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Most imaging techniques used for the evaluation of obstructive epiphora, such as DS DCG, rely on undesired ionizing radiation. We evaluated the efficacy of topical contrast-enhanced MR DCG in comparison with DS DCG in patients with obstructive epiphora who underwent balloon DCG or stent placement.

Thirty-six LDSs of 21 patients treated with balloon DCG (n = 11) or stent placement (n = 11) were examined with MR DCG and DS DCG. Contralateral LDSs (n = 14) were also evaluated in patients with unilateral disease. A sterile 0.9% NaCl solution containing 1:100 diluted gadolinium chelate was instilled into conjunctival sacs. The 3D FSPGR sequence was used with a 1.5T scanner. MR and DS DCG findings were scored and compared according to morphology of the lacrimal sac, junction, and NLD and the presence of contrast media in the …