CSF

• what is cisternography?

  Imaging technique used to diagnose CSF (cerebrospinal fluid) rhinorrhea or CSF otorrhea (CSF leaks)
• what Rf is used in cisternography?

  111In-DTPA (indium); dose = 37-74 MBq
• how is the Rf administered in cisternography?

  intrathecally by lumbar injection to the spinal channel
• when should images be takes in cisternography for sequence scintigraphy?

  at 3, 6, 12, 24, 48 hours
• what does a positive finding in cisternography show?

  obstructive hydrocephalus => radioactivity remaining in the chambers
• indications for cisternography?

  liquorrhea