What is a MRI scan?

Posted By: admin | Posted on: 15 March, 2017 12:40 pm

What is a MRI scan machine
MRI Scan Machine

(Image Credits: shutterstock.com)

 

What is a MRI scan?

What is a MRI scan is clearly define in the article below. Magnetic resonance imaging (MRI) uses a large magnet and radio waves to look at organs and structures inside the body. MRI is an advance technology that shows internal organs, blood vessels, muscles, joints, tumours, areas of infection, and more – with unexcell clarity without exposure to radiation. The MRI machine creates a magnetic field, sends radio waves through your body, and then measures the response with a computer.

 

Why an MRI scan?

MRI can provide very early detection of many conditions, so treatment can be more effective, accurate and rapid. The excellent quality of MRI images can also provide the best possible information if surgery is require. If there is an abnormality, MRI can show exactly where it is, its size and what tissues are involve.

When is MRI study use?

MRI can be used in the diagnosis of tumour and other conditions
MRI of The Brain With Brain Tumour

(Image Credits: shutterstock.com)

 

MRI’s are very useful for examining the brain and spinal cord and to diagnose a variety of conditions from torn ligaments to tumours. The pictures are much more detail and therefore are of higher diagnostic quality.

  • An MRI of the brain can be done to look for the changes associate with bleeding or when the brain has been starve of oxygen after a stroke.
  • MRI can be use to investigate a traumatic brain injury, and also help diagnose developmental abnormalities.
  • MRI can be use to characterize tumours -benign or malignant abnormal growths and check their progress if they have change in size and whether there has been spread to nearby tissues.
  • Congenital cardiovascular conditions can more accurately be assess with MRI.
  • Within the heart, an MRI scan can give very detailed imaging of the thickness and size of the chamber walls. Damage occurring to the heart tissue after a heart attack or in association with disease of the valve can also be assess.
  • Large blood vessels within the surrounding tissue can also be examined with MRI to check for the buildup of plaques.
  • MRI is very effective at giving clear images of the individual tissues like muscle, bone and ligaments in joint problems.

Is there any radiation in MRI?

MRI uses no radiation. The basic components of MRI are a strong magnetic field and a brief pulse of a radio frequency. There is no known side effects of MRI. Since there is a strong magnetic field however, people with certain devices such as pacemakers, defibrillators, aneurysm clips and certain cochlear implants must NOT enter the MRI room.

MRI contrast is a special medication that is use to improve visualization of certain diseases. If necessary, it is administered through a small IV catheter, which is place in a vein in your arm prior to the procedure. The contrast provides important details about the blood vessels and organs inside the body.

How is an MRI different from a CT?

The results are more clear in MRI than on CT
CT Scan Of Brain

(Image Credits: shutterstock.com)

MRI does not use x-ray radiation. Instead, MRI creates high-quality images through the combination of a strong magnetic field and radio waves. An MRI is prefer over a CT scan for imaging structures such as joints, brain and spinal cord, where clearer and more anatomically detail images are require. The difference between normal and abnormal tissue is often clearer on the MRI scan than on the CT scan. It is also possible to differentiate cystic lesions from malignant tumours, to identify areas of infection and inflammation and for assessment of joint tendon tears.

Why are my previous x-rays, CT and MRI scans need?

They can provide useful additional information for the Radiologist for comparison purposes when they are interpreting your MRI scan. That can help in better diagnosis and treatment plan.

Can metal be worn during the scan?

Since there is an exposure to a powerful magnetic field during MRI scan, it is important not to wear jewellery or any other metal objects.

An MRI scan is not suitable for the patient if they have electrical appliances, such an ear implant, pace maker or have any metal in their body such as surgical clips. But orthopedic metal ware, such as artificial hips, plates or bone screws are not a problem.

What should you convey prior to MRI scan to the doctor?

  • If you are pregnant
  • Medical his