Needle placement of myelography

Area of Science:

• Neurosurgery
• Radiology
• Anesthesiology

Background:

• Myelography requires precise contrast medium delivery into the subarachnoid space.
• Incorrect needle placement can lead to partial extra-arachnoid contrast deposition, compromising imaging quality and diagnostic accuracy.

Purpose of the Study:

• To highlight the importance of proper spinal needle bevel placement within the subarachnoid space during myelography.
• To introduce the Cuatico aspiration cannula as a tool to verify needle tip depth in the subarachnoid space.

Main Methods:

• Utilizing a Cuatico aspiration cannula passed through the spinal needle during the lumbar puncture procedure.
• Observing the cannula's function in indicating the needle tip's depth relative to the subarachnoid space.

Main Results:

• The Cuatico aspiration cannula effectively indicates when the spinal needle's bevel is fully within the subarachnoid space.
• This method aids in preventing the deposition of contrast medium outside the target subarachnoid space.

Conclusions:

• Proper placement of the spinal needle bevel is essential for successful and accurate myelography.
• The Cuatico aspiration cannula is a valuable adjunct for confirming subarachnoid needle placement, improving procedural safety and efficacy.