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| Clinical application value of MR dacryocystography using 3D FIESTA to analyze the cause of epiphora |
| WANG Yue, ZHOU Jun, CHEN Lin-lin, LI Dan, LIU Xue, ZHU Yue, LI Cong |
| Shenyang the 4th Hospital of People, Shenyang 110031, China |
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Abstract Objective: To explore the value of MR dacryocystography using three-dimensional fast imaging employing steady-state acquisition(3D FIESTA) to analyze the cause of epiphora. Methods: Fifty epiphora patients(64 epiphora sides and 36 healthy sides) underwent MRI lacrimal examination. 0.9% NaCl saline was dropped to bilateral conjunctival sac four times before the exam. The scanning sequences included 3D FIESTA, three-dimensional fast recovery fast spin echo(3D-FRFSE) and fast recovery fast spin echo(FRFSE T2WI). The original images were processed with curve and maximum intensity projection(MIP). The structure around lacrimal ducts was observed and the reason and obstruction position of lacrimal ducts were ananlyzed. All patients underwent expert endoscopy examination and treatment within one week after the MRI scanning. 3D FIESTA, 3D-FRFSE and FRFSE T2WI results were compared with endoscopy results. Results: Compared with endoscopy results of 64 epiphora sides, 3D FIESTA could display the cause and position of obstruct in 61 sides(95.3%), FRFSE T2WI could display the cause and position of obstruct in 53 sides(82.8%), 3D-FRFSE could not display the cause of obstruct, but could display the obstruct position in 42 sides(65.6%). 3D FIESTA obviously preceded FRFSE T2WI and 3D-FRFSE, and the difference was statistically significant（χ2=14.135, P<0.05）. Two lacrimal dysfunction and 1 stenosis of punctum were missed by all these three techniques. Conclusion: 3D FIESTA obviously precedes 3D-FRFSE and FRFSE T2WI for analysis of the cause of epiphora, and it has important effect on choice of clinical treatment plan.
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Received: 14 August 2014
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2015, Vol. 26 
