Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

A New Way To See Vessels in the Human Body

22.04.2003



Vessels are important parts of our body. Their function is critical to our well-being. For years, doctors have tried various tools to take pictures of arteries that would help them in diagnosing or preventing diseases. This has not been an easy task, however, and sometimes they have to use imaging methods that may have some harmful side effects. It has always been a challenge to take clear pictures of vessel without the negative side effects. Here, we suggest a new way that may help us to achieve this goal.

Vessels in our body are narrow tubes, with many branches along the way. Each segment may be thought of as a string, much like a piano string, extending from one point to another. Hammering on a piano string helps a tuner to "visualize" the string and find out if the string is in a good condition or not. We use the same concept, but with more sophistication, in our new imaging method. In our method, we tap a vessel to make it vibrate at its natural tone, and we record the sound produce by the "singing" vessel. As we move the tapping point across the area around the vessel, we record the sound and map point-by-point to make an image. The sound would be strong only if we are tapping on the vessel. The result is a "picture" of the vessel. This picture actually shows the vibration or sound of the vessel, so we may call it a "sound" image. If there is a change in vessel properties, for example due to a disease, the change will effect the natural tone of the vessel and therefore would be visible in this "sound" image.

In practice, the tapping is done with a specially designed ultrasound probe and the sound is recorded by a sensitive laser system that detects vessel vibrations from outside. This way we do not need to have direct access to the vessel. The method is considered safe because we do not use harmful radiations. Our initial experiments on objects resembling human vessels have shown promising results.



Xiaoming Zhang | American Institute of Physics
Further information:
http://www.acoustics.org/press/145th/Zhang.htm

More articles from Health and Medicine:

nachricht New study points the way to therapy for rare cancer that targets the young
22.11.2017 | Rockefeller University

nachricht Penn study identifies new malaria parasites in wild bonobos
21.11.2017 | University of Pennsylvania School of Medicine

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Frictional Heat Powers Hydrothermal Activity on Enceladus

Computer simulation shows how the icy moon heats water in a porous rock core

Heat from the friction of rocks caused by tidal forces could be the “engine” for the hydrothermal activity on Saturn's moon Enceladus. This presupposes that...

Im Focus: Nanoparticles help with malaria diagnosis – new rapid test in development

The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.

Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

Im Focus: Novel Nano-CT device creates high-resolution 3D-X-rays of tiny velvet worm legs

Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.

During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

Underwater acoustic localization of marine mammals and vehicles

23.11.2017 | Information Technology

Enhancing the quantum sensing capabilities of diamond

23.11.2017 | Physics and Astronomy

Meadows beat out shrubs when it comes to storing carbon

23.11.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>