聚偏氟乙烯超声传感器测量孕鼠宫内瞬态声参数的实验研究  

Measurement of intrauterine transient sound parameter by polyvinylidene fluoride piezoelectric sensor in pregnant rats

作　　者：朱建平[1] 寿文德[2] 李佳琦 

机构地区：[1]南京军区福州总医院超声诊断科,福州350025 [2]上海交通大学生物医学工程系

出　　处：《中华超声影像学杂志》2001年第3期180-181,共2页Chinese Journal of Ultrasonography

摘　　要：目的　探讨超声诊断仪器输出声压和声强与孕鼠宫内胚胎实际受照声压和声强间的相关性。方法　应用聚偏氟乙烯 (PVDF)压电传感器 ,对经腹彩色多普勒辐照的孕鼠进行宫内瞬态声参数及声场参数的测量。结果　 2 .5MHz、3 .5MHz、7.0MHz彩超探头在水中自由场的最大正负瞬时声压 (p +、p-)、空间峰值时间峰值声强 (Isptp)、空间峰值时间平均值声强 (Ispta)和最大声强 (Im )测值与孕鼠宫内实际测得声参数值比较差异有显著性意义。结论　实验证实孕鼠宫内胚胎实际超声辐照量 (声压、声强 )小于彩超仪器输出功率。Objective To evaluate the correlation between the sound pressure and intensity output by ultrasonic diagnostic apparatus and received by the embryo in the uterus.Methods The transient sound parameter and sound field parameter inside the uterus in pregnant rats irradiated by transabdominal color Doppler were measured with polyvinylidene fluoride (PVDF) piezoelectric sensor.Results There was a significant difference in the maximal p+(peak positive acoustic pressure),p-(peak negative acoustic pressure),Ispta(intensity spatial peak temporal peak), Ispta(intensity peak temporal average),Im(intensity maximum) measured between inside the uterus and in water free field by various kinds probes( 2.5 MHz, 3.5 MHz, 7.0 MHz).Conclusions The irradiation received by the embryo in uterus was smaller than the output of ultrasonic diagnostic apparatus.

关 键 词：超声学 压电传感器 声学参数 

分 类 号：R445.1[医药卫生—影像医学与核医学]