Search results
Results from the WOW.Com Content Network
Iron overload (also known as haemochromatosis or hemochromatosis) is the abnormal and increased accumulation of total iron in the body, leading to organ damage. [1] The primary mechanism of organ damage is oxidative stress, as elevated intracellular iron levels increase free radical formation via the Fenton reaction.
The FDA has issued a public warning notice stating that breast thermography is not an alternative to mammography [8] and has ordered Joseph Mercola to stop making excessive claims for thermography. [9] Thermography is discouraged in North America by the American Cancer Society, radiologists and the FDA for early breast cancer detection.
This allows for faster and more objective assessment of the effects of anticancer drugs. In Alzheimer's disease , MRI scans of the entire brain can accurately assess the rate of hippocampal atrophy, [ 38 ] [ 39 ] while PET scans can measure the brain's metabolic activity by measuring regional glucose metabolism, [ 33 ] and beta-amyloid plaques ...
Images obtained with PET (axial sections) that show the effects of chronic drug exposure on various proteins involved in dopamine (DA) neurotransmission and on brain function (as assessed by brain glucose metabolism). While some effects are common to many drugs of abuse,...others are more specific.
Positron emission tomography (PET) [1] is a functional imaging technique that uses radioactive substances known as radiotracers to visualize and measure changes in metabolic processes, and in other physiological activities including blood flow, regional chemical composition, and absorption.
In general, fMRI studies acquire both many functional images with fMRI and a structural image with MRI. The structural image is usually of a higher resolution and depends on a different signal, the T1 magnetic field decay after excitation. To demarcate regions of interest in the functional image, one needs to align it with the structural one.
Image credits: Gilbert Flores/Variety/Getty Images Celebrity use and social media promotion of Ozempic have reportedly contributed to a shortage of the drug, which is intended to treat diabetes.
Magnetic resonance angiography (MRA) generates pictures of the arteries to evaluate them for stenosis (abnormal narrowing) or aneurysms (vessel wall dilatations, at risk of rupture). MRA is often used to evaluate the arteries of the neck and brain, the thoracic and abdominal aorta, the renal arteries, and the legs (called a "run-off").