In 1970, neurology’s practice improved as soon as medical imaging equipment such as Computerized Tomography or CT scans became more accessible. The head was scanned by sending x-ray streams all the way through it from distinct positions and gathering the x-ray streams that were not absorbed, on the opposite side of the head. The images come into view, in sequence, on an x-ray plate or a computer monitor, resembling with horizontally and in series, arranged slices made from side to side of the head with a cutter.
In 1980, the medical society was amazed by new and better medical imaging equipment called Magnetic Resonance Imaging or MRI scans. The innovation is that MRIs is based on the speed at which hydrogen atoms of molecules of water that rotates inside the brain line up or fall out of organization with a strong magnetic field. Into a computer are introduced various values of magnetization or de-magnetization. The images can be observed on an x-ray type film in hues of gray. This great medical imaging equipment reveals tumors or signs of sclerosis. It does this by identifying different hues of gray and changes in contours and positions.
Getting a scan with Computerized Tomography or Magnetic Resonance Imaging medical imaging equipment, it might seem the same experience for a patient. He is lying on a moving table inside a hole in the scanner in the case of both medical imaging equipments. The hole is narrower in the MRI machine and the claustrophobia suffering patients should inform their doctors about this problem. Also, this MRI machine transmits a strident noise every time the coils of radio frequency are switched off or on. Whether it is a MRI scan or a CT scan, for both medical imaging machines the doctor needs to inject a particular substance into the patient’s vein.
It’s not recommended to apply a MRI scan to a patient who has a heart pacemaker because the medical imaging equipment might disturb the device and stop the heart or to a very ill patient. In this case the patient is allowed to be examined and sustained while getting a Computerized Tomography, but it is dangerous to get a Magnetic Resonance Imaging.