution measuring portion; and a blood shear stress calculating portion configured to calculate a blood flow velocity within said blood vessel, concurrently with the measurement of said change ratio of the diameter of the blood vessel within said predetermined blood vessel diameter measuring time period after said releasing of the blood vessel from the blood flow obstruction, and calculating a blood shear stress on the basis of said calculated blood flow velocity, and according to said viscosity-shear rate relationship.