Neuroimaging

Technology has advanced to such an advanced level that a non-invasive view of our body from the inside is not a problem. Structural techniques of zero-imaging allow you to see exactly the center of command of our body, or the brain.

The three-dimensional image is created by placing together a large number of brain sections. Let’s develop a computer tomograph (CAT). It is a device that everyone should associate to a lesser or greater extent, but how it works is another matter. Computed tomography is based on the fact that X-rays are absorbed to various degrees by tissues. The beam X repeatedly penetrates through the tissue and each time it does it from a different angle, in this way the image is created. An important element of this method is the computer program algorithm, which calculates the radiological density of each point on the brain’s cross-section. The CT scanner can be used to isolate tissues in which differences in X-ray absorption are greater than 1%.

If 1% difference is not convincing, even more accurate results can be obtained by magnetic resonance imaging (MRI). The method is effective due to the high water content in the human body. Water molecules are made up of oxygen and hydrogen atoms that have an electric charge. After placing the subject in a very strong magnetic field (1.5-7 Tesla), and then sending in it the direction of radio waves that interact with the hydrogen nuclei, they magnetize, i.e. set themselves along the field lines. This can be compared to threading scattered beads (protons) on a straight and tight wire (magnetic field lines). Thanks to this, we obtain a setting in one specific direction. When the radio wave ceases to be sent, all protons return to their place, but they are already magnetized and become a source of radio signal. The intensity depends on the tissue. The medical image is created by a computer analysis of this signal.

The above mentioned devices have different variants of neuroimaging using the radioactive substance or recommended exercises during the examination. The methods used are useful in research in the field of psychology. They allow to confront hypotheses not only on the basis of an interview with a patient or a self-report method, but also through insight into the structure and operation of the brain. However, these techniques do not give a ready analysis of the level of brain activity. For this you need data from research and the enormity of complicated calculations.

The effectiveness of psychotherapy has its empirical confirmation in neuroscience, but we will have to wait a bit longer for accuracy. Technology, although it constantly goes ahead, is still not enough clinical trials to be able to draw unambiguous conclusions. However, with the current technological dynamics, in the near future, neuroimaging should give even more favorable conclusions.