Brain & Head MRI Scan: Complete Guide

A brain MRI scan is one of the most detailed imaging techniques available for examining the structures of the brain and head. Whether you are experiencing persistent headaches, memory concerns, or your doctor has recommended further investigation, a brain MRI provides high-resolution images without using ionising radiation. At Lola Health, we have partnered with scan.com to offer private brain MRI scans at over 150 centres across the UK, making it easier than ever to get the answers you need.

What a Brain MRI Scan Shows

A brain MRI scan produces detailed cross-sectional images of the brain, skull, and surrounding structures. It is particularly effective at detecting:

• Brain tumours and abnormal growths — both benign and malignant masses can be identified, along with their size, location, and impact on surrounding tissue.
• Stroke damage — areas of the brain affected by ischaemic or haemorrhagic stroke are clearly visible, helping clinicians assess the extent of injury.
• Multiple sclerosis (MS) lesions — characteristic white matter plaques that indicate demyelination.
• Aneurysms and vascular malformations — abnormal blood vessel structures that may pose a risk of rupture.
• Hydrocephalus — excess cerebrospinal fluid in the ventricles of the brain.
• Infections and inflammation — conditions such as encephalitis, meningitis, or brain abscesses.
• Degenerative conditions — changes associated with Alzheimer's disease, Parkinson's disease, and other neurodegenerative disorders.
• Structural abnormalities — congenital malformations, Chiari malformations, and other developmental anomalies.
• Pituitary gland disorders — tumours or abnormalities of the pituitary gland at the base of the brain.
• Inner ear and sinus conditions — depending on the scan protocol, structures adjacent to the brain can also be evaluated.

When You Might Need a Brain MRI Scan

Your GP or specialist may recommend a brain MRI if you are experiencing any of the following:

• Persistent or worsening headaches that do not respond to standard treatment
• Seizures or episodes of unexplained loss of consciousness
• Visual disturbances, including blurred vision, double vision, or partial vision loss
• Hearing loss, tinnitus, or balance problems
• Memory loss, confusion, or cognitive decline
• Weakness, numbness, or tingling in the limbs
• Personality or behavioural changes
• A family history of brain aneurysms or neurological conditions
• Follow-up after a head injury or concussion
• Monitoring a previously diagnosed brain condition

You do not always need a GP referral for a private brain MRI. Many people choose to book proactively for peace of mind, particularly if they have a family history of neurological disease.

How to Prepare for a Brain MRI Scan

Preparing for a brain MRI is straightforward. Here are the key steps:

• Metal and implants: Inform the scanning centre about any metal implants, pacemakers, cochlear implants, or metal fragments in your body. MRI uses powerful magnets, so certain implants may be incompatible.
• Clothing: You will typically be asked to change into a hospital gown. Avoid wearing jewellery, watches, or clothing with metal fastenings.
• Eating and drinking: For most brain MRI scans, you can eat and drink normally beforehand. If contrast dye is being used, you may be asked to fast for a few hours.
• Medications: Continue taking your regular medications unless specifically advised otherwise.
• Claustrophobia: If you feel anxious about enclosed spaces, let the centre know in advance. Many centres offer open or wide-bore MRI scanners, and mild sedation may be available.
• Arrive early: Plan to arrive 15 to 20 minutes before your appointment to complete any necessary paperwork.

What to Expect During the Scan

Understanding what happens during a brain MRI can help ease any anxiety:

1. Check-in and screening: You will complete a safety questionnaire to confirm you are safe to enter the MRI room.
2. Positioning: You will lie on a padded table that slides into the scanner. A head coil (a device that fits around your head) will be placed to improve image quality.
3. During the scan: The scanner produces loud knocking and humming sounds. You will be given earplugs or headphones. It is essential to remain as still as possible throughout.
4. Duration: A standard brain MRI typically takes between 20 and 45 minutes, depending on the sequences required.
5. Contrast dye: If contrast is needed, a small cannula will be inserted into your arm to inject gadolinium-based contrast, which helps highlight certain structures.
6. Communication: You will have a call button and can speak to the radiographer at any time through an intercom.
7. After the scan: You can usually resume normal activities immediately. Results are typically reviewed by a consultant radiologist, and a report is sent to you and your referring clinician.

