Published: Tue, 30 Jun 2015 19:14:52 GMT
The spinal cord engages in its own learning of motor tasks independent of the brain, according to an innovative imaging study. The results of the study may offer new opportunities for rehabilitation after spinal cord injury.
Published: Fri, 26 Jun 2015 13:55:28 GMT
Congenital heart experts have successfully integrated two common imaging techniques to produce a three-dimensional anatomic model of a patient's heart. This is the first time the integration of computed tomography (CT) and three-dimensional transesophageal echocardiography (3DTEE) has been used in this way. A proof-of-concept study also opens the way for these techniques to be used in combination with a third tool -- magnetic resonance imaging (MRI).
Published: Thu, 25 Jun 2015 17:11:48 GMT
New results in animals highlight a major safety concern regarding a class of magnetic resonance imaging (MRI) contrast agents used in millions of patients each year. The study adds to concerns that repeated use of specific "linear"-type gadolinium-based contrast agents (GBCAs) lead to deposits of the heavy-metal element gadolinium in the brain.
Published: Thu, 25 Jun 2015 12:13:00 GMT
Fructose not only results in a lower level of satiety, it also stimulates the reward system in the brain to a lesser degree than glucose. This may cause excessive consumption accompanied by effects that are a risk to health, report researchers. Various diseases have been attributed to industrial fructose in sugary drinks and ready meals.
Published: Wed, 24 Jun 2015 17:24:31 GMT
A protein encoded by the gene glypican-1 (GPC1) present on cancer exosomes may be used as part of a potential non-invasive diagnostic and screening tool to detect early pancreatic cancer, potentially at a stage amenable to surgical treatment, according to a new study.
Published: Wed, 24 Jun 2015 13:06:05 GMT
A digital map of the aging brain could aid the diagnosis of Alzheimer's disease and other neurodegenerative disorders in older people, a study suggests. The atlas created using images from MRI scans of older people could aid diagnosis by comparing the patients' scans with a detailed map of the healthy aging brain.
Published: Wed, 24 Jun 2015 11:10:12 GMT
A form of 'virtual-reality' therapy may help people with alcohol dependence reduce their craving for alcohol, a new study suggests. The findings come from a small study of just 10 patients. But researchers said they are optimistic about the potential for virtual reality as a therapy for alcohol use disorders.
Published: Tue, 23 Jun 2015 20:10:56 GMT
An annual exam using a key imaging technology could spare patients with lung nodules from unnecessary tests and surgery. The study authors found the imaging technology, called low-dose computed tomography (LDCT), to be a safe and effective screening tool to monitor those with nonsolid lung nodules, which in some cases are precursors to cancer. Lung nodules are small tissue masses in the lungs that can be benign or cancerous.
Published: Tue, 23 Jun 2015 11:22:39 GMT
People who have nonsolid lung nodules can be safely monitored with annual low-dose computed tomography screening, according to a new study. Researchers said the findings could help spare patients from unnecessary surgery and additional imaging.
Published: Mon, 22 Jun 2015 16:46:22 GMT
An agent called PSMA-617 is capable of attaching specifically to prostate cancer cells. This agent can be labeled with various radioactive substances. When chemically bound to a weakly radioactive diagnostic radionuclide, it can detect prostate tumors and their metastases in PET scans. If labeled with a strongly radioactive therapeutic radionuclide, PSMA-617 can specifically destroy cancer cells. A first clinical application of this radiopharmaceutica has now delivered promising results.
Published: Mon, 22 Jun 2015 16:27:15 GMT
Most women -- about 86 percent -- with early-stage breast cancer will undergo imaging to determine if the cancer has metastasized, despite international guidelines that recommend against testing, found a Canadian study.
Published: Fri, 19 Jun 2015 19:21:56 GMT
A research group has developed a live-imaging method for simultaneous measurements of the transcriptional activity and nuclear position of endogenous genes. This method is used to detect sub-genome-wide mobility changes that depend on the activity of a pluripotency-related gene in mouse embryonic stem cells.
Published: Fri, 19 Jun 2015 16:18:28 GMT
The thickness of the brain's cerebral cortex could be a key to unlocking answers about intellectual development in youth with Down syndrome. It could also provide new insights to why individuals with this genetic neurodevelopmental disorder are highly susceptible to early onset Alzheimer's disease later in life.
Published: Wed, 17 Jun 2015 18:42:39 GMT
Brain surgery is famously difficult for good reason: When removing a tumor, for example, neurosurgeons walk a tightrope as they try to take out as much of the cancer as possible while keeping crucial brain tissue intact — and visually distinguishing the two is often impossible. Now researchers report they have developed an imaging technology that could provide surgeons with a color-coded map of a patient’s brain showing which areas are and are not cancer.
Published: Tue, 16 Jun 2015 23:21:09 GMT
Neuroscientists have refined a map showing which parts of the brain are activated during head rotation, resolving a decades-old puzzle. Their findings may help in the study of movement disorders affecting the head and neck.
Published: Tue, 16 Jun 2015 11:23:14 GMT
Post-concussion psychiatric disorders like depression, anxiety and irritability can be extremely disabling for those among the nearly 3.8 million people in the United States who suffer concussions every year. The mechanisms underlying these changes after concussion--also known as mild traumatic brain injury--are not sufficiently understood, and conventional MRI results in most of these patients are normal. Now, a new MRI study has found distinct injury patterns in the brains of people with concussion-related depression and anxiety.
Published: Tue, 16 Jun 2015 11:19:13 GMT
Adenomas are rare liver tumors, a certain percentage of which can become malignant. Using a new MR (magnetic resonance) technique, it is now possible to classify adenomas without subjecting patients to invasive tissue sampling procedures.
Published: Mon, 15 Jun 2015 18:22:44 GMT
The effort to secure a stable, domestic source of a critical medical isotope has reached an important milestone as researchers demonstrated the production, separation and purification of molybdenum-99 (Mo-99).
Published: Thu, 11 Jun 2015 16:31:00 GMT
A new article has called for temperature changes in the tissues of the body to be used as a safety metric for mobile devices operating at mmWave frequencies, rather than power density, now the standard.
Published: Thu, 11 Jun 2015 15:44:06 GMT
The atypical trajectory of cortical/brain development in autism spectrum disorder extends well beyond young childhood and into late adolescence and young adulthood, a new study demonstrates.