dacryocystogram

dac·ry·o·cys·to·gram

(dak'rē-ō-sis'tō-gram),
A radiograph of the lacrimal apparatus obtained after injection of contrast material for the purpose of determining the presence of and localizing a site of obstruction; this procedure has been largely replaced by the CT and MRI.
[dacryocyst + G. gramma, a writing]