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Myelography:Myelography is an imaging examination that involves the introduction of a spinal needle into the spinal canal and the injection of contrast material into the space around the spinal cord (the subarachnoid space). An x-ray (radiograph) is a noninvasive medical test that helps physicians diagnose and treat medical conditions. Imaging with x-rays involves exposing a part of the body to a small dose of ionizing radiation to produce pictures of the inside of the body. X-rays are the oldest and most frequently used form of medical imaging. When the contrast material is injected into the subarachnoid space, the radiologist is able to view and evaluate the status of the spinal cord, nerve roots and the membranes which surround and cover the spinal cord and nerve roots (the meninges). Myelography provides a very detailed picture (myelogram) of the spinal cord and spinal column. In most cases, the myelogram is followed by a computed tomography (CT) scan to better define the anatomy and any abnormalities.
Spinal fluid analysis:
Cerebrospinal fluid (CSF) analysis is a set of laboratory tests that examine a sample of the fluid surrounding the brain and spinal cord. This fluid is an ultrafiltrate of plasma. The procedure is done while the patient is under a general anesthetic. CSF is withdrawn from the subarachnoid space through a needle by a procedure called a spinal tap. CSF analysis includes tests in clinical chemistry, hematology, immunology, and microbiology. |