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Technical report: digital subtraction dacryocystography.

S J King¹, S F Haigh

¹Department of Diagnostic Radiology, King's College Hospital, London.

Clinical Radiology

|November 1, 1990

Summary

Digital subtraction dacryocystography (DSDCG) effectively diagnoses obstructive epiphora. This quick, simple imaging technique provides clear images with potentially reduced radiation exposure, making it suitable for general radiology departments.

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Area of Science:

Ophthalmology
Radiology
Medical Imaging

Background:

Obstructive epiphora, or excessive tearing, affects many patients.
Traditional dacryocystography can be time-consuming and complex.

Purpose of the Study:

To evaluate the efficacy and practicality of digital subtraction dacryocystography (DSDCG) for diagnosing obstructive epiphora.
To assess image quality, patient acceptance, and radiation dose with DSDCG.

Main Methods:

Investigated 21 patients with obstructive epiphora using DSDCG.
Assessed image clarity, ease of technique acquisition, and radiation dose implications.

Main Results:

DSDCG is a quick, simple procedure with good patient acceptance.

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Diagnostic images of the proximal lacrimal apparatus were obtained on a single projection.

Radiation dose to the orbit appeared reduced without lead eye shields.

The technique was easily learned by junior radiologists and yielded reliable obstruction demonstrations.

Conclusions:

DSDCG is a reliable and accurate method for diagnosing lacrimal duct obstructions.
Digital techniques in dacryocystography are recommended when equipment is available for improved diagnostics.