MRtomografie

MRtomografie, also known as Magnetic Resonance Imaging (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 of organs, soft tissues, bone, and virtually all other internal body structures. Unlike X-rays or CT scans, MRI does not use ionizing radiation, making it a preferred choice for certain diagnostic procedures, particularly in pediatrics and for imaging pregnant women.

The process involves placing the patient inside a powerful magnetic field, which aligns the protons within the body's water molecules. Radiofrequency pulses are then applied, which briefly knock these protons out of alignment. As the protons return to their aligned state, they emit radio signals that are detected by the MRI scanner. Different tissues emit signals of varying strengths and durations, allowing the computer to construct detailed images. Contrast agents, such as gadolinium-based compounds, can be injected intravenously to enhance the visibility of specific tissues or abnormalities.

MRI is widely used to diagnose a broad range of conditions, including tumors, neurological disorders like multiple sclerosis and stroke, musculoskeletal injuries, and cardiovascular diseases. It offers excellent contrast resolution between different soft tissues, making it invaluable for examining the brain, spinal cord, muscles, and ligaments. The ability to obtain images in multiple planes without repositioning the patient further adds to its diagnostic utility. While generally safe, MRI is contraindicated in individuals with certain metallic implants, such as pacemakers or cochlear implants, due to the strong magnetic field.