MAGNETIC RESONANCE IMAGE Meaning and
Definition
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A magnetic resonance image (MRI) is a detailed image produced by a medical imaging technique called magnetic resonance imaging. It is a non-invasive diagnostic tool that provides cross-sectional images of the body's internal structures. This technique uses powerful magnets and radio waves to generate signals from the body's tissues, which are then converted into highly detailed and three-dimensional images.
MRI works by aligning the hydrogen atoms in the body with a magnetic field and then perturbing them with radio waves. As the hydrogen atoms realign themselves, they emit characteristic signals that can be detected by the MRI machine. These signals are processed by a computer to create images that show the inner workings of the body, including organs, blood vessels, bones, and soft tissues.
The resulting magnetic resonance image is characterized by its high resolution and excellent soft tissue contrast, making it ideal for detecting and diagnosing a wide range of medical conditions. Unlike other imaging techniques such as X-rays or computed tomography, MRI does not use ionizing radiation, making it safer for patients.
Magnetic resonance imaging has revolutionized medical diagnosis by providing physicians with detailed and accurate information about the body's structures and functions. It plays a crucial role in diagnosing and monitoring various medical conditions, such as brain tumors, spinal cord injuries, joint disorders, and cardiovascular diseases. MRI scans are also used to guide surgeons during minimally invasive procedures and monitor response to treatment.