How Much Does a Brain MRI Scan Cost?

Private brain MRI scans in the UK typically cost between £350 and £900, depending on the provider and location. Through Lola Health, you can book a brain MRI scan at a competitive price with access to over 150 scanning centres nationwide. Our pricing is transparent with no hidden fees, and your scan includes a full radiologist report.

Waiting times on the NHS for non-urgent brain scans can stretch to several weeks or months. A private scan through Lola Health often means you can be seen within days, giving you faster access to answers and peace of mind.

Brain MRI and Blood Testing

While a brain MRI provides structural imaging, certain blood tests can offer complementary insights into your neurological and overall health. Consider pairing your brain MRI with relevant blood work:

• Inflammation markers (CRP, ESR): Elevated inflammatory markers may indicate an underlying condition affecting the brain, such as vasculitis or infection. If blood results show raised inflammation alongside neurological symptoms, an MRI can help identify the cause.
• Thyroid function (TSH, T3, T4): Thyroid disorders can mimic neurological symptoms such as fatigue, brain fog, and cognitive decline. A thyroid blood test helps rule out hormonal causes before pursuing imaging.
• Vitamin B12 and folate: Deficiencies in B12 can cause neurological symptoms including numbness, tingling, and memory problems. If blood tests reveal a deficiency, an MRI may be recommended to assess for any structural changes.
• Full blood count (FBC): Abnormalities in blood cells can point to conditions that affect the brain, such as anaemia or blood disorders.
• Liver and kidney function: These tests are particularly important if contrast dye is being considered, as gadolinium is processed by the kidneys.
• HbA1c and blood glucose: Diabetes and metabolic conditions can affect brain health over time. Monitoring blood sugar levels helps build a complete picture of your health.

Start with a Lola Health blood test to check your inflammation markers (CRP), thyroid function, vitamin B12, and HbA1c. If results suggest further investigation, a brain MRI can provide the structural detail your blood results can't show. Peak Insights 70 covers these markers across 70 biomarkers.

At Lola Health, we offer a range of full blood tests that can be combined with your MRI scan for a thorough assessment of your health.

Considering a broader check? Read our full body MRI scan guide to see what a complete MRI screening covers, or explore the Peak 70 + Full Body MRI bundle for the most thorough health check available.

Frequently Asked Questions

Is a brain MRI scan safe?

Yes. MRI does not use ionising radiation, making it one of the safest imaging techniques. The main consideration is the strong magnetic field, which means people with certain metal implants may not be suitable candidates.

How long does a brain MRI take?

A typical brain MRI takes between 20 and 45 minutes. More complex studies with contrast or additional sequences may take slightly longer.

Will I need contrast dye?

Not always. Contrast dye (gadolinium) is used when the radiologist needs more detailed images of blood vessels, tumours, or inflammation. Your clinician or the scanning centre will advise whether contrast is needed.

Can I have a brain MRI if I am claustrophobic?

Yes. Many scanning centres offer wide-bore or open MRI scanners that are less confining. You can also discuss sedation options with the centre if needed.

Do I need a GP referral for a private brain MRI?

No. You can book a private brain MRI directly through Lola Health without a referral. However, if you have existing medical records or imaging, bringing them along can be helpful.

When will I get my results?

Results are typically available within a few working days. A consultant radiologist reviews the images and produces a detailed report, which is shared with you and your referring clinician if applicable.

Can a brain MRI detect all brain conditions?

While MRI is extremely detailed, no single test can detect every condition. Some functional or biochemical brain disorders may require additional tests such as PET scans, EEGs, or blood tests for a complete assessment.