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Cytopathology
Ultrasound-Guided Fine-Needle Aspiration (USFNA)
Technique of Ultrasound-Guided Needle Placement

Authors: Joe D. Jakowski M.D., Susan Meanor R.D.M.S., R.T. (see Reviewers page)
Revised: 23 March 2013, last major update March 2013
Copyright: (c) 2003-2013, PathologyOutlines.com, Inc.

General
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Key steps to performing an USFNA
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  1. Obtain proper patient and US machine positioning, adequate room lighting, and all necessary equipment
  2. "Find" and confirm target of interest for FNA using the US transducer (can use a surgical ink pen to make marks on skin if needed)
  3. Plan the best needle approach to the target using information from the US images (e.g. depth and relation to surroundings structures such as bones or large vessels)
  4. Cleanse the skin with antiseptic (70% isopropyl alcohol wipes, providone iodine, chlorhexidine) at site of needle entry
  5. Recheck for proper orientation of US transducer with respect to US display screen and patient
  6. Place needle under ultrasound guidance using one of two approaches defined by orientation of needle with respect to transducer US beam: parallel technique or perpendicular technique
Parallel technique
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Perpendicular technique
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Clinical images
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Perpendicular technique
Parallel technique
End of Cytopathology > Ultrasound-Guided Fine-Needle Aspiration (USFNA) > Technique of Ultrasound-Guided Needle Placement


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