Measurement of intrauterine transient sound parameter by polyvinyliden e fluoride piezoelectric sensor in pregnant rats
- VernacularTitle: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
- Author:
Jianping ZHU
;
Wende SHOU
;
Jiaqi LI
- Publication Type:Journal Article
- From:
Chinese Journal of Ultrasonography
2001;10(3):180-181
- CountryChina
- Language:Chinese
-
Abstract:
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 we re measured with polyvinylidene fluoride (PVDF) piezoelectric sensor.Results There was a significant difference in the maximal p+(pea k-positive acoustic pressure),p-(peak-negative acoustic pressure),Ispta(inten sity spatial peak temporal peak), Ispta(intensity peak temporal average),Im(int ensity maximum) measured between inside the uterus and in water free field by va rious 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.
