
An abnormal lumbar MRI can indicate dislocation of the disc even by 1 mm - the beginning of a pathological process called protrusion.

A contrast agent is injected into the vein before the procedure, then the tomographic examination is performed. In some cases, your doctor may request an MRI with contrast.

Magnetic Resonance Imaging (MRI) – spine.Magnetic resonance imaging (MRI) - shoulder.Media/UHS-website-2019/Patientinformation/Scansandx-rays/MRI-scans/MRI-knee-foot-or-ankle-scan.pdf Magnetic resonance imaging (MRI) knee, foot, or ankle scan.Magnetic resonance imaging (MRI) - cardiac (heart).Magnetic resonance imaging (MRI) - breast.radiology/getting-a-mri-of-your-head-now-how-long-will-that-take-again Getting an MRI of the head? Now, how long will that take again? (2016).You can learn more about how we ensure our content is accurate and current by reading our editorial policy. Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. If you had a sedative, you’ll need somebody to drive you and you won’t be able to drink alcohol or operate heavy machinery for at least 24 hours.
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You’ll be free to go immediately after your procedure.

The radiographer may ask you to hold your breath during some shorter scans. Each scan may take from seconds to about 4 minutes, according to the National Health Service. You’ll likely hear loud tapping noises and may be given earplugs or headphones. You’ll remain still as the machine scans your body. The radiographer operating the MRI will be in a separate room, but you’ll still be able to talk with them through an intercom. A coil may be placed over the part of your body being scanned to help produce a clearer image. You may also be given a sedative or contrast dye through an IV before your procedure.ĭuring the scan, you’ll lie on a bed inside the cylindrical MRI scanner. You may be asked to change into a hospital gown to ensure you don’t have any metal on your clothes that may interfere with the MRI. When you arrive at the hospital, you’ll likely be asked to fill out a questionnaire with your medical history and to confirm that you don’t have a metal implant or pacemaker that may prevent you from having an MRI scan.
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Your doctor or healthcare professional may ask you to avoid eating or drinking up to 4 hours before your MRI scan, according to the National Health Service.
