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Ultrasound


— Medical

Ultrasound device could help detect cause of heart attack and stroke

By - April 27, 2014 1 Picture
While existing ultrasound technologies are able to identify plaque buildup on artery walls, determining when that plaque is at risk of breaking off, resulting in a heart attack or stroke, has proven a more complicated task. A team of researchers from North Carolina State University has now developed a dual-frequency ultrasound device that could help identify so-called vulnerable plaque and enable a more accurate diagnosis for at-risk patients. Read More
— Medical

Tiny probe designed to provide live 3D images from within blood vessels

By - February 24, 2014 1 Picture
Imagine if you were trying to clear rubble out of a tunnel, but you could only see that tunnel from the side, instead of looking straight into it. Well, that's currently what it's like for doctors who are trying to see inside patients' blocked coronary blood vessels using ultrasound. Soon, however, a tiny catheter-based probe may give them a 3D real-time forward view from inside those vessels – or from inside the heart itself – not unlike that seen by the microscopic submarine crew in the movie Fantastic Voyage. Read More
— Health and Wellbeing

Ultrasound pulses could replace daily injections for diabetics

By - November 21, 2013 1 Picture
There could be hope for diabetics who are tired of giving themselves insulin injections on a daily basis. Researchers at North Carolina State University and the University of North Carolina at Chapel Hill are developing a system in which a single injection of nanoparticles could deliver insulin internally for days at a time – with a little help from pulses of ultrasound. Read More
— Health and Wellbeing

Ultrasound-emitting "band-aids" speed healing of venous ulcers

By - August 7, 2013 1 Picture
Venous ulcers are nasty things, often found on the lower extremities of elderly or inactive people. They occur when high blood pressure causes the skin adjacent to the affected veins to break down, leaving open wounds that take months or even years to heal. Standard treatments include compression bandages, infection control and standard wound dressings, although these approaches don’t work in all cases. Now, however, scientists are getting good results using band-aid-like patches that emit ultrasound into the ulcers. Read More
— Science

Surfing on a wave of sound allows controlled movement of levitating objects

By - July 19, 2013 2 Pictures
With the exception of magic, the process of levitating objects generally relies on magnetism or electric fields. However, sound waves can also be used to cancel out the effects of gravity to suspend objects and droplets of liquid in mid air. For the first time, researchers at the Swiss Federal Institute of Technology Zurich (ETH) have been able to control the movement of such levitating objects. Besides looking cool, the technology has implications for the study of various chemical reactions and biological processes and the development and production of pharmaceuticals and electronics. Read More
— Medical

Microbubbles could image the heart and deliver anti-clotting drugs simultaneously

By - May 29, 2013 1 Picture
When someone has a heart attack, it’s crucial that they receive treatment as soon as possible. Emergency medical technicians, however, are limited in how detailed of an on-the-spot diagnosis they can make of a patient’s condition. This means that actual treatment often has to wait until they get the patient to a hospital. That could be changing, however, as a scientist with GE Global Research is now looking into the use of “microbubbles” as a mobile means of imaging the heart and possibly even treating it. Read More
— Wearable Electronics

Casio device lets scuba divers converse underwater

By - November 13, 2012 2 Pictures
Ordinarily, if scuba divers want to talk to one another underwater, they have to wear special full-face masks that leave their mouths unobstructed by the regulator. Such masks are pricey and a bit cumbersome, however, so they’re usually only used by professional divers. Today, however, Casio announced the development of a new type of underwater voice communications device that works with plain old “eyes-and-nose-only” dive masks. Read More
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