Simultaneous Dacryocystography and Dacryoscintigraphy Using SPECT/CT in the Diagnosis of Nasolacrimal Duct Obstruction

Abstract

Epiphora, an abnormal overflow of tears, is commonly caused by tear drainage system anomalies including nasolacrimal duct obstruction. To assess morphologic abnormalities, dacryocystography by CT is used when CT contrast material is syringed into the lacrimal drainage system. To evaluate the function of the system, dacryoscintigraphy is the most readily available noninvasive method. In the case presented, a 43-year-old man was referred to our clinic with an 8 months' history of indefinite left side epiphora. After performing dacryoscintigraphy, we acquired SPECT/CT images during dacryocystography by CT to establish the surgical indication.

Dacroscintigraphy by pediatric dropper technique: A user-friendly instillation procedure of radiotracer

“…[ 5 ] Micropipette was used for instillation of 5 MBq of 99m TcO4 pertechnetate into the lacrimal lake of both eyes simultaneously. [ 2 ] Rózycki et al . describe a study of 200 patients in which one drop of sterile 99m TcO4 pertechnetate, in dose 3.7–7.4 MBq (100–200 uCi) was instilled by dropping in the conjunctival sac, and distribution of this drug was visible on the monitor.…”

“…Dacroscintigraphy is a noninvasive method to diagnose the functional nasolacrimal duct obstruction. [ 2 3 ]…”

Treatment choice in dacryostenosis based on single-photon emission computed tomography and X-ray computed tomography findings

“…В 2012 г. было опубликовано наблюдение A. Kemeny-Beke и соавт. [10] об 60 cases of those who improved (92.3%) and 3 cases of those who relapsed (13.6%). Conclusion.…”

Dacryoscintigraphy: A pictorial essay

“…Of the few nuclear medicine departments that perform the procedure, there are differences in the protocol followed, the use of collimators, and the use of radiopharmaceuticals. The indications for the procedure are evaluation of epiphora,[ 1 ] detection of subclinical lacrimal duct obstruction, appropriate patient selection for surgery,[ 2 ] and evaluating the success of dacryocystorhinostomy. [ 2 ] It is contraindicated in acute infective and allergic conditions of the eye.…”