1) Ultrasonic tracking
超声波追踪
2) systematic continuous sequence approach
连续顺序追踪超声检查
1.
Objective To explore the value of ultrasonographic evaluation in fetal deformity in prenatal diagnosis by a systematic continuous sequence approach(SCSA).
目的:探讨连续顺序追踪超声检查法(systematic continuous sequence approach,SCSA)在产前胎儿畸形诊断中的价值。
4) Speckle tracking imaging
超声斑点追踪成像
1.
Speckle tracking imaging evaluation for the left ventricular systolic function of pigs after close myocardial contusion
超声斑点追踪成像技术评价猪实验性心肌挫伤后左心室收缩功能变化
5) ray tracing
声线追踪
1.
A two-dimensional sound ray tracing method was presented,which can deal with the problems,such as reflection,refraction,all-reflectiom,and help to find the sound ray trajectories rapidly.
给出了一种二维的浅海声线追踪方法,解决了声线的反射、折射、全反射等问题并快速地找出声线的路径。
2.
A synthetic aperture sonar 3-D data simulating model was brought out based on acoustic ray tracing techniques.
提出了一种基于声线追踪技术的合成孔径声纳三维数据仿真模型。
6) acoustic ray tracing
声线追踪
1.
The two-dimensional acoustic ray tracing method by forward deploying triangle,which is based on the geometric acoustics,divides the space by triangles and then confirms the acoustic ray tracing by Snell rule.
二维声线追踪的三角形前向展开法,以几何声学为理论基础,对空间进行三角形划分,由斯涅尔法则确定声线路径。
补充资料：超声
超声
UltrasofliCS
是指超出人耳听力范围的高频声(频率超过20000Hz）。超声具有与一般声音共同的物理性质，还具有一些其他重要的物理特性，如能够成束发射，直线传导，方向性好。传导过程中遇有声阻抗不同的反射界面时产生反射、折射、聚焦和散焦等现象。用于临床诊断的超声频率一般为2～7.5MHz。频率越高，对组织结构的分辨力越强，但远场声能容易被组织吸收、衰减，不易穿透较深的层次。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条