NEURORADIOLOGY: DISCOGRAPHY (Indications (Traumatic annular tears and…
Radiographic investigation of selected intervertebral fibrocartilages (disks)
Normally done in the OT or interventional radiology suite using C-arm.
Determine intranuclear morphology of disk and the presence and direction of annular damage.
Reproduce pain, determine correct disk, and assess its response to anesthetic injection.
Traumatic annular tears and ruptures.
Suspected disc prolapse.
Symptomatic disc degenaration without radicular signs.
Acute traumatic intraosseous disc herniation.
Assessment of discs above or below a mechanically altered segment
Recent lumbar puncture
Previous adverse reaction to intrathecal injection of the same CM.
Any local or distant sepsis will add to the risk of infective discitis
Fluoroscopy unit with spot film facility
Outer needle 21 G, 12.5 cm
Inner needle 26 G, 15.8 cm
Procedure is done under local anesthesia
Valium for anxious patients
procedure and its aim is explained to the patient
Contrast media injected up to 1 ml into disk
Prone or left lateral
Patient asked to describe pain
Nucleus polposus pulmonary embolism