文章摘要
朱霆,马玉英,尚志远,张若昕.人组织液医学超声空化阈值的研究[J].声学技术,1996,(3):113~115
人组织液医学超声空化阈值的研究
Cavitation threshold in human blood serum and plasma induced by medical ultrasound
投稿时间:1995-07-25  
DOI:
中文关键词: 
英文关键词: 
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作者单位
朱霆 第四军医大学西京医院超声科, 西安 710032 
马玉英 陕西师范大学声学所, 西安 710062 
尚志远 陕西师范大学声学所, 西安 710062 
张若昕 陕西师范大学声学所, 西安 710062 
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中文摘要:
      本文用荧光法检测医用理疗级连续波超声作用于人组织液(血清、血浆)发生空化产生的自由基,超声阈值强度ISATA(空间平均时间平均声强)分别为0.75W/cm2~0.85W/cm2和0.7W/cm2.本研究证明荧光法是检测医学超声空化的有效方法,并提供离体人组织液超声空化安全阈值的研究结果,同时发现人血清、人血浆空化的程度及空化与声强相关关系不同。
英文摘要:
      A new technique named chemical fluorescent spectrometer(CFS) was applied to determine the free radicals induced by cavitation of medical thermotherapy ultrasound.Free raidcals were detected in isonated human blood serum and plasma (exposured time 5 min.,nominal working frequency 856 kHz, spatial-average time-average intensity Isata),the cavitation threshold intensity in exposured human tissue liquids was measurde to be 0.75~0.85W/cm2 for blood serum,and 0.7W/cm2 for blood plasma, Our work proved CFS was an useful,reliable,accurate and sensitive method to detect microlcavitation induced by medical ultrasound. The cavitation threshold intensity of human blood serum and plasma was important for safety researching. In the meantime, exposured upon the same intensity of ultrasound, cavitation in serum and plasma was different, i.e.,the cavitation degree related with intensity in serum was not the same as in plasma.
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