Temperature rise generated by ultrasound in the presence of contrast agent

被引：54

作者：

Wu, JR ^{[1
]}

机构：

[1] Univ Vermont, Dept Phys, Burlington, VT 05405 USA

来源：

ULTRASOUND IN MEDICINE AND BIOLOGY | 1998年 / 24卷 / 02期

关键词：

diagnostic ultrasound; safety; thermal effects of ultrasound;

D O I：

10.1016/S0301-5629(97)00246-9

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Temperature elevation vs.time generated by a focused Gaussian ultrasound beam in the presence of contrast agents has been calculated using a perfect absorbing disc model. The results suggest that, if the contrast agent (Albunex (R)) is introduced into the body intravenously, the temperature rise in the heart, which is 4.5 cm from the transducer, generated by 110-mW (the corresponding acoustic intensity at the transducer front surface is 0.4 W/cm(2)) 2-MHz ultrasound is about 2 degrees C in 10 s. The relationship between temperature rise and the blood perfusion, acoustic power and focal length is discussed. (C) 1998 World Federation for Ultrasound in Medicine & Biology.

引用

页码：267 / 274

页数：8

共 22 条

[1]

*AIUM, 1993, BIOEFF SAF DIAGN ULT

[2]

American Institute of Ultrasound in Medicine (AIUM), 1992, STAND REAL TIM DISPL

[3]

BARNETT SB, 1992, ULTRASOUND MED BIOL, V18, P731

[4] ULTRASONIC CHARACTERIZATION OF ALBUNEX, A NEW CONTRAST AGENT [J].