For such a scan, you’ll would have to lie on a narrow table that slides into a small chamber. X-rays pass through your brain from various angles, and a computer uses this information to create cross-sectional images (slices) of your brain. It’s currently used chiefly to rule out tumors, strokes and head injuries.
Uses radio waves and a strong magnetic field to produce detailed images of your brain. You lie on a narrow table that slides into a tube-shaped MRI machine, which makes loud banging noises while it produces images. MRIs are currently used primarily to rule out other conditions that may account for cognitive symptoms.
During a PET scan, you’ll be injected in a vein with a low-level radioactive tracer. You’ll lie on a table while an overhead scanner tracks the tracer’s flow through your brain. The tracer may be a special form of glucose (sugar) that shows overall activity in various brain regions. This can show which parts of your brain aren’t functioning well.
Functional magnetic resonance imaging or functional MRI (MRI) is a functional neuro-imaging procedure using MRI technology that measures brain activity by detecting associated changes in blood flow. This technique relies on the fact that cerebral blood flow and neuronal activation are coupled. When an area of the brain is in use, blood flow to that region also increases.
The primary form of fMRI using the Blood-oxygen-level dependent (BOLD) contrast is a type of specialized brain and body scan that maps neural activity in the brain or spinal cord by imaging the change in blood flow related to energy use by brain cells. fMRI has come to dominate brain mapping research because it does not require people to undergo shots, surgery, or to ingest substances, or be exposed to radiation.
Is a 3D modeling technique used in neurosurgery to visually represent neural tracts using data collected by diffusion tensor imaging (DTI). It uses special techniques of magnetic resonance imaging (MRI) and computer-based image analysis. The results are presented in two- and three-dimensional images.In addition to the long tracts that connect the brain to the rest of the body, there are complicated neural networks formed by short connections among different cortical and subcortical regions.
During this sleep study, you’re hooked up to equipment that monitors your heart, lung and brain activity, breathing patterns, arm and leg movements, and blood oxygen levels while you sleep. You may have a full-night study, in which you’re monitored all night, or a split-night sleep study.
In a split-night sleep study, you’ll be monitored during the first half of the night. If you’re diagnosed with obstructive sleep apnea, staff may wake you and give you continuous positive airway pressure for the second half of the night.This test can help your doctor diagnose obstructive sleep apnea and adjust positive airway pressure therapy, if appropriate. This sleep study can also help rule out other sleep disorders, such as periodic limb movements of sleep or narcolepsy, which also can cause excessive daytime sleepiness, but require different treatment.