INSTRUMENT AND METHOD FOR MEASURING BLOOD VESSEL VISCOELASTICITY, PROGRAM, COMPUTER READABLE RECORDING MEDIUM, LARGE-SCALE INTEGRATED CIRCUIT, AND FPGA

摘要

PROBLEM TO BE SOLVED: To easily correct a phase deviation between a stress signal and a distortion signal with a simple configuration without performing determination after comparison with a catheter whose phase characteristic is previously known.

SOLUTION: A blood vessel viscoelasticity measuring instrument 1 includes: a calculating part 9 for correcting the phase deviation between the stress signal and the distortion signal, based on a shift time with the maximum determination coefficient, which expresses a multiple correlation coefficient between an estimation stress signal, obtained by performing regression calculation, based on the distortion signal expressing the distortion of a blood vessel along the radial direction of a blood vessel wall, and the stress signal, expressing the stress of the blood vessel along the radial direction of the blood vessel wall; an instrument control part 10; and a timing control part 11.

COPYRIGHT: (C)2009,JPO&INPIT