3377 results found
Medical tests
… Electronystagmography (ENG) On this page: Test Overview Why It Is Done How To Prepare How It Is Done … movements. ENG checks how well the eyes, inner ears , and brain help you keep your balance and position (such as when … whether there is damage or a problem in how the inner ear, brain, or nerves connecting them work. These problems may …
Medical tests
… Spinal Tap (Lumbar Puncture) On this page: Test Overview Why It Is Done How To Prepare How It Is Done … fluid ( cerebrospinal fluid, or CSF ) that surrounds the brain and spinal cord. During a spinal tap, a needle is … ), inflammation, cancer, or bleeding in the area around the brain or spinal cord (such as subarachnoid hemorrhage ). …
Medical tests
… Angiogram of the Head and Neck On this page: Test Overview Why It Is Done How To Prepare How It Is Done … to look at the large arteries in the neck that lead to the brain. An angiogram of the head (cerebral angiogram) can be … the four arteries (four-vessel study) carrying blood to the brain. During an angiogram, a thin, soft tube called a …
Medical tests
… Photon Emission Computed Tomography (SPECT) On this page: Test Overview Why It Is Done How To Prepare How It Is Done … tracer is located. A SPECT scan is often used to evaluate brain, head, and neck problems; to look at blood flow to the … degenerative bone diseases such as osteoporosis . Evaluate brain conditions such as Alzheimer's disease and other types …
Medical tests
… How It Is Done How It Feels Risks Results What Affects the Test Overview Positron Emission Tomography … emission tomography (PET) scan is done to: Study the brain's blood flow and metabolic activity. A PET scan can … disease , stroke , and schizophrenia . Find changes in the brain that may cause epilepsy . Evaluate the extent of some …
Health topics
… Health Tools What Is Carrier Screening? Who Should Be Tested? What If You Are a Carrier? Is the Test Accurate? … have. Canavan disease. This disease gradually destroys brain tissue. Cystic fibrosis. This disease causes very … of fat called ganglioside to build up in the cells of the brain and nervous system. Health Tools Health Tools help you …
Medical tests
… Doppler Ultrasound On this page: Test Overview Why It Is Done How To Prepare How It Is Done … Plaque in the carotid arteries can reduce blood flow to the brain. This may increase the risk of stroke. Guide treatment … umbilical cord, through the placenta , or in the heart and brain of the fetus. This test can show if the fetus is …
Medical tests
… Magnetic Resonance Angiogram (MRA) On this page: Test Overview Why It Is Done How To Prepare How It Is Done … is often used to look at the blood vessels that go to the brain, kidneys, and legs. Information from an MRA can be … caused by plaque) in the blood vessels leading to the brain. An aneurysm or tear ( dissection ) in the aorta , …
Medical tests
… Myelogram On this page: Test Overview Why It Is Done How To Prepare How It Is Done … disc). Inflammation of the membrane that covers the brain and spinal cord. Problems with the blood vessels to … There is a small risk of a seizure if the dye moves to the brain. So if you lie down, you need to keep your head raised …
Medical tests
… (EMG) and Nerve Conduction Studies On this page: Test Overview Why It Is Done How To Prepare How It Is Done … studies to find damage to the nerves that connect the brain and spinal cord to the rest of the body. (This is … speeds, or conduction velocities. Sensory nerves allow the brain to feel pain, touch, temperature, and vibration. Not …
