THE SENSITIVITY OF DROSOPHILA LARVAE TO CONTINUOUS-WAVE ULTRASOUND

被引：3

作者：

CHILD, SZ ^{[1
]}

RAEMAN, CH ^{[1
]}

WALTERS, E ^{[1
]}

CARSTENSEN, EL ^{[1
]}

机构：

[1] UNIV ROCHESTER,ROCHESTER CTR BIOMED ULTRASOUND,ROCHESTER,NY 14627

来源：

ULTRASOUND IN MEDICINE AND BIOLOGY | 1992年 / 18卷 / 08期

关键词：

CW ULTRASOUND; LARVAE; GAS BODY ACTIVATION; CAVITATION;

D O I：

10.1016/0301-5629(92)90123-R

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The threshold for killing of freshly hatched Drosophila larvae exposed to continuous-wave (CW) ultrasound shows a minimum at approximately 0.3 MHz. This suggests that the stiffness of the material surrounding the gas bodies in the organism is comparable to water. From this, it is apparent that the gas bodies in three-day-old larvae that we have used in earlier studies are far larger than resonance size at the frequencies (1-5 MHz) used. Yet, these larvae were killed by short exposures to low-temporal-average-intensity pulsed ultrasound with peak intensities of the order of 10 W/cm2. Hence, it appears that "large" bubbles cannot be ignored in considerations of the biological effects of pulsed ultrasound and lithotripsy.

引用

页码：725 / 728

页数：4

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