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A brain MRI is a non-invasive procedure that enables doctors to closely examine various areas of the brain, providing a detailed view of the tissues and structures within. This imaging technique helps identify issues like tumors, infections, and signs of degenerative diseases. In this article, we’ll walk you through the entire process—from understanding how a brain MRI works to what you can expect during the procedure. We’ll also guide you on how to prepare for your appointment, access your images and results, and offer tips to help you better understand these findings with your doctor.
Magnetic resonance imaging (MRI) helps doctors assess the health of organs, blood vessels, and tissues, monitor symptoms, and track treatment progress. A brain MRI captures detailed images from multiple angles to give doctors a thorough view of brain tissue.
MRI scans use a strong magnetic field and radiofrequency current to adjust proton rotations within tissues. A radiologist can then review the captured images for irregularities or disease.
A brain MRI scan evaluates the soft tissues of the brain and spinal cord, including the cerebrum, brain stem and cerebellum, for structural abnormalities or to help diagnose conditions such as:
While both a brain MRI and an fMRI use similar magnetic and radiowave technology to capture detailed brain images, they serve distinct purposes. A brain MRI focuses on the structure of the brain, producing high-resolution images that help detect physical issues like tumors, bleeding, or structural abnormalities. In contrast, an fMRI highlights brain activity by measuring blood flow, which changes with neural activity. This makes fMRI useful for observing brain function, tracking activity levels in response to stimuli, or monitoring changes over time. Both scans are non-invasive and provide crucial insights but differ fundamentally in their focus: one on structure, the other on function.
Upon entering the MRI room, you will notice the long, cylindrical MRI machine, which features a table that slides in and out of its opening. You will be asked to lie down on the table, positioning your head and neck inside the machine.
If your procedure requires contrast fluid, you will receive it prior to the scan. Once you are comfortably positioned, the MRI will begin. Expect some noise during the procedure; however, it is important to remain still to ensure the clearest images are captured. You may request headphones with calming music to help muffle the machine’s sounds. Throughout the scan, the technologist will provide instructions and will be available to communicate with you via speakers inside the machine.
A typical brain MRI takes between 30 to 60 minutes to complete, although it may take a bit longer if you are receiving contrast fluid either orally or intravenously.
Knowing what to expect and how to prepare can help ease any pre-appointment anxiety. Below, we outline what to do before your MRI scan, what to expect during the procedure and how you’ll feel after the scan.
You’ll likely want to review your brain MRI results as soon as possible. Below is a guide on timing, who interprets them, and how to understand your results.
Most patients receive their results within a week, although the exact timing can depend on the nature of the concern and the facility where the MRI takes place. Your doctor’s and radiologist’s schedules can also impact how quickly you get your results, as many patients wait until their follow-up doctor’s appointment to receive their results.
PocketHealth provides faster access, allowing you to see your results as soon as they’re uploaded by the radiologist, giving you time to review findings and prepare questions. For added support, MyCare Navigator generates questions to ask your doctor based on findings in your report and highlights any follow-up recommendations found in the report.
A radiologist specializing in brain MRI will assess your images and create a detailed report. This report then goes to your referring doctor, who will provide additional interpretations based on your medical history.
Viewing your brain MRI images and report before your follow-up can help you prepare for discussions with your doctor. Report Reader can clarify complex medical terms in your report, helping you to have more informed conversations with your doctor.
A brain MRI typically requires around 30 minutes inside the machine, though some complex scans can take an hour or more.
MRIs are low-risk, using no ionizing radiation. However, patients with metal implants should inform their doctor, as the MRI’s magnetic properties could cause complications. Side effects are rare, though some may experience an allergic reaction to contrast dye.
A brain MRI provides a detailed view of your brain, helping your doctor assess your health, monitor symptoms, and track disease progression or treatment. Accessing your records early through PocketHealth can reduce the stress that many patients face while waiting for results and help you prepare questions for your next appointment.
