Published: Fri, 07 Mar 2014 02:10:34 GMT
Determining MRI RF heating safety is a complex process that requires complete understanding of the potential interactions between the MRI system, lead behavior, and individual patient characteristics. A comprehensive analysis was performed to evaluate a new MR-compatible SCS lead.
Published: Tue, 04 Mar 2014 17:59:33 GMT
Computer simulations have been developed for aircraft design to improve treatment of human airways. Computational Fluid Dynamics, or CFD, uses computer algorithms to solve the flow of air or fluids for various applications. These algorithms are typically applied toward the design of aircraft. While designing an aircraft, CFD is often considered both an accurate and less expensive approach before investing in building models and testing in air tunnels. But over the past decade or so, the application of CFD to biological flows to study medically-related problems, including respiratory disorders has gained a great deal of interest. The computer simulations traditionally used for aircraft design found use in treating health conditions such as cystic fibrosis, asthma, sleep apnea and snoring.
Published: Tue, 04 Mar 2014 12:15:25 GMT
Noninvasive imaging of carotid artery plaque with MRI can accurately predict future cardiovascular events like strokes and heart attacks in people without a history of cardiovascular disease, according to a new study. Researchers have long known that some arterial plaque is more dangerous because of its vulnerability to rupture. MRI can discern features of vulnerable plaque, such as a lipid core with a thin fibrous cap. This ability makes MRI a potentially valuable tool for identifying patients at risk for subsequent cardiovascular events.
Published: Tue, 04 Mar 2014 02:12:55 GMT
Veterans exposed to explosions who do not report symptoms of traumatic brain injury (TBI) may still have damage to the brain's white matter comparable to veterans with TBI, according to researchers. Veterans of recent military conflicts in Iraq and Afghanistan often have a history of exposure to explosive forces from bombs, grenades and other devices, although relatively little is known about whether this injures the brain. However, evidence is building – particularly among professional athletes – that subconcussive events have an effect on the brain.
Published: Mon, 03 Mar 2014 13:35:55 GMT
There are many reasons why in the era of cutting-edge medicine it is still difficult to cure cancer. A tumor may, for instance, consist of different tumor cell subpopulations, each of which has its own profile and responds differently to therapy – or not. Furthermore, the cancer cells and the healthy cells in the body interact and communicate with one another. How a tumor then actually develops and whether metastases form depends on which signals a tumor cell receives from its environment. With the development of a new method a team of reserachers has succeeded in comprehensively profiling and visualizing tumor cells from patient samples.
Published: Mon, 03 Mar 2014 13:35:49 GMT
The first two-photon, small molecule fluorogenic probe that can serve as a useful tool for the rapid assessment of an individual’s potential risk for Parkinson’s disease has been developed by scientists. The probe can detect with high precision the activity of Monoamine Oxidase B (MAO-B), an enzyme that is found in elevated levels in patients with Parkinson’s disease. This innovation paves the way for the development of less costly non-invasive technologies and devices to help monitor the risk and progression of Parkinson’s disease.
Published: Fri, 28 Feb 2014 21:06:22 GMT
Three-dimensional imaging of two different mouse models of Apert Syndrome shows that cranial deformation begins before birth and continues, worsening with time, according to a team of researchers who studied mice to better understand and treat the disorder in humans.
Published: Fri, 28 Feb 2014 21:06:18 GMT
A new study of Gulf War veterans found an association between poor sleep quality and reduced gray matter volume in the brain's frontal lobe, which helps control important processes such as working memory and executive function. "This study emphasizes the importance of seeking medical help if you are troubled by the poor quality of your sleep," said American Academy of Sleep Medicine President. "A board certified sleep medicine physician can identify the cause of your sleep problem and develop an effective treatment plan for you."
Published: Thu, 27 Feb 2014 17:14:53 GMT
Invasive and systemic cancer treatment is a necessary evil for many people with the devastating diagnosis. These patients endure therapies with ravaging side effects, including nausea, immune suppression, hair loss and even organ failure, in hopes of eradicating cancerous tissues in the body. If treatments targeted a patient's cancerous tissues, it could provide clinicians with an alternative to lessen the delivery of toxic levels of chemotherapy or radiation. Imagine the quality of life from such therapies for patients. Remarkably, research that began in space may soon result in such options here on Earth.
Published: Tue, 25 Feb 2014 15:09:47 GMT
A vascular disease called fibromuscular dysplasia (FMD), which can cause high blood pressure, kidney failure, stroke and other symptoms -- mostly in women -- is “poorly understood by many healthcare providers,” according to a Scientific Statement from the American Heart Association. FMD can cause narrowing, enlargement, bulging or tears in medium-size arteries, and occurs most commonly in arteries leading to the kidneys, and in carotid arteries in the neck that carry blood to the brain and eyes. It also can affect arteries supplying blood to the abdominal organs, legs or arms. Neurological complications include headaches, neck pain, tinnitus, strokes and mini strokes. A delay in diagnosis 'can lead to impaired quality of life and poor outcomes.'