Understanding MRI lingo
Link to article at nih.gov Quote: T1 weighted images were used to observe changes of spinal cord signals. In 7 cases with cavity formation in the central part of the injured spinal cord was found histologically, there was small cavity in the spinal cord signal on MRI. In 12 cases with necrosis and softening in central area of the spinal cord, the T1 weighted image showed hypointensity in central part of spinal cord signal, and in 3 cases with necrosis, degeneration and glial replacement histologically, the MR image showed unhomogeneous and slight hyointensity signal. Link to article at nih.gov Quote: The use of evoked potentials for clinical correlation and surgical outcome in cervical spondylotic myelopathy with intramedullary high signal intensity on MRI. [...] OBJECTIVE: To investigate the use of motor evoked potentials (MEPs) and somatosensory evoked potentials (SEPs) for clinical significance and surgical outcome in patients with cervical spondylotic myelopathy (CSM) with intramedullary high signal intensity on T2 weighted MRI. METHODS: Forty nine patients were scored according to the modified Japanese Orthopaedic Association (JOA) score for cervical myelopathy. MEP and SEP studies were performed and the results were categorised as normal or abnormal. Thirty nine patients who had received surgical decompression were re-evaluated after 6 months. Surgical outcome was represented by the recovery ratio of the JOA score. Quote: MRI performed 120 min after his fall showed spinal canal stenosis due to disk protrusion at the C3/4 level without spinal cord signal changes on T1...
OK, any MRI Radiologists out there to explain this to me? Thanks? |
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| This is what was explained to me years ago.
MRIs use three (I think)different magnets to form the images. If you've ever have an MRI, you can hear (or feel - ouch) the difference in the cycles. Kind of like they run magnet A over the area to be checked, followed by magnet B and finally magnet C. The MRI magnets cause the body cells to spin, with differences in the way they spin (direction, speed) indicating different types of cells. The information is processed and films produced based on the results. First quote: focusing on one the images, in 7 cases with a hole forming in the center of the injured spinal cord that was found on lab slides and it was shown on the MRI. In 12 cases with dead tissue and goo in the central area of the spinal cord, the MRI showed a weaker signal in the same area. In 3 cases with dead tissue, breakdown of cells and some replacement of cells shown by lab slide, the MRI showed an uneven and slighty weaker signal. Second quote: out of my area, sorry. |
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