Type:
Educational Exhibit
Keywords:
Not applicable, Trauma, Obstruction / Occlusion, Inflammation, Dacryocystography, Digital radiography, Head and neck, Eyes, Contrast agents, Head and Neck
Authors:
M. Novaes1, M. D. Garboggini2, P. C. S. Leite2, I. B. Maia2, F. D. S. Barros2; 1SALVADOR, Bahia/BR, 2Salvador/BR
DOI:
10.26044/ecr2020/C-04821
Background
Epiphora is the most common clinical complaint leading to investigation of the lacrimal pathways. Tearing can have two main causes: excessive lacrimation (functional cause) or lack of adequate drainage (anatomical cause), the latter being the most common[4].
Ewing performed the first DCG in 1909 using an oily preparation of bismuth to outline a lacrimal sac abcess[3].
DCG is the cheapest and most available method to demonstrate the anatomical structures of the lacrimal pathway elucidating the cause of epiphora. Delivery of ionizing radiation does occur with this technique but, compared to CT Dacryocystography (CTD) and Dacryoscintigraphy (DSG), it emits the lowest dose to the lens (0.04 to 0.2 mSv for DCG; 1.8 to 2.6 for CTD and 1.09 mGy/MBq for DSG)[1].
The aim of this presentation is to present the technique we have been using for 30 years and to make radiologists familiar with the most common aspects of the main pathologies of the lacrimal pathway.