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- Title
Diagnostic performance of the three-dimensional fast spin echo-Cube sequence in comparison with a conventional imaging protocol in evaluation of the lachrymal drainage system.
- Authors
Zhang, Jing; Chen, Lang; Wang, Qiu-Xia; Liu, Rong; Zhu, Wen-Zhen; Luo, Xin; Peng, Li; Xiong, Wei
- Abstract
Objectives: To compare the three-dimensional (3D)-fast spin-echo (FSE)-Cube with a conventional imaging protocol in evaluation of dacryostenosis. Methods: Thirty-three patients with epiphora underwent examinations using Cube magnetic resonance dacryocystography (MRD) and a conventional protocol, which included 3D fast-recovery fast spin-echo (FRFSE) MRD and two-dimensional (2D)-FSE sequences at 3.0 T. Using lachrymal endoscopic findings as the reference standard, we calculated the sensitivity and specificity of both protocols for detecting lachrymal drainage system (LDS) obstruction and their accuracies in depicting the level of obstruction. Comparable coronal and axial images were selected for bot sequences. Two neuroradiologists graded paired images for blurring, artefacts, anatomic details, and overall image quality. Results: The two methods showed no significant difference in sensitivity (89.5 % vs. 94.7 %; p =0.674), specificity (64.3 %; p =1) or accuracy (86.8 %; p =1) in detecting or depicting LDS obstruction. Blurring and artefacts were significantly better on 2D-FSE images ( p <0.01 and p <0.05, respectively). Anatomic details were significantly better on Cube reformats ( p <0.001). No significant difference existed in overall image quality ( p >0.05). Conclusions: In comparison with the conventional protocol, Cube MRD demonstrates satisfactory image quality and similar diagnostic capability for cases of possible LDS disease. Key Points: • Three-dimensional-FSE-Cube MRD provides high-quality isotropic volumetric images of the LDS • Retrospective studies show 3D-FSE-Cube and 2D-FSE have similar overall image quality • Three-dimensional FSE-Cube MRD potentially reduces the total imaging time for LDS assessment • Three-dimensional FSE-Cube MRD eliminates the possibility of suboptimal plane prescription
- Subjects
MAGNETIC resonance imaging; DACRYOCYSTITIS; LACRIMAL apparatus diseases; DIAGNOSTIC imaging research; MEDICAL imaging systems
- Publication
European Radiology, 2015, Vol 25, Issue 3, p635
- ISSN
0938-7994
- Publication type
Article
- DOI
10.1007/s00330-014-3462-9