Sub Topics: Diagnostic Radiology is a vital field in modern healthcare...
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Interventional Radiology (IR) is a rapidly advancing medical specialty that...
Magnetic Resonance Imaging (MRI) is a non-invasive diagnostic imaging method that uses strong magnetic fields and radiofrequency waves to generate detailed images of internal body structures. Unlike X-rays or CT scans, MRI does not use ionizing radiation, making it a safer option for repeated examinations. It is especially useful for visualizing soft tissues such as the brain, spinal cord, muscles, heart, and abdominal organs.
The basic principle of MRI relies on the alignment of hydrogen protons within the body when placed in a magnetic field. Radiofrequency pulses are applied and then turned off, causing the protons to release energy that is captured and converted into high-resolution images.
Advanced MRI techniques have expanded the diagnostic capabilities of this technology. Functional MRI (fMRI) measures brain activity by detecting blood flow changes. Diffusion-Weighted Imaging (DWI) and Diffusion Tensor Imaging (DTI) assess water movement in tissues, aiding in stroke evaluation and white matter mapping. Magnetic Resonance Spectroscopy (MRS) provides biochemical information about tissues, while Magnetic Resonance Angiography (MRA) visualizes blood vessels without invasive procedures.
Nurses play a vital role in MRI by preparing patients, ensuring safety screening, providing emotional support, and monitoring patients throughout the procedure.