An MRI scanner is a medical imaging device that uses strong magnets and radio waves to create detailed pictures of the inside of the body. Unlike X-rays, it does not use radiation, making it a safer option for examining organs, tissues, and even the brain. Patients lie on a table that slides into a large, tube-shaped machine, which can be a bit noisy but is generally painless. The images produced by an MRI scanner help doctors diagnose various conditions, such as tumors, injuries, or diseases. This technology is essential in modern medicine, allowing for accurate assessments without invasive procedures.