光学影像法应用于血管成形术
文章来源:未知 文章作者:meng 发布时间:2010-08-11 01:07 字体: [ ]  进入论坛
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A new optical imaging technique described in the journal Review of Scientific Instruments, which is published by the American Institute of Physics, holds the potential to greatly improve angioplasty(血管成形术) , a surgery commonly performed to treat patients with a partially1 or completely blocked coronary artery2(冠状动脉) that restricts blood flow to the heart. Angioplasty involves threading a slender(细长的,苗条的) , balloon-tipped tube from an artery in the groin(腹股沟) to the trouble spot in the artery of the heart. The balloon is then inflated3 to compress the plaque4(血小板) that is blocking the artery. These balloons can also be used to deploy5 a stent, which is a wire-mesh tube sometimes inserted into the artery during an angioplasty procedure to keep it open and prevent reblockage.

In both cases, an optimal6 balloon design is critical to the success of an operation. Balloons can now be tested in a balloon deployment7 tester equipped with a system to monitor the outer diameter of the balloon, according to Guy Lamouche, research officer at the National Research Council of Canada.

With the goal of improving balloon deployment, the researchers investigated obtaining a more precise monitoring of balloon inflation by combining a deployment tester with an optical coherence8 tomography(X线断层摄影术) (OCT) imaging system. OCT allows imaging over a depth of a few millimeters in a tissue or material. By performing a pullback (rotation and translation) of a catheter(导管) OCT probe in a balloon, they discovered that it's possible to obtain a precise measurement of the balloon's diameter and thickness over the entire balloon.

"Combining OCT with a balloon deployment system provides an improved platform for angioplasty balloon development and can also be used in the development of next-generation minimally9 invasive devices for percutaneous(经皮的) -- through the skin -- coronary interventions," says Lamouche. "It's now possible to monitor balloon inflation within an artery phantom10(幽灵,幻影) (model) or an excised11 artery to assess the efficiency of innovative12 balloon angioplasty or stent deployment procedures."



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1 partially yL7xm     
adv.部分地,从某些方面讲
参考例句:
  • The door was partially concealed by the drapes.门有一部分被门帘遮住了。
  • The police managed to restore calm and the curfew was partially lifted.警方设法恢复了平静,宵禁部分解除。
2 artery 5ekyE     
n.干线,要道;动脉
参考例句:
  • We couldn't feel the changes in the blood pressure within the artery.我们无法感觉到动脉血管内血压的变化。
  • The aorta is the largest artery in the body.主动脉是人体中的最大动脉。
3 inflated Mqwz2K     
adj.(价格)飞涨的;(通货)膨胀的;言过其实的;充了气的v.使充气(于轮胎、气球等)( inflate的过去式和过去分词 );(使)膨胀;(使)通货膨胀;物价上涨
参考例句:
  • He has an inflated sense of his own importance. 他自视过高。
  • They all seem to take an inflated view of their collective identity. 他们对自己的集体身份似乎都持有一种夸大的看法。 来自《简明英汉词典》
4 plaque v25zB     
n.饰板,匾,(医)血小板
参考例句:
  • There is a commemorative plaque to the artist in the village hall.村公所里有一块纪念该艺术家的牌匾。
  • Some Latin words were engraved on the plaque. 牌匾上刻着些拉丁文。
5 deploy Yw8x7     
v.(军)散开成战斗队形,布置,展开
参考例句:
  • The infantry began to deploy at dawn.步兵黎明时开始进入战斗位置。
  • The president said he had no intention of deploying ground troops.总统称并不打算部署地面部队。
6 optimal zmDzhM     
adj.最适宜的;最理想的;最令人满意的
参考例句:
  • What is the optimal mix of private and public property rights in natural resources?私人和国家的自然资源产权的最适宜的组合是什么?
  • Optimal path planning is a key link for the sailing contest.帆船最优行驶路径规划是帆船比赛取胜的关键环节。
7 deployment 06e5c0d0f9eabd9525e5f9dc4f6f37cf     
n. 部署,展开
参考例句:
  • He has inquired out the deployment of the enemy troops. 他已查出敌军的兵力部署情况。
  • Quality function deployment (QFD) is a widely used customer-driven quality, design and manufacturing management tool. 质量功能展开(quality function deployment,QFD)是一个广泛应用的顾客需求驱动的设计、制造和质量管理工具。
8 coherence jWGy3     
n.紧凑;连贯;一致性
参考例句:
  • There was no coherence between the first and the second half of the film.这部电影的前半部和后半部没有连贯性。
  • Environmental education is intended to give these topics more coherence.环境教育的目的是使这些课题更加息息相关。
9 minimally 0e3844f43172f471e75a897f7b3116da     
最低限度地,最低程度地
参考例句:
  • Food spoilage problems occur with minimally processed, concentrated frozen citrus products. 食品的变质也发生在轻微加工的、浓缩冷冻的柑橘制品中。
  • So, minimally, they are responsible for such actions and omissions. 所以,至少来说,他们要对这样的行为和忽略负责。
10 phantom T36zQ     
n.幻影,虚位,幽灵;adj.错觉的,幻影的,幽灵的
参考例句:
  • I found myself staring at her as if she were a phantom.我发现自己瞪大眼睛看着她,好像她是一个幽灵。
  • He is only a phantom of a king.他只是有名无实的国王。
11 excised 46cfe41f4659e8f94d950d30ccb93fb3     
v.切除,删去( excise的过去式和过去分词 )
参考例句:
  • Certain passages were excised from the book. 书中某些段落已删去。
  • Similarly, any pigment nevus that is chronically irritated should be excised. 同样,凡是经常受慢性刺激的各种色素痣切勿予以切除。 来自辞典例句
12 innovative D6Vxq     
adj.革新的,新颖的,富有革新精神的
参考例句:
  • Discover an innovative way of marketing.发现一个创新的营销方式。
  • He was one of the most creative and innovative engineers of his generation.他是他那代人当中最富创造性与革新精神的工程师之一。
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