by Karl Loren
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First
Radiology Clinic |
A Brief History of Magnetic Resonance Imaging
| Magnetic
Resonnance Imaging (MRI) is by
far the most important diagnostic imaging discovery in medicine since
the discovery of X-Ray by Roentgen in 1890.
The first clinical use of MRI took place in Nottingham University Hospital in England in 1967. Since then it's importance in radiology continue to grow at a tremendous space and is now established beyond doubt. In the early 1980s, MRI caught the attention of clinicians by its ability to visualize abnormalities in the posterior fossa of the brain and in the upper cervical spine. Computer Tomography by this time had established itself as an important diagnostic tool in the head and body imaging. However demonstrating lesions in the posterior fossa and the spine has always been a problem with CT scan because of the bony structures in these regions. This is because CT scan uses X-Rays unlike MRI which uses magnetism. Over the next few years, MRI became a supplementary modality in diagnostic imaging, complementing CT scan in CNS investigations, but MRI played a small part in the other regions of the body. MRI in those days took as long as two hours in one examination and except for head and the spine which can be fixed and prevented from movement, pictures from the chest and abdomen from MRI were not of diagnostic quality as they were blurred from respiratory and heart motion. These were the problems encounted from the use of low field strength magnets and with the then prevaling technology. With the introduction of high field magnets in the mid 1980s, came faster scan times and better techniques. Soon the superiority of MRI over CT scan was fast realized. In the last three to four years improved computer technology in hardware and software gave MRI the means of obtaining good quality images in other parts of the body. MRI today is considered the imaging modality of choice for most parts of the body, outstripping CT scan in the CNS, especially in the spine, musculoskeletal system, neck and mediastinal structures with diagnostic usefulness in the cardiovascular diseases and abnormalities unchallenged. MRI has great potentials and developmental progress will be exciting over the next few years. Recent progress made in very fast scanning time, down to milliseconds, even allow for MRI fluoroscopy and 3D imaging, and this excites further interest, labeling MRI's potentials limitless. |
| For more information, please email to us at clinic@frc-mri.com |
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