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[Dynamic magnetic resonance dacryocystography using half Fourier single shot fast spin echo sequence]
Y Takehara1, K Kurihashi, H Isoda
1Department of Radiology, Hamamatsu University School of Medicine.
Nihon Igaku Hoshasen Gakkai Zasshi. Nippon Acta Radiologica
|October 21, 1998
Summary
Dynamic magnetic resonance dacryocystography (MRD) offers a reliable, non-radiation method for diagnosing nasolacrimal duct obstruction. This technique accurately identifies blockages in the lacrimal sac and duct, aiding in epiphora treatment.
Area of Science:
- Ophthalmology
- Radiology
- Medical Imaging
Context:
- Epiphora, or excessive tearing, often results from nasolacrimal duct obstruction.
- Conventional diagnostic methods may involve ionizing radiation or invasive procedures.
Purpose:
- To evaluate the efficacy of dynamic magnetic resonance dacryocystography (MRD) as a non-invasive diagnostic tool for nasolacrimal duct obstruction.
Summary:
- Dynamic MRD was performed using a 1.5T MRI scanner and a standard head coil.
- Polyethylene microcatheters were inserted into the lower lacrimal canaliculi, and a saline-xylocaine mixture was injected.
- Heavily T2-weighted SSFSE sequences depicted lacrimal sac and duct pathologies, accurately pinpointing obstruction levels in five epiphora cases.
Impact:
- Dynamic MRD provides a reliable, radiation-free alternative for diagnosing nasolacrimal duct obstruction.
- Findings were confirmed by X-ray dacryocystography and intraoperative results.
- This method avoids chemical contrast agents, enhancing patient safety.