Myelography Flashcards
What is demonstrated in a myelogram?
CNS structures within vertebral canal
What types of myelograms are performed?
Cervical, thoracic, lumbar
What type of contrast media is used for a myelogram (be specific)? Why?
Non ionic water soluble, body reabsorbs contrast
What is the atomic number for iodine?
53
At what level is the needle inserted?
L2-L3 or L3-L4
What type of injection is performed?
Intrathecal
What documentation must be performed for this contrast?
type, lot#, exp. date
How many times should the contrast bottle be checked prior to injection?
3 times
What pathology may be demonstrated?
hydrocephalis
What is the role of the radiographer?
Set up
What preliminary images should be taken?
x-table lateral, PA
What post-fluoro images will be taken?
PA ,lateral, obliques
How much contrast is injected?
9-12mm
Why must the chin be elevated?
Dont want the contrast to go into brain
What is the name of the tapered terminal end of the spinal cord?
Conus medularis
The above is at what level?
L1-L2
What is the cauda equina?
Bundle of nerves
What other modality may be performed after x-ray?
CT
What image may be performed to demonstrate this area? What is the CR location?
Conus projection
CR: PA, mps level of T12-L1
How long will the patient be kept in recovery after the exam? Why?
4-8 hours
According to the textbook/lecture, who should the patient be positioned on the cart after the exam?
30-45 degrees
