First MRI Scan of a Human
Researchers produced the first MRI image of a live human body
July 03, 1977
Seeing Inside the Body Without Surgery
On July 3, 1977, physician Raymond Damadian and his colleagues Lawrence Minkoff and Michael Goldsmith completed the first magnetic resonance imaging scan of a living human being. The patient was Minkoff himself. The process took nearly five hours to produce a single image, but it was a breakthrough that would transform medicine. Damadian had been working on the concept since the early 1970s, when he discovered that cancerous tissue and normal tissue responded differently to magnetic resonance signals. He believed this difference could be used to detect tumors without exposing patients to radiation.
How MRI Technology Works
MRI uses powerful magnetic fields and radio waves to create detailed images of the body's interior. The magnetic field causes hydrogen atoms in the body's water molecules to align. When radio waves are directed at these atoms, they emit signals that a computer translates into detailed images. Unlike X-rays or CT scans, MRI does not use ionizing radiation, making it safer for repeated use. It is particularly effective at imaging soft tissues, including the brain, spinal cord, muscles, and joints. The level of detail MRI provides allows doctors to detect tumors, torn ligaments, brain abnormalities, and many other conditions that older imaging methods could not show clearly.
A Tool That Reshaped Diagnosis
Paul Lauterbur and Peter Mansfield were awarded the Nobel Prize in Physiology or Medicine in 2003 for their contributions to developing MRI. Damadian's exclusion from the prize was deeply controversial. Commercial MRI machines became available in the early 1980s, and the technology has improved steadily ever since. Today, MRI scanners are found in hospitals worldwide and perform millions of scans every year. Newer machines produce higher-resolution images in a fraction of the time it took during those early experiments in 1977. Functional MRI, or fMRI, can even show which parts of the brain are active during different tasks, opening new doors in neuroscience research.