Related Experiment Videos
Gadolinium magnetic resonance imaging dacryocystography
R A Goldberg1, G W Heinz, L Chiu
1Division of Orbital and Ophthalmic Plastic Surgery, Jules Stein Eye Institute, University of California, Los Angeles, School of Medicine.
American Journal of Ophthalmology
|June 15, 1993
Summary
Magnetic resonance dacryocystography using gadolinium contrast effectively images the lacrimal drainage system. This technique provides valuable insights into complex tearing disorders but is not recommended for routine use due to cost.
Area of Science:
- Ophthalmology
- Radiology
- Medical Imaging
Background:
- Tearing disorders often involve the nasolacrimal outflow system.
- Accurate imaging of the lacrimal system is crucial for diagnosing complex obstructions.
Purpose of the Study:
- To evaluate the utility of magnetic resonance dacryocystography (MRDCG) with gadolinium contrast for imaging the lacrimal drainage system.
- To assess the effectiveness of MRDCG in complex tearing disorders.
Main Methods:
- A 1:100 solution of gadopentolate (48% gadolinium) in artificial tears was administered.
- Contrast was given as eyedrops or injected into the canaliculus before MRI scanning.
- A three-inch surface coil was used to enhance soft-tissue detail.
Main Results:
- MRDCG successfully visualized the canaliculi, nasolacrimal sac, and nasolacrimal duct.
- The technique provided useful information in cases of congenital, neoplastic, postsurgical, and posttraumatic nasolacrimal obstruction.
- Gadolinium contrast enhanced the diagnostic value of MRI for the lacrimal outflow system.
Conclusions:
- Gadolinium-enhanced MRDCG is a valuable tool for evaluating complex nasolacrimal obstructions.
- The method offers detailed imaging of the lacrimal outflow tract.
- Due to its expense, MRDCG is not recommended as a routine diagnostic test for tearing disorders.