Tag: "waves" at medical news
Emory Doctors Discuss "Killing Heat" In This Week's NEJM
...elters or giving fans to poor citizens during heat waves
are "not enough," they say. "Unfortunately, the most well-intentioned efforts can be hampered by suspicion and fear," the authors say. "Air-conditioners have been turned off by victims who felt they could not afford the utility bill. Homes can b...
MRI-Guided Cancer Surgery
...Jeffrey Duerk, Ph.D. The probe emits radio waves
that heat and kill tumor cells. Watching the MRI video monitor, doctors can adjust the instrument to reach all parts of the malignancy while avoiding healthy tissue. As the physicians work, they can actually see the tumor die. Hines' previou...
Princeton Plasma Physics Laboratory collaborates with USDA in development of pasteurization process
...steurization methods that use radio frequency (RF) waves
and microwave heating. These heating techniques --...tentially effective means for pasteurization. RF waves
offer advantages over the traditional pasteurization method of directly heating raw liquid foods. Th...
Radio Frequencies Used To Kill Inoperable Liver Tumors At Penn's Cancer Center
...Center are using high-energy radio frequency sound waves
to destroy inoperable primary and metastatic liver tumors. The powerful procedure -- called radio frequency ablation -- is available exclusively in the Delaware Valley region at Penn's Cancer Center... and available at only a few select hospitals acr...
Magnetic Hearing Aid Could Open New "Window" For Hearing Impaired
... a person's voice, for example, bygenerating sound waves
matching those of the voice as it reaches the ear....hemagnetic hearing device. In this way, the sound waves
from the device amplifythe desired sound. To reduce background noise, however, the device simply g...
University Of Kentucky One Of First To Use New Technique To Treat Atrial Flutter
...dy showing that a form of ablation that used radio waves
was more effective than medication. Now, he says t... a one-time proposition. "Now, when we use radio waves
to treat atrial flutter, the problem comes back in about 10 percent of the cases," he said. "But wit...
Treatment For Cancer May No Longer Be As Grim As The Disease
Cauterising tumours with radio waves
may provide a less invasive alternative tosurgery for liver cancer and many other types of tumour, say two cancerspecialists. Surgery to remove a tumour can prevent cancer spreading throughout thebody. But in some cases, doctors decide not to ...
Ultrasonography Predicts Heart Attack/Stroke Risk
...elatively inexpensive, painless test in whichsound waves
above the range of human hearing are sent into the neck. Echoesbounce off the moving blood and the tissue in the artery and are then formedinto an image. The test is currently used in stroke prevention to diagnose advanceddisease in the c...
Ablatherm: An Ultrasound Device For Prostate Cancer Therapy
...gned to break up kidney stones by the use of shock waves
(it was thisapplication that led to the creation of Technomed)....
MRI Images Using Laser-Polarized Xenon
...ngs. These polarized protons are detectedby radio waves
and processed in a computer to produce detailed images ofinternal soft tissue. Instead of water molecules, the U-M's prototype MRI system detects signals frommolecules of xenon, which have been polarized by an laser optical pumping systembefore being...
Non-Invasive Techniques To Visualize Heart Disease Confirm Importance Of Pre-Menopausal Risk Factors, Find U. Of Pgh. Researchers
...blood vessels. Sonar-likeultrasound employs sound waves
to measure the thickness of blood vessel wallsand identify areas where plaque has deposited. Using both techniques, doctorscan spot arterial plaque build-up long before life-threatening obstructionsoccur. Dr. Sutton-Tyrrell's team also found that hi...
Scientists at Children's Hospital and Brandeis use video games to unlock secrets of the brain's sense of direction
...ence: they've taught researchers that certainbrain waves
may be the key to learning and remembering how to ...l mazes. The researchers focused on slow, rhythmic waves
ofelectrical activity known as theta oscillations, produced when groups of braincells, or neurons, a...
Are the signs of dyslexia in a newborn baby?
...dyslexia in 8-year-olds onthe basis of their brain waves
just hours after birth. Earlier detection maymake it possible to reduce or even eliminate reading problems in childhood. Dyslexia, a learning disability characterised by problems reading andwriting, is thought to afflict around 5 per cent of...
Sub-saharan African music, visibly stressed E. coli, and the sounds of Mars at
National Acoustics meeting
...of the waves. The researchers discovered that the waves
get absorbedby ice but not liquid water. The rese..., forinstance, when they are exposed to ultrasound waves
in water. Different formsof stress such as protein damage and disturbances in their cell membrane c...
Heart disease begins at a young age
...ient's leg, the researchers were able to use sound waves
to image the heart arteries. The study examined the heart arteries of 181 heart transplant recipients two to six weeks following transplantation. The donor hearts were from people who were free of known heart disease. Nevertheless, the researchers ...
Brain scans of Gulf War veterans show brain damage
...ectroscopy explores brain chemistry by using radio waves
to measure intracellular concentrations of protons and estimate the concentrations of common brain chemicals. Previous magnetic resonance imaging (MRI) on the veterans found no visible structural changes to the brain. But by using MR spectroscopy, ...
License agreement signed to commercialize intelligent hearing aid
...me of arrival and the intensity of impinging sound waves
to perform spatial processing and filtering. This allows us to focus our attention in the direction of the desired sounds and ignore the rest."To perform this process artificially, the researchers developed an efficient algorithm capable of extracti...
Science, engineering and technology newstips
...ly, some components for tuning and receiving radio waves
cannot be put on chips, increasing the size of devices. Miniaturized, on-chip components will be needed to make wearable communications devices feasible, he said. Note: A picture of the micromirror and motor is available. Contact Andy Fell for detai...
Expert scientific panel releases national assessment of climate change and health in the United States: impact could be far-reaching
...e who are chronically ill or isolated. Deadly heat waves
are already common in summer and may become more so in the future, yet many locations lack effective programs to prevent such deaths." Of climate changes effects on air pollution, Jonathan Samet, MD, professor and chair of epidemiology at the Blo...
Ultrasonic microprobe may rapidly detect, identify cancer
...ature probe into a tumor and using pulses of sound waves
to image the surrounding tissue, our system could facilitate the early diagnosis of cancer, said William OBrien Jr., a UI professor of electrical and computer engineering and the director of the Bioacoustics Research Laboratory at the universitys Bec...
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