Magnetic Resonance Imaging (MRI) Scanner

The Magnetic Resonance Imaging (MRI) Scanner, developed in the 1970s by Raymond Damadian, Paul Lauterbur, and Peter Mansfield, revolutionized medical diagnostics by producing detailed soft-tissue images without using ionizing radiation. A typical clinical MRI scanner uses a powerful 1.5- to 3-tesla magnetic field and radio waves to generate images, allowing it to resolve structures as small as 1 millimeter. A standard brain scan can be completed in approximately 20 minutes, offering superior visualization of the brain and spinal cord compared to X-ray CT scans. The primary trade-off is the significant cost of MRI machines and the time it takes to complete a scan, which can be challenging for claustrophobic patients or those unable to remain still for extended periods.