Related Experiment Videos
High-resolution conjunctival contrast-enhanced MRI dacryocystography
K T Hoffmann1, N Hosten, N Anders
1Strahlenklinik und Poliklinik, Virchow-Klinikum, Berlin, Germany.
Neuroradiology
|April 17, 1999
Summary
High-resolution MRI with contrast enhancement effectively diagnoses lacrimal system stenosis. This imaging technique identified duct obstructions in 18 of 22 evaluated eyes, aiding clinical decisions.
Area of Science:
- Ophthalmology
- Radiology
- Medical Imaging
Background:
- Epiphora, or excessive tearing, can significantly impact quality of life.
- Suspected stenosis or obstruction of the lacrimal drainage system is a common cause of epiphora.
- Accurate diagnosis is crucial for effective treatment planning.
Purpose of the Study:
- To evaluate the utility of high-resolution magnetic resonance imaging (MRI) with conjunctival contrast enhancement for diagnosing lacrimal system stenosis.
- To determine the location and extent of obstructions within the lacrimal drainage pathway.
Main Methods:
- 18 patients (22 eyes) with suspected epiphora underwent high-resolution MRI.
- Conjunctival and intravenous contrast (Gd-DTPA) was administered.
- A surface coil was utilized for enhanced imaging detail.
Main Results:
- Stenosis or obstruction was identified in 18 of 22 affected eyes.
- Obstructions were located at the canalicular level (3 eyes), lacrimal sac (7 eyes), and nasolacrimal duct (8 eyes).
- Periductal pathology was noted in three cases, often associated with prior sinus or dacryocystorhinostomy surgery.
Conclusions:
- High-resolution MRI with conjunctival contrast enhancement is a valuable tool for diagnosing lacrimal system stenosis and obstruction.
- The technique accurately identifies the location of blockages, aiding in surgical and non-surgical management.
- MRI findings, correlated with clinical assessments like syringing and dacryocystography, provide comprehensive diagnostic information.