Dacryocystography

Dacryocystography is fluoroscopic contrast examination of the nasolacrimal apparatus. The duct is cannulated enabling contrast to be instilled into the nasolacrimal system.

Indications

The most frequent indication is epiphoria: tearing or watering of the eyes.

Technique

Equipment is similar to that used to perform a sialogram.

One suggested technique:

  1. patient in the supine position
  2. similar projection to an OM view in most cases
  3. acquisition of a preliminary control film to confirm patient positioning and exposure
  4. dilate the punctum to insert the cannula
  5. non-ionic iodinated contrast injection into a cannulated duct, avoiding air bubbles
  6. acquire images, whilst ask the patient to look straight ahead to avoid blinking
  7. a post-removal of cannula erect view may be useful in diagnosing functional blocks

CT dacryocystography has also been described 1.

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Article information

rID: 54829
System: Head & Neck
Section: Radiography
Synonyms or Alternate Spellings:
  • Dacryocystogram
  • Dacryocystograms

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Cases and figures

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    Fig 1: normal dacryocystogram
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