MRI stands for Magnetic Resonance Imaging. It is a medical imaging technique that is non-invasive and painless. The MRI brain scan creates a clear view of the brain, along with the inner structure and blood vessels. It is radiation-free, unlike Computed Tomography (CT) scans, and is a more sensitive imaging technique compared to other methods.
When cancer is diagnosed at an early stage before it metastasizes, there is a better success rate for treatment and complete remission. An MRI brain scan will be able to detect any new growths or changes that might pose health risks in the future.
When the cells in your brain grow in an uncontrolled way, it is deemed abnormal and considered a growth or tumor. You can have a non-cancerous tumor or a cancerous tumor. Tumors are graded as low (grade 1 or 2) or high (grade 3 or 4). Non-cancerous tumors are low-grade and cancerous tumors are high-grade.
Brain tumors might present with symptoms like:
As there are so many different types of scans in medical imaging, common questions that come to mind include: How does an MRI brain scan work, and is an MRI or CT scan better for the brain?
An MRI is a scan that uses magnetic waves and radio waves to generate a detailed view of a body part. While the physics of how MRIs work can be a little complicated, the basics are outlined below.
The MRI machine creates strong magnetic signals, causing the atoms in our body to align in a singular, uniform direction. Subsequently, radio waves are sent from the machine, moving the atoms out of their initial position. When the radio waves are turned off, the atoms return to their original position and send radio signals back. The computer receives these signals and uses them to create an image of the body part.
MRIs are considered more sensitive for soft tissues of the body, this is why an MRI scan is preferred over a CT scan or X-ray of the brain. They produce clearer images of the brain and are better at detecting tumors compared to CT scans.
MRIs are considered more sensitive for soft tissues of the body, which is why they are preferred over CT scans or X-rays of the brain. They produce clearer images of the brain and are better at detecting tumors than CT scans.
There are multiple types of MRI scans all using different methods to give a better visualization of the brain.
Standard MRI: Uses magnetic fields and radio waves to construct an image of the brain and its structures.
Functional MRI (fMRI): Detects blood flow changes in the brain allowing for the measurement of brain activity.
Magnetic Resonance Spectroscopy (MRS): A technique used to quantify the amount of metabolites in tissues. This method can determine the tumor type.
Diffusion Tensor Imaging (DTI): An MRI method used specifically for imaging of the white matter tracts of the brain
MRI scans and CT scans are both imaging tools used in the field of healthcare.
MRI scans:
CT scans:
The general consensus in the medical field is that MRI scans are better for soft tissue organs such as the brain. Compared to a CT scan, MRI generates a clearer image of the brain. MRIs can distinguish between tissue types, which is ideal as they can identify cancerous and non-cancerous tissue types.
Opting for an MRI scan of the brain offers several benefits. In addition to producing high-resolution images, it can show contrast between tissues, which allows radiologists to differentiate between healthy and benign/cancerous tissue. It is a radiation-free, non-invasive test that provides a clear image of the brain and its structures.
A standard MRI scan without contrast or anesthesia has no side effects. Since there is no radiation, dye, or medication involved in the scan, you will not have to worry about any side effects after the MRI scan.
If your scan involves contrast, you might feel nauseous and dizzy and develop a rash or a headache. Some people can be allergic to the contrast dye, and if you know you have this allergy, please inform the radiographer before the scan.
Before you arrive for your MRI scan, there are some things to note:
During the scan, you will lie down on a table and move into the machine. The machine makes a loud banging noise, but the technician will offer you earbuds to reduce the noise. If the machine is compatible with headphones, you can request some music to make your experience a bit more comfortable. An automated voice will give you breathing instructions throughout the scan.
In total, an MRI brain scan should last 30 - 60 minutes, but it could be longer if you are getting a scan with contrast. To prevent prolonging the scan duration, try to stay as still as possible and minimize bathroom breaks.
Arrive at least 30 minutes early to the scan center to check in with the receptionist and prevent any delays. Bring your Government-Issued Photo ID and wear loose-fitting clothes.
Alternatively, the technician can provide you with appropriate clothing to change into. The radiographer will greet you and discuss your medical history and medications before the scan.
The MRI brain scan takes approximately 30-60 minutes. At Ezra, we do not offer an MRI brain scan alone; it is included in our full body scan, which also takes about one hour in total.
After the scan, you will be contacted by a medical provider working with Ezra within roughly a week. On the day of the appointment, you will receive a copy of your report and access to your scanned images through the online portal.
MRIs do not use ionizing radiation, so they do not pose any radiation risks to the body. However, as they do use magnets to create a strong magnetic field, so objects made of magnetic materials can become projectiles and a hazard to patients and staff.
The machine also creates loud clicking noises that can affect hearing, but this is usually overcome by providing you with ear protection.
Individuals with implanted devices such as cochlear implants, pacemakers, or artificial joints will not be suitable for MRI scans unless they are deemed MR safe.
If you are unsure about the compatibility of your implant with MRI machines, it might be safer to avoid these scans until you can clarify this. Some people might struggle with MRI machines because they lie enclosed during the scan.
A gadolinium-based contrast agent is used for MRI scans with contrast, which might carry some side effects. You might feel slightly nauseous, dizzy, find a rash, or develop a headache. If you have a known allergy to the dye, flag this up and avoid getting a scan with contrast. Note: At Ezra, we do not use contrast dyes, so our MRIs are completely non-invasive and safer than those that do use contrast dyes.
The cost of an MRI brain scan on average ranges from $1,600 to $8.400. At Ezra, we offer a full-body MRI scan that covers up to 13 organs, including the brain.
At Ezra, our full-body flash scan (which includes the head, neck, abdomen, and pelvis) is offered at a $1495 all-inclusive price, including a 45-minute follow up review of your scan findings with a medical practitioner.
After the MRI scan, you will be free to go home and continue with your day without any precautions. If you received a sedative, you will need another person to pick you up. You will also not be able to drive, consume alcohol or operate heavy machinery 24 hours after the sedative.
If you have a scan with us here at Ezra, you will get your report five to seven days after your scan and will have the option to speak with a medical practitioner to go through your report. You can also access your scan images through the online portal.
Can an open MRI be used for a brain scan?
An open MRI is an MRI machine that is open. It is a solution for people who struggle with claustrophobia as closed MRI machines can be uncomfortably small and feel suffocating. For the brain, an open MRI is a viable form of imaging as it has a clear view of the head and can capture an image of the brain.
Can MRI Scans detect brain tumors?
MRI scans are the best form of imaging for brain anatomy and structures, compared to CT scans and X-rays. Medical professionals usually prefer them to help diagnose and detect brain tumors.
Early detection of brain cancer is vital for improving treatment outcomes, as identifying tumors before they progress can lead to better chances of remission. MRI scans, known for their clarity and precision in visualizing soft tissues, are the preferred method for detecting brain tumors compared to CT scans and X-rays. With various MRI techniques available, this non-invasive and radiation-free approach offers a safer and highly effective option for diagnosing brain cancer.
Consider booking an Ezra Full Body MRI Scan, which screens for up to 13 cancers, offering peace of mind through early detection.
