About liver (实质回音不均质）
Chinese translation: heterogeneous parenchyma echo
| GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW) | ||||||
|---|---|---|---|---|---|---|
|
| 02:06 Apr 6, 2005 |
| English to Chinese translations [PRO] Medical: Health Care | |||||||
|---|---|---|---|---|---|---|---|
|
| ||||||
|  Selected response from: Edward LIU Canada Local time: 14:17 | ||||||
Grading comment
| |||||||
| Summary of answers provided | ||||
|---|---|---|---|---|
| 4 +1 | 实质回声不均 |
|
Answers
1 hr confidence: 
peer agreement (net): +1
peer agreement (net): +1| about liver (实质回音不均质） 实质回声不均 Explanation: 实质回声不均 -------------------------------------------------- Note added at 3 hrs 56 mins (2005-04-06 06:03:36 GMT) -------------------------------------------------- heterogeneous parenchyma echo 超声在介质中以直线传播，有良好的指向性。这是可以用超声对人体器官进行探测的基础。当超声传经两种声阻抗不同相邻介质的界面时其声阻抗差大于0.1%，而界面又明显大于波长，即大界面时，则发生反射，一部分声能在界面后方的相邻介质中产生折射，超声继续传播，遇到另一个界面再产生反射，直至声能耗竭。反射回来的超声为回声。声阻抗差越大，则反射越强，如果界面比波长小，即小界面时，则发生散射。超声在介质中传播还发生衰减，即振幅与强度减小。衰减与介质的衰减系数成正比，与距离平方成反比，还与介质的吸收及散射有关。超声还有多普勒应（Doppler effect），活动的界面对声源作相对运动可改变反射回声的回率。这种效应使超声能探查心脏活动和胎儿活动以及血流状态。 人体结构对超声而言是一个复杂的介质，各种器官与组织，包括病理组织有它特定的声阻抗和衰减特性。因而构成声阻抗上的差别和衰减上的差异。超声射入体内，由表面到深部，将经过不同声阻抗和不同衰减特性的器官与组织，从而产生不同的反射与衰减。这种不同的反射与衰减是构成超声图像的基础。将接收到的回声，根据回声强弱，用明暗不同的光点依次显示在影屏上，则可显出人体的断面超声图像。 -------------------------------------------------- Note added at 4 hrs 9 mins (2005-04-06 06:16:14 GMT) -------------------------------------------------- 肝内回声特点：正常肝实质呈中等或弱回声光点，其强度和频率皆均匀。 肝硬化时肝实质回声特点为：回声增粗、增强，可见斑块状强回声区；用适宜的增益条件扫描，看见多数低回声小结节镶嵌在肝实质内，前者由纤维化所致，后者系再生结节；随病变发展，出现肝结构紊乱、肝实质不均质改变，需要与弥漫性肝癌的声像图相鉴别。 -------------------------------------------------- Note added at 4 hrs 12 mins (2005-04-06 06:19:01 GMT) -------------------------------------------------- “回声不均匀”的现象反映“肝实质不均质”的本质 |
| |
Grading comment
| ||
| Login to enter a peer comment (or grade) | ||
Login or register (free and only takes a few minutes) to participate in this question.
You will also have access to many other tools and opportunities designed for those who have language-related jobs (or are passionate about them). Participation is free and the site has a strict confidentiality policy.
KudoZ™ translation help
The KudoZ network provides a framework for translators and others to assist each other with translations or explanations of terms and short phrases.
See also:
Search millions of term translations