Dacryocystography

Recurrent
epiphora after dacryocystorhinostomy surgery: Structural abnormalities identified with dacryocystography and long term outcomes of revision surgery. Images showing the different abnormalities seen on DCGs following DCR surgery. a right inferior canalicular block, b left common canalicular block, c right complete surgical anastamosis closure with closed sac remnant, d left complete surgical anastamosis closure with flow through the nasolacrimal duct, e right narrow anastomosis with narrow flow-stream into the nasal space, f right narrow and high anastamosis, g right narrow anastamosis with retained dye on erect x-ray, h right narrow anastamosis with dye also passing through the nasolacrimal duct
bmcophthalmol.biomedcentral.com • CC-by-4.0
Recurrent
epiphora after dacryocystorhinostomy surgery: Structural abnormalities identified with dacryocystography and long term outcomes of revision surgery. DCG images showing drainage into the nasal sinuses. a + b left, c right. The left, dye filled an ethmoidal air cell as well as passing though the nasolacrimal duct
bmcophthalmol.biomedcentral.com • CC-by-4.0
Lacrimal
drainage system stenosis associated with Trastuzumab emtansine (Kadcyla®, T-DM1) administration: a case report. Dacryocystographic image of the patient showing multiple focal narrowing of nasolacrimal duct in right eye and diffuse narrowing of nasolacrimal duct in left eye
bmccancer.biomedcentral.com • CC-by-4.0
Radiopaedia • CC-by-nc-sa 3.0 • de

Dacryocystography (DCG) is a fluoroscopic contrast examination of the nasolacrimal apparatus. The nasolacrimal duct is cannulated enabling iodinated contrast to be instilled into the nasolacrimal system.

Indications

The most frequent indication is epiphora: excessive tearing or watering of the eye(s).

Technique

Equipment is similar to that used to perform a sialogram.

One suggested technique:

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

    • CT and MRI dacryocystography have also been described .

    Siehe auch:
    und weiter:
    Assoziationen und Differentialdiagnosen zu Dacryocystographie:
    Saccus
    lacrimalis
    Wikipedia • Public domain
    Ductus
    nasolacrimalis
    Wikipedia • Public domain
    Mukozele des
    Tränensacks
    pediatricimaging.org • CC-by-nc-sa 4.0