Effects of biological tissues exposed to ultrasound with acoustic radiation force impulse.

采用超声造影剂（UCA）和不使用超声造影剂（UCA）对动物组织的热升高和组织损伤进行了声学辐射力脉冲（ARFI）评价。肝脏升高1 ~ 5℃，UCA无效果。骨表面温度升高2 ~ 6℃，肝组织未见细胞死亡。仅在给予UCA的情况下，在心脏上应用ARFI时发现早心室复合体。

ARFI (Acoustic Radiation Force Impulse) that is used to evaluate tissue elasticity was examined about the thermal elevation and tissue damage on the animal tissues with or without ultrasound contrast agent (UCA). 1 to 5 degree C elevation was found on the liver with no effect of UCA. On the bone surface, temperature rose 2 to 6 degree C. The findings of cell death were not found on the liver tissue. Only under administration of UCA, premature ventricular complex was found when ARFI was applied on the heart.