+Scan+Tips+-+How+Does+an+MRI+Scan+Tool.jpg "MRI (Magnetic Resonance Imaging) Scan Tips: How Does an MRI Scan Tool ?")
Scanning (scan) or magnetic resonance imaging MRI is one of the most common scanning to scan injuries and serious medical conditions.
MRI done to check for a variety of health conditions including muscle problems / bones, head injuries, and cancer.
MRI has been used since the 1980s, but many patients do not know what happens when they are sent to the MRI tube.
MRI is a very powerful giant magnet that uses magnetic fields and radio waves to produce images of the body.
Magnetic strength is measured in units known as gauss. For comparison, the Earth has a 0.5-gauss magnetic field.
Large magnetic field is measured in units called tesla comparable to 10,000 gauss.
MRI produces a magnetic field with a strength of 0.5-2.0 tesla. When a patient receives an MRI, he was actually sent to the tube magnetic field.
Body area to be scanned is placed at the center of the magnetic field MRI machines.
Science Behind MRI
MRI scans use of the fact that the body contains a lot of water. Water molecules containing oxygen and hydrogen.
Because the hydrogen molecule has a natural magnetic spin, change the configuration of the nuclei MRI uses magnetic fields and radio waves it emits a blast.
Hydrogen molecules then emit radio waves also recorded and mapped by the scanner.
The time required for hydrogen molecules back into alignment naturally vary depending on the type of tissue being scanned.
The computer will record the time it takes the molecules to return to the normal state that allows it to detect various types of normal and abnormal tissues in the body part being scanned.
What are imaged MRI scan?
MRI can scan almost all body tissues.
Tissue such as bone that does not have much water in it, and because it does not have a lot of hydrogen, will appear dark on the scan results.
Other networks will appear brighter. Scanning will provide two-dimensional images of the body, allowing doctors to see the layers upon layers of the tissue being scanned.
This two-dimensional model can be converted into a three-dimensional model of the computer, allowing doctors to analyze in more detail the body tissue before treatment or action plan.
Blood flow can also be measured using MRI without the need to inject a tracer fluid as other imaging techniques.