Flavonoids are responsible for pigments in many fruits and vegetables. Studies have shown that they may help reduce the risk of Parkinson's disease, cardiovascular disease and stroke. A particularly valuable flavonoid in onions is quercetin, which acts as an antioxidant that may be linked to preventing cancer. âIt also might have heart health benefits, though more studies need to be done,â said Angela Lemond, a Plano, Texas-based registered dietitian nutritionist and spokesperson for the Academy of Nutrition and Dietetics.
Magnetic resonance imaging (MRI) is very safe and most people can have the procedure, including pregnant women and babies. However, there are some instances where an MRI scan may not be recommended, because the strong magnets used during the scan can affect any metal implants or fragments in your body. Before having an MRI scan, you should tell medical staff if: you think you have any metal in your body. you're pregnant or breastfeeding.
Why it's done. MRI is a noninvasive way for your doctor to examine your organs, tissues and skeletal system. It produces high-resolution images of the inside of the body that help diagnose a variety of problems. MRI of the brain and spinal cord. MRI is the most frequently used imaging test of the brain and spinal cord. A special type of MRI is the functional MRI of the brain (fMRI). It measures the metabolic changes that occur within the brain.