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Time‐resolved three‐dimensional technique for dynamic magnetic resonance dacryocystography
Author(s) -
Sia Paul I.,
Curragh David,
Patel Sandy,
Rajak Saul,
Drivas Peter,
Selva Dinesh
Publication year - 2019
Publication title -
clinical and experimental ophthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.3
H-Index - 74
eISSN - 1442-9071
pISSN - 1442-6404
DOI - 10.1111/ceo.13618
Subject(s) - medicine , magnetic resonance imaging , asymptomatic , dynamic contrast , radiology , prospective cohort study , dynamic imaging , dynamic contrast enhanced mri , surgery , artificial intelligence , image processing , computer science , digital image processing , image (mathematics)
Importance This study introduces a new technique in the assessment of nasolacrimal drainage with magnetic resonance imaging. Background To describe a new dynamic magnetic resonance dacryocystography (MRDCG) protocol and report normative findings on asymptomatic lacrimal drainage systems. Design A prospective observational study at the Royal Adelaide Hospital. Participants Seventeen patients with unilateral epiphora were prospectively recruited. Methods Patients underwent dynamic MRDCG. The time‐resolved angiography with interleaved stochastic trajectories (TWIST) sequence was used to visualise contrast flow through the lacrimal drainage system. Main Outcome Measures Tear transit times and anatomical dimensions were measured. Results Dynamic MRDCG with TWIST sequence reliably demonstrated contrast flow. Tear transit times and anatomical dimensions were comparable to previously reported values in other imaging modalities. Conclusions and Relevance Dynamic MRDCG provides good structural and temporal resolution to the assessment of lacrimal outflow obstructions. The physiological nature of this modality allows potential assessment for functional obstruction and future research on tear flow assessment.