The contrast agent used in a discogram test is injected into the inner core of the disc, called the nucleus pulposus. During the test, the needle is advanced from the back and inserted into the nucleus pulposus using the double-needle technique.
The contrast agent used in a discogram test is injected into the inner core of the disc, called the nucleus pulposus. During the test, the needle is advanced from the back and inserted into the nucleus pulposus using the double-needle technique.