PROBLEM TO BE SOLVED: To image viscoelastic characteristics in a specimen by a simple method.SOLUTION: Stepwise pressurization in which, after pressure is instantaneously increased to a certain pressure value, the certain pressure value is kept for a certain time period is performed to measure the variation with time of strain distribution in the specimen and to calculate a stress from strain distribution at a saturation measurement time when the effect of the viscosity of a viscoelasticity measurement reference layer is saturated, thereby evaluating the modulus of elasticity and the coefficient of viscosity of a body tissue.COPYRIGHT: (C)2013,JPO&INPIT【課題】 簡便な方法で被検体内の粘弾性特性を画像化する。【解決手段】 瞬間的に一定圧力まで加圧された後一定圧力を一定時間保持するステップ状加圧を行い被検体内の歪分布の時間変化を計測するとともに、粘弾性計測参照層の粘性の効果が飽和する飽和計測時間での歪分布より応力を算出することで生体組織の弾性率および粘性率が評価できる。【選択図】 図1
