BIOLOGICAL EFFECTS OF ULTRASOUND

低兆赫超声与辐射相互作用的程度和性质 研究了哺乳动物的组织。因为超声波现在被广泛使用 在临床诊断和治疗中，生育的机会 器官暴露，在相当长的时间内达到显著水平 时间是存在的。哺乳动物的卵巢被选为 在本研究中的调查，这项研究启动了几年 那是以前的事了。这项研究涉及确定哪种功能的阈值水平 和/或小鼠黄体发生结构变化，包括 吸收系数的测定。多方面的影响 暴露也要进行评估。这项调查包括电子 显微镜和生育研究，这些研究的结果将 为评估卵巢组织在以下方面发生的风险提供依据 在治疗性和诊断性水平暴露于临床超声 和政权。

The degree and nature of the interaction of low megahertz ultrasound and mammalian tissues is studied. As ultrasound is now widely employed clinically in diagnosis and therapy, the opportunity for reproductive organs to become exposed, to significant levels for appreciable periods of time, is extant. The mammalian ovary has been selected for investigation in the present study, which was initiated several years ago. The study involves determining threshold levels at which functional and/or structural changes occur to the murine corpora lutea, including determination of absorption coefficients. The effect of multiple exposures is also assessed. The investigation includes electron microscopy and fertility studies, The results of these studies will provide bases for assessing risk incurred by ovarian tissues during exposure to clinical ultrasound at therapeutic and at diagnostic levels and regimes.