It’s important to keep as still as possible during the scan, so that the images come out clear. the scanner will rotate around your head.you will need to lie on a bed that’s slowly moved into a CT scanner head first.You may also be given a contrast solution that helps to improve the quality of the images. Right before the scan, you will need to remove anything that contains metal, including jewellery and hairpins. You will likely receive a letter confirming your CT scan, which will tell you anything you need to do beforehand. The images produced by a CT scan provide detailed information about brain tissue and brain structures. Why am I having a brain CT scan?Ī CT scan can detect conditions of the brain, like stroke and vascular dementia. Find out more about MRI scans for the heart, also known as cardiac MRI scans.Ī CT scan uses X-rays to produce images, unlike an MRI scan which uses magnetic fields and radio waves.You will need to sign a checklist before you have it done to ensure it is safe for you to have the scan. You may not be able to have an MRI scan if you have a pacemaker or implantable defibrillator, but this will have been discussed with you beforehand. You may wish to tell the technician doing the scan if you have a fear of confined spaces, so that they can try to make you as comfortable as possible. Are brain MRI scans safe?Īn MRI scan is painless and safe. The scan may last between 15 and 90 minutes, depending on how many images of the brain are needed. you’ll be given earplugs or headphones so you can listen to music to distract you from the noise.the scanner will make loud tapping sounds. you'll be asked to lie on a bed that’s slowly moved head first into an MRI scanner.you'll need to keep still during the scan, so that the images come out clear.This allows the MRI scanner to see your brain in detail. You usually won't need to prepare for a brain MRI scan, but as it involves magnets you will need to remove anything that contains metal, including jewellery and hairpins.īefore the scan, you may be injected with a dye called contrast, through an a cannula which is placed into a vein in the arm. If you have any questions or concerns, you should talk to your doctor. It may also be used to investigate whether you have any other conditions, such as cancer.Īn MRI will be used to investigate why you’re experiencing symptoms. An MRI scan of the head produces a detailed image of the brain and brain stem.įrom your brain MRI scan, doctors can understand whether you’ve had a stroke or have vascular dementia, or both. MRI scans use magnetic fields and radio waves to produce images.
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