What Is a Lumbar Discogram?

Spinal angiography is a method that uses water-soluble iodine and other contrast agents to inject into the subarachnoid space, and then performs X-rays or CT in time to show the lesions. Needles are usually inserted in the lumbar 3-4 or lumbar 4-5 space, and the contrast medium is slowly and continuously injected after the cerebrospinal fluid flows out. Applicable to lumbar spinal canal lesions, disc herniation, spinal canal stenosis, spinal canal deformity, spinal degenerative lesions, etc. Special attention should be paid to those who are allergic to iodine, infection at the puncture site, and acute bleeding in the spinal canal.

Spinal angiography

Spinal angiography is a method that uses water-soluble iodine and other contrast agents to inject into the subarachnoid space, and then performs X-rays or CT in time to show the lesions. Needles are usually inserted in the lumbar 3-4 or lumbar 4-5 space, and the contrast medium is slowly and continuously injected after the cerebrospinal fluid flows out. Applicable to lumbar spinal canal lesions, disc herniation, spinal canal stenosis, spinal canal deformity, spinal degenerative lesions, etc. Special attention is

Spinal angiography, also called MyelograPhy, is used as a diagnostic report of space-occupying lesions and morphological changes of the cervical spinal canal caused by trauma, and their correlation with the spinal cord. Spinal angiography is a commonly used and effective examination method. Currently, Omnipaque iodine contrast agent is mostly used. The significance of myelography is:

(l) Identification of spinal canal lesions: for example

CT diagnosis of cervical spinal canal stenosis, yellow ligament hypertrophy: no measurement report of normal yellow ligament has been reported. According to our observation, the normal thickness of yellow ligament is generally less than 4 mmo. CT manifestations of cervical disc herniation:

Spinal angiography principle diagram (5 photos)

(1) The shadow of soft tissue protruding into the spinal canal is mostly disc-shaped or massive, with the same density as the intervertebral disc, and sometimes uneven disc ossification or calcification is visible in the protruding disc.

(2) The dural sac, spinal cord and nerve root sheath sleeves are deformed and displaced under pressure. The dural sac can be deformed in a flat, triangular, spindle or irregular shape, and severely deformed in a crescent shape.

CT scan (CTM) after myelography can better show the spinal cord, subarachnoid space and nerve root sheath sleeve than CT plain scan, and distinguish the intervertebral discs involving the spinal canal and the yellow ligament. CT plain scan has been able to solve most of the diagnosis of spinal stenosis, and because CTM examination is time-consuming, expensive, and neurotoxic effects of contrast agents, CTM is generally not needed. CTDR diagnosis is only considered when CT plain scan cannot resolve the diagnosis. .