Effect of pulse characteristics on temperature rise due to ultrasound absorption at a bone/soft-tissue interface.
Effect of pulse characteristics on temperature rise due to ultrasound absorption at a bone/soft-tissue interface.
复制标题
脉冲特性对骨/软组织界面处超声吸收引起的温升的影响。
DOI：
10.1121/1.1879232
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
M. Myers
中科院分区：
文献类型：
--
作者：
M. Myers
骨/软组织界面处的瞬时温升是涉及高强度超声脉冲序列的手术安全性评价中的一个重要量。基于脉冲串的时间平均强度的数学模型可以提供对温度上升的快速估计，但是已知会低估脉冲接通时间期间的温度上升。本文扩展了以前的分析模型，占脉冲形状，并提供误差估计采用时间平均强度的模拟。一个简单的解析表达式的界面温度，占骨和软组织的属性。的解析表达式同意以及基于有限元法的温度上升的预测，当超声时间是大的脉冲重复周期相比。在这种情况下，大的相对声时间，脉冲形状被发现是无关紧要的。
The transient temperature rise at a bone/soft-tissue interface is an important quantity in the safety evaluation of procedures involving trains of high-intensity ultrasound pulses. Mathematical models based upon the time-averaged intensity of the pulse train can provide rapid estimates of the temperature rise, but are known to underestimate the temperature rise during the on-time of the pulse. This paper extends a previous analytical model to account for pulse shape, and provides error estimates for simulations employing time-averaged intensities. A simple analytic expression for the interface temperature that accounts for both bone and soft-tissue properties is provided. The analytic expression agrees well with temperature rise predictions based upon the finite-element method, when the insonation time is large compared to the pulse repetition period. In this case of large relative insonation time, the pulse shape is found to be inconsequential.
DOI：
10.1121/1.426854
发表时间：
1999-04
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
W. F. Walker
通讯作者：
W. F. Walker
影响因子：
3.5
作者：
NYBORG, WL
通讯作者：
NYBORG, WL
DOI：
10.1016/0360-3016(84)90379-1
发表时间：
1984-01-01
影响因子：
7
作者：
SAPARETO, SA;DEWEY, WC
通讯作者：
DEWEY, WC