Intervertebral Disc
Medical Imaging of the disc and spine
Another new MRI technique, magnetic resonance spectroscopy (MRS), can be used to evaluate the concentration and relationship of chemicals within tissues. For example, lactic acid and other chemicals can be measured in the spinal cord or the intervertebral disc without using an invasive method. It can be performed without placing the patient at risk. Magnetic resonance imaging can be performed after the injection of intravenous contrast medium to help assess the dynamics of the intervertebral disc. Measuring the rate at which the injected contrast moves into the disc provides a measure of glycosaminoglycans, which is an important chemical building block of a discs structure.
Neurography is a high resolution MR technique which can be used to evaluate functional changes in spinal nerve roots adjacent to disc abnormalities.
Dynamic CT or MR imaging of the spine can be used to assess the motions of the spine and it segments. These techniques are used to evaluate the stability of the intervertebral disc and the spine.
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