A Dacryocystogram is a fluoroscopy test of the tear ducts. It shows blocked tear ducts. Typical effective dose 0.1 to 0.5 mSv, similar to about 2 weeks to 2 months of natural background radiation (about 3 mSv a year).
General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.
Blocked tear ducts.
Watery eye.
Preparation depends on the study (fasting or bowel preparation). Tell staff if pregnant.
Typical effective dose 0.1 to 0.5 mSv, similar to about 2 weeks to 2 months of natural background radiation (about 3 mSv a year). Tell staff if you are or might be pregnant; the benefit usually outweighs the small risk, and shielding or alternatives can be considered.
30 minutes. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
Fluoroscopy
Consult a doctor to interpret results — a single test does not make a diagnosis.
Uses your location once to list the nearest facilities. Nothing is stored.
What does a dcg show?
Blocked tear ducts.
Why is a dcg done?
Watery eye.
How do I prepare for a dcg?
Preparation depends on the study (fasting or bowel preparation). Tell staff if pregnant.
Does a dcg use radiation?
Typical effective dose 0.1 to 0.5 mSv, similar to about 2 weeks to 2 months of natural background radiation (about 3 mSv a year). Tell staff if you are or might be pregnant; the benefit usually outweighs the small risk, and shielding or alternatives can be considered.
How long does a dcg take?
30 minutes
Why is Dacryocystogram done?
Watery eye.
How do I prepare for Dacryocystogram?
Preparation depends on the study (fasting or bowel preparation). Tell staff if pregnant.
Is Dacryocystogram safe in pregnancy?
Typical effective dose 0.1 to 0.5 mSv, similar to about 2 weeks to 2 months of natural background radiation (about 3 mSv a year). Tell staff if you are or might be pregnant; the benefit usually outweighs the small risk, and shielding or alternatives can be considered.
SI text CC BY 4.0; RadiologyInfo.org (ACR/RSNA) and MedlinePlus linked as references only, no text copied.