Discograms are usually performed by a diagnostic radiologist. Tell the Physician if . . . The discogram is performed by placing a needle through the skin along the center of the back into the center of the disc space. A special dye is injected into the disc that will enable the physician to view the disc in detail. Regular X-rays of the spine only give a clear picture of bones, such as the vertebrae.
Myelograms only give a clear picture of the spinal canal.
Discograms, however, enable the physician to view the disc itself. The special dye used in the procedure shows up white on X-rays which in turn helps the physician in an accurate diagnosis. The results of a discogram may confirm the necessity for surgery, as well as determine the exact cause of a person's back pain, which will increase the likelihood of a positive outcome from surgery. Medication may make you drowsy and relaxed. You will lie on your abdomen and side during the procedure.