Published: Thu, 21 May 2015 16:09:26 GMT
A highly sensitive imaging technique for non-invasive screening of lymph nodes for metastatic cancer has been developed by researchers. The new imaging technique -- so far tested in mice -- offers a rapid tool to noninvasively identify cancer's spread at its earliest stages.
Published: Thu, 21 May 2015 12:24:56 GMT
New data suggest that thickening of the valve leaflets following implantation of a transcatheter or surgical aortic valve bioprosthesis is relatively rare, not linked to short-term clinical events, and not unique to any one type of valve. Longer-term follow-up and larger studies looking specifically at this issue are warranted, experts said at a special session devoted to the emerging understanding of the phenomenon.
Published: Wed, 20 May 2015 20:03:10 GMT
Data from the ILUMIEN II trial found that guidance from optimal coherence tomography was associated with comparable stent expansion as guidance from intravascular ultrasound in patients undergoing percutaneous coronary intervention. Results from the study were presented today at EuroPCR 2015, the official annual meeting of the European Association for Percutaneous Cardiovascular Interventions.
Published: Wed, 20 May 2015 15:42:12 GMT
America's first and only proton therapy center to treat patients exclusively with pencil-beam scanning is reporting exceptional results in delivering cancer treatment since opening for patient care just more than a year ago.
Published: Tue, 19 May 2015 17:26:22 GMT
A dramatic video has captured the behavior of cytotoxic T cells -- the body's 'serial killers' -- as they hunt down and eliminate cancer cells before moving on to their next target.
Published: Tue, 19 May 2015 16:18:12 GMT
Alzheimer disease (AD) is the most common cause of dementia, with a worldwide prevalence of about 25 million in 2010, expected to be doubled by 2030 because of increased life expectancy. The earliest recognizable pathological event in AD is cerebral amyloid-? aggregation (protein fragments that clump together to form plaque). New research analyzes the prevalence of the plaque amyloid among adults of varying ages, with and without dementia, and its association with cognitive impairment.
Published: Mon, 18 May 2015 16:14:46 GMT
Neuroscientists have made an important advance in studying the human brain with functional magnetic resonance imaging (fMRI). This imaging technique is used in research to investigate the interactions between different brain regions – but indirectly: fMRI does not measure neuronal processes, but marks active brain areas on the basis of their blood flow. Now researchers have shown that interactions measured with fMRI indeed reflect correlated nerve cell activity, and in what form they do so. This will make the imaging method even more attractive for neuroscience research.
Published: Mon, 18 May 2015 12:18:37 GMT
A new test will allow patients suspected of having lung cancer to be subjected to fewer and less-invasive tests to determine if they have the disease.
Published: Thu, 14 May 2015 17:28:17 GMT
A biocompatible polymer selectively targets and lights up cancer tumors for a noninvasive imaging system, investigators report. Generating photoacoustic signals requires an ultrafast laser pulse to irradiate a small area of tissue. By 'listening' to the pressure differences created by the acoustic waves, researchers can reconstruct and visualize the inner structures of complex objects such as the brain and cardiovascular systems. Diagnosing cancer with photoacoustic imaging requires contrast agents that deeply penetrate tissue and selectively bind to malignant cells.
Published: Thu, 14 May 2015 16:19:29 GMT
A study has been conducted of the usefulness and efficiency of portable ultrasound in detecting the presence of minor fractures in patients presenting to a minor injuries unit. Analysis showed that 85% of patients with a fracture confirmed by X-ray had injuries detected through ultrasonography. The authors say emergency clinicians could rule in fractures by studying the ultrasound images but ruling out fractures is still the job of radiographers.