Magnetresonantsskoopia

Magnetresonantsskoopia, often referred to as MRI, is a non-invasive medical imaging technique used to visualize internal structures of the body. It utilizes a strong magnetic field and radio waves to create detailed cross-sectional images. Unlike X-rays or CT scans, MRI does not use ionizing radiation, making it a safer option for repeated imaging or for sensitive patient populations. The process involves placing the patient within a powerful magnetic field, which causes the protons within the body's water molecules to align. Brief radiofrequency pulses are then applied, which temporarily knock these protons out of alignment. As the protons realign with the magnetic field, they emit radio signals that are detected by the MRI scanner. These signals are then processed by a computer to generate detailed images. Different tissues have varying water content and molecular compositions, which affect how their protons respond to the magnetic field and radio waves. This variation allows MRI to differentiate between different types of tissues, such as fat, muscle, bone, and fluid, as well as identify abnormalities like tumors or inflammation. Contrast agents can sometimes be injected to further enhance the visibility of certain structures or pathologies. MRI is commonly used to examine the brain, spinal cord, joints, muscles, and internal organs.