We all know about how digital and quantum physics has opened up the gates to modern technology. From space expeditions to archaeological discoveries, anything is possible.
The medical and healthcare industry is not an exception.
One of the most remarkable inventions of all time is Magnetic Resonance Imagery. Or as it is more commonly known as- MRI.
In this article, we will take up a deeper account of how this remarkable technology works.
It all starts with the Magnets…
As the name suggests, the technology uses a magnetic field to create the image of the anatomy of an organism.
With the help of powerful magnets and electronic sensors, any changes in the magnetic field are recorded. It is then processed with the help of a computer program and transformed into an image.
The permanent magnets help create a constant magnetic field. When there is no object within the field, there is no image. As soon as an object is placed within the field, distortions in the magnetic field are recorded.
It is noteworthy that the clarity of the image depends on the strength of the magnetic field. A strong permanent magnet design like this can help create a stronger magnetic field. And therefore a more detailed image of the objects.
A measure of Hydrogen Nuclei Density
Another important principle that is responsible for the image formation is the magnetic polarity of hydrogen nuclei.
It is noteworthy that the hydrogen nucleus has only one proton and therefore a singular polarity. And it has been experimentally established that organic matter has a high content of these protons.
To understand how the depths and troughs of the image are created, it is necessary to understand how these protons react with an external magnetic field. We will come to it in the next section.
For now, it is satisfactory to say that the number of these protons in a region controls the variation in the magnetic field. Measuring the density of hydrogen nuclei in a region gives the measurement of organic mass.
The interaction between Poles
Electrons and protons are present within every atom. It means, there is a polarity to every material, be it metallic or not.
This simple fact can create a lot of disturbance in the magnetic field and therefore lead to wrong imagery.
To overcome this principle, a beam of hydrogen nuclei is also ejected from another pole within the MRI machine. This beam, containing only the hydrogen nuclei, can pass through the organic matter at a specific density.
Now, the density that is received by the magnetic field sensors is mostly a singular proton beam. This interaction between the hydrogen nuclei and the magnetic field is what eventually creates the troughs and peaks in an MRI scan.
MRI scans have helped revolutionalize modern medicine and find cures to problems that were once invisible to the naked eye. Cancers, ulcers, brain injuries, and several other internal ailments can now be easily treated with the help of this technology.
For more information on the construction and applications of this technology, it is best to get in touch with other experts.