Tag: "electromagnetic" at medical news
Home health care devices focus of FDA Conference at UH
...(i.e. misuse of equipment) and environmental (i.e. electromagnetic
interference) factors; the need for updating durable medical equipment (i.e. walkers, wheel chairs, hospital beds) that do not require FDA regulation; creating a device-labeling repository that would provide easy online access to device instructions;...
Speeding up CT scans with cellphone technology, ultrasound warning signal for breast cancer
...from all angles. This fixed-system concept reduces electromagnetic
interference between the linear accelerator and MRI. A finished prototype is expected by December 2007. According to the researchers, the machine will improve the accuracy of radiation treatments for solid tumors, thereby reducing side effects. I...
Dartmouth's alternative breast imaging techniques sort abnormal from normal tissue
...ng cancer. The study finds that the new methods of electromagnetic
imaging offer a high contrast and the ability to d... at Dartmouth-Hitchcock Medical Center (DHMC). The electromagnetic
techniques are electrical impedance spectral imaging (EIS), microwave imaging spectroscopy (MIS), an...
No increased risk of certain cancers from electromagnetic fields among energy workers
...nvironmental Medicine. Exposure to low frequency electromagnetic
fields of 50 to 60 Hz has been implicated in an in...gnetic fields. Women exposed to medium frequency electromagnetic
fields were more likely to develop brain cancer than women with background frequency levels. But ...
NIST's stretching exercises shed new light on nanotubes
...and the manipulation of individual nanotubes using electromagnetic
Leading European experts in magnetic resonance for animals
... inside a Faraday cage to protect it from external electromagnetic
interference. The AvanceII 600 LC-NMR/MS is aimed more towards basic research. It will be the first equipment in Spain to combine integrally magnetic resonance techniques, liquid chromatography and mass spectrometry. It will include an ultra-shielde...
BC physicists transmit visible light through miniature cable
...ucture encloses energy and lets the cable transmit electromagnetic
signals with wavelengths much larger than the diameter of the cable itself. With this design in mind, the physicists developed what they called a "nanocoax" a carbon nanotube-based coaxial cable with a diameter of about 300 nanometers. By compariso...
Functional brain imaging insights from UC San Diego grad student
...etermine what parts of the brain are producing the electromagnetic
fields that are measured by functional brain imagi...EG). MEG and EEG use an array of sensors to take electromagnetic
field measurements from on or near the scalp surface with excellent temporal resolution. Using this ...
Cell phone use not linked to cancer risk
...health risks among users. Cell phone antennas emit electromagnetic
fields that can penetrate into the human brain, and scientists have wondered if this might cause tumors in the head or neck. Joachim Schz, Ph.D., of the Danish Institute of Cancer Epidemiology in Copenhagen, Denmark, and colleagues performed a study...
T-ray breakthrough could make detecting disease far easier
A breakthrough in the harnessing of 'T-rays' - electromagnetic
terahertz waves - which could dramatically improv...ap between the microwave and infrared parts of the electromagnetic
spectrum. Materials interact with radiation at T-ray frequencies in different ways than with radi...
MRIs made safe for people with modern defibrillators and pacemakers
...MRI. The Hopkins team reduced the strength of the electromagnetic
field by half, from as much as 4 watts per kilogram to 2 watts per kilogram per patient. "This lower-energy scan still provided images of sufficient quality to make an accurate diagnosis in more than 90 percent of cases tested," Halperin said in ...
Polymers show promise for lab-on-a-chip technology
...al muscles" that can convert thermal, chemical and electromagnetic
stimuli into mechanical energy, Elias said. LCPs are polymers made from liquid crystalline molecules, which are well-known for their use in display applications, such as laptop computer screens, where they are used for their unique optical properties...
Medical device test center expands capabilities to help reduce potential interference
...ur increasingly wireless world, the air is full of electromagnetic
signals carrying data from one place to another. ...plantable medical devices and systems that radiate electromagnetic
energy. The Center, which has focused on EAS systems for more than a decade, has recently expanded ...
Cell phone emissions excite the brain cortex
...ion people in the world use cell phones which emit electromagnetic
fields (EMFs). Though many studies have looked at ...S) to investigate brain function under exposure to electromagnetic
fields from a common type of cell phone. Their study reports the effects of EMF exposure on brain ph...
Terahertz imaging may reduce breast cancer surgeries
...used light waves in a newly explored region of the electromagnetic
spectrum--the terahertz region--to examine excised...between the infrared and microwave portions of the electromagnetic
spectrum. The researchers found that by placing a slice of excised breast tissue on a special quartz...
Envisat making first direct measurements of ocean surface velocities
...embedded in the radar signal: the Doppler shift in electromagnetic
waves reflected from the water surface. This shift occurs due to changing relative velocities, experienced in everyday life in the way the pitch of a siren on a passing ambulance goes up as it approaches, then goes down as the vehicle recedes away. T...
Yale expands research using magnetic stimulation for schizophrenia
...nistered while persons are awake by positioning an electromagnetic
coil on the scalp. "It appears that stimulating populations of neurons once per second with TMS over many minutes modestly reduces the capacity of these neurons to activate each other," Hoffman said. "As a result, neural populations as a whole becom...
Beaming pain relief
...imeter wave therapy, which directs a low-intensity electromagnetic
beam to the skin, has been used for more than 25 years in Eastern Europe, where it is credited with alleviating more than 50 different conditions, ranging from heart disease to skin wounds and even cancer. Doctors there believe that the waves boost t...
Using mobile phones reduces error rate in hospital care
...erent frequency," Ruskin said. "The small risks of electromagnetic
interference between mobile telephones and medical devices should be weighed against the potential benefits of improved communication." He said the reported 2.4 percent prevalence of electronic interference with life support devices such as ventilato...
Researchers develop portable 'vein finder' for faster, more accurate injections
...he Doppler effect is a phenomenon that occurs when electromagnetic
and sound waves interact with a moving object, altering wavelengths and frequency. For example, a police radar gun sends microwave signals to a moving car, and when signals bounce back, the change in their frequency provides a measurement used to det...