Resonanssikuvista

Resonanssikuvista, commonly known as magnetic resonance imaging (MRI), is a medical imaging technique used to visualize internal structures of the body. It utilizes a strong magnetic field and radio waves to generate detailed images of organs, soft tissues, bone, and virtually all other internal body structures. Unlike X-rays, MRI does not use ionizing radiation, making it a safer option for certain patient groups, such as pregnant women and children, although precautions are still necessary.

The process of creating a resonant image involves placing the patient inside a large, powerful magnet. This magnetic field aligns the protons within the body's water molecules. Radiofrequency pulses are then emitted, which briefly knock these aligned protons out of equilibrium. When the radiofrequency pulse is turned off, the protons realign with the magnetic field, releasing energy that is detected by the MRI scanner. Different tissues have varying water content and molecular environments, which causes them to release energy at different rates. These differences are detected and processed by a computer to create cross-sectional images, or slices, of the body. The resulting images can be viewed in multiple planes, providing a comprehensive view of the anatomy. MRI is widely used for diagnosing a variety of conditions, including tumors, neurological disorders, musculoskeletal injuries, and cardiovascular diseases. Its ability to distinguish between different types of soft tissues is particularly valuable in medical diagnosis.