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MRI (MAGNETIC RESONANCE IMAGING) BRAIN SCAN


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TECHNOLOGY OF MRI


A magnetic resonance imaging (MRI) scan is a common procedure used by hospitals around the world. An MRI Scan utilizes a strong magnetic field and radio waves to create detailed images of the brain. MRI brain scan is a non-invasive and painless procedure. Unlike X-rays and CT scans, MRI brain does not use radiation and hence is a safer procedure.


TYPES OF MRI BRAIN SCANS


1. With or without contrast:

A contrast agent is injected in the body or given orally for MRI Brain with contrast. This generally gives better images than MRI without contrast. However, your doctor will be in a best position to decide which one to go for.


2. Closed vs. open MRI:

Most MRI Brain machines require the patient to lie down and go into a machine. For people who fear closed spaces, this may cause anxiety. The technician can give sedatives in those cases. Another alternative is to opt for an open MRI which is more expensive but will not cause anxiety.


MRI (MAGNETIC RESONANCE IMAGING) BRAIN SCAN
3. 1.5 Tesla vs. 3 Tesla MRI Brain Test:

Tesla is a unit of measurement of magnetic strength. MRI machines can either be 1.5 tesla or 3 tesla. A 3 Tesla MRI Brain Machine can produce better quality images at a faster pace. However, they are more expensive. Additionally, for most of the MRI scans that are done in India, the 1.5 Tesla machines are adequate.


4. Noiseless MRI:

Usually conducting an MRI scan is a noisy affair. However, new MRI machines can help drown the noise. If you want a noiseless experience, please check with your friendly advisor at labsadvisor.com


HOW IS MRI BRAIN TEST PERFORMED


The MRI machine looks like a tube that has both ends open. You lie down on a movable table that slides into the opening of the tube. A technologist monitors you from another room. You can talk with the person by microphone.

Before the exam you will be asked to fill out a screening form asking about anything that might create a health risk or interfere with imaging. Items that may create a health hazard or other problem during an MRI exam include:

  • Cardiac pacemaker or implantable defibrillator
  • Catheter that has metallic components that may pose a risk of a burn injury
  • A ferromagnetic metallic vascular clip placed to prevent bleeding from an intracranial aneurysm
  • An implanted or external medication pump (such as that used to deliver insulin or a pain-relieving drug)
  • A cochlear (inner ear) implant
  • A neurostimulation system
  • A catheter that has metallic components that may pose a risk of a burn injury.

Items that need to be removed by patients and individuals before entering the MR system room include:

  • Purse, wallet, money clip, credit cards, cards with magnetic strips
  • Electronic devices such as beepers or cell phones
  • Hearing aids
  • Metal jewellery, watches
  • Pens, paper clips, keys, coins
  • Hair barrettes, hairpins
  • Any article of clothing that has a metal zipper, buttons, snaps, hooks, underwire, or metallic threads
  • Shoes, belt buckles, safety pins

Objects that may interfere with image quality if close to the area being scanned include:

  • Metallic spinal rod
  • Plates, pins, screws, or metal mesh used to repair a bone or joint
  • Joint replacement or prosthesis
  • Metallic jewellery including those used for body piercing
  • Some tattoos or tattooed eyeliner.
  • Makeup, nail polish or other cosmetic that contains metal
  • Bullet, shrapnel, or other type of metallic fragment
  • Metallic foreign body within or near the eye (such an object generally can be seen on an x-ray; metal workers are most likely to have this problem)
  • Dental fillings (while usually unaffected by the magnetic field, these may distort images of the facial area or brain; the same is true for orthodontic braces and retainers)

During the MRI brain scan, the internal part of the magnet produces repetitive tapping, thumping and other noises. If you are worried about feeling claustrophobic inside the MRI machine, talk to your doctor beforehand. You may receive a sedative before the scan. MRI brain scan can also be done in an open MRI machine which is generally more expensive.

In some cases, a contrast material (MRI brain with contrast), may be injected through an intravenous (IV) line into a vein in your hand or arm. The contrast material enhances the appearance of certain details. The material used for MRIs is less likely to cause an allergic reaction than the material used for CT scans.

An MRI can last up to 45 minutes or more. You must hold very still because movement can blur the resulting images.


WHY IS MRI BRAIN SCAN DONE?


  • stroke
  • infections
  • tumours
  • cysts
  • swelling
  • aneurysms (bulging in the blood vessels of the brain)
  • spinal cord injuries
  • hydrocephalus (a build-up of spinal fluid in the brain cavities)
  • bleeding (haemorrhage)
  • inflammation
  • problems with development or structure


RISKS WITH MRI BRAIN SCAN


MRI does not use ionizing radiation (high-energy radiation that can potentially cause damage to DNA, like the x-rays used CT scans).

There are no known harmful side-effects associated with temporary exposure to the strong magnetic field used by MRI scanners.

For more information on MRI Brain Scan, you may refer to the following sites:



Know Cost of MRI Brain in Different Cities In India


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