Tag: "tiny" at medical news
Coronary stents do not improve long-term survival
...ts, which were introduced in the U.S. in 1994, are tiny
mesh tubes that are inserted at the site of a blockage in a coronary artery that has been opened during balloon angioplasty. The procedure seeks to prevent the artery from becoming blocked again, a process known as restenosis. These blockages, caused...
Scientists pinpoint flaw, offer new promise for stroke treatment
...r some patients, but right now it's available to a tiny
minority of patients. We hope to extend the window...of stroke symptoms. That's a big reason why just a tiny
fraction of patients benefit from the drug: Zlokovic estimates that the drug reaches only about thre...
Advanced, precise radiation may boost limb-sparing therapy for sarcoma
...ogist uses a computer-controlled machine to thread tiny
radiation sources through the catheters and into the cavity. This radiation treatment can often be done over just a few days, and then the catheters are removed. The idea is to deliver high-energy X-rays right to where they are most needed-where ca...
American Thoracic Society journal news tips for November 2004 (first issue)
...is a hormone secreted by the human pineal gland, a tiny
endocrine gland situated in the center of the brain. It is believed to play an important role in the regulation of sleep cycles.) Even when asthma is well-controlled, the investigators said that the drugs used for the disease such as oral steroids...
Capsule endoscopy aids in detection of small bowel tumors inaccessible to other diagnostic tests
...wireless capsule endoscopy, the patient swallows a tiny
imaging capsule that incorporates a light source, video camera, battery, antenna and radio transmitter. Images of the intestinal tract are transmitted twice each second by radio frequency to an array of sensors worn around the patient's abdomen and ...
Researchers develop neural prosthesis allowing a monkey to feed self using only its brain
... intercepts signals through electrodes attached to tiny
probes that tap into neuronal pathways in the motor cortex, a region of the brain responsible for voluntary movement. The neurons' collective activity is fed through an algorithm developed at the University of Pittsburgh and then sent to the arm to t...
Smoking affects same 'feel good' brain chemical system as heroin
...flow of opioids directly, but rather the status of tiny
receptors on the surface of brain cells. These receptors, called mu-opioid receptors, act like locks that can only be opened when opioid molecules -- either made by the brain or introduced from outside -- bind to them. Morphine, heroin and some anest...
Promise of stem cells amplified
...help them differentiate into neurons. They used a tiny
electrode designed to measure the electrical activity of individual neurons. This technique, called patch-clamp electrophysiology, revealed that the cells indeed fired action potentials, a neuron's electrical signature. The cells also release glutama...
New understanding of neural circuits may help development of thought-controlled prosthetic devices
... One common way to study this activity is to place tiny
wires, or electrodes, in the brain. This allows re...rical signals between nerve cells. "We have made a tiny
device, called a microdrive, which holds up to three electrodes at a precise position in select brai...
American Thoracic Society Journal news tips for October 2004 (second issue)
...ions of environmentally relevant concentrations of tiny
particulate matter (PM2.5) from a smelter area in Germany induced distinct airway inflammation in 12 healthy subjects, as compared with PM2.5 from a nearby rural town. Researchers instilled ambient particles (PM2.5) through a bronchoscope into the l...
Life saving option replaces open heart surgery in newborns
... said. "This is a very dangerous surgery for these tiny
infants. We have to put them on cardio-pulmonary bypass, cool the patient and do deep hypothermic circulatory arrest. On a five or six day old, who may be premature, it's not surprising that the outcomes in terms of the brain are not very good." "Alt...
Department of Energy announces new agreement with USC, national labs and private company
..., which are stimulated by the images captured by a tiny
camera mounted on a unique pair of glasses. The implant then sends that signal to the remaining healthy retinal nerve cells, which then pass it on to the optic nerve and, hence, to the brain. The most current version of the implant, with 60 ...
U. Va. researchers unravel a central mystery of how hearing happens
...in called TRPA1 that is located at the tips of the tiny
sensory cells in the inner ear. They found that TRPA1 converts sound into nerve impulses, which are transmitted to the brain. Identification of the protein and the gene that encodes TRPA1, could allow for future treatments for deafness. "This is one...
When looking isn't seeing: Is cockpit design flawed?
...ject-images simultaneously, we are only aware of a tiny
fraction of this information," explains Dr. Greg Davis of Cambridge University. "Our 'visual' brain has evolved to prioritize relevant features in a scene and ignore irrelevant ones." But this selectivity can lead to problems in information-rich envi...
Reconstituted blood is better for infants' heart surgery than fresh blood
...eir own blood to supply both the machine and their tiny
bodies. Blood priming of the cardiopulmonary bypass machine is not necessary for adults, whose blood volume is larger. Traditionally, surgeons have insisted on using fresh whole blood to prime the bypass machine and would even cancel procedures wh...
Sealing corneal incisions with a drop of chemistry, BU researchers develop gel for cataract surgery
...lear area (cornea) of the outer eye. Through this tiny
opening, the surgeon works to break up the lens, often by using high-frequency sound waves; extracts the destroyed lens; then implants a synthetic lens. Currently, the procedure finishes with the surgeon following one of two accepted paths: allowing...
Severe pain relief may be possible with a common anesthetic drug
...ell's promising innovation, forged by necessity in tiny
resource-poor clinics in the jungles of Papua-New Guinea and Northern Australia and carefully shepherded to publication by his co-authors, may herald an effective treatment for one of mankind's most enigmatic and agonizing diseases. Prospective, cont...
U-M team treating mouth wounds by engineering tissue grafts
...e testing a new procedure in which they can take a tiny
piece of a person's mouth lining, grow it into a d...table to the FDA. This special environment helps a tiny
piece of mucosal mouth lining grow to the size of a quarter within a few weeks, and a dollar bill wi...
Optics meeting tips: Internal fingerprints, no cell left behind, 3-D reality
...f Optical Microresonators," will provide a tour of tiny
devices for confining and controlling light and di...ll discuss recent advances in imaging and studying tiny
biomolecular structures using the whole range of the electromagnetic spectrum. To deepen basic unde...
Left and right ears not created equal as newborns process sound, finds UCLA/UA research
...ces at the University of Arizona, Sininger studied tiny
amplifiers in the outer hair cells of the inner ear. "When we hear a sound, tiny
cells in our ear expand and contract to amplify the vibrations," explained Sininger. "The inner hai...
1 2 3 4 5 6 7 8 9 10