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Utility of three dimension fast asymmetric spin‐echo (3D‐FASE) sequences in MR sialographic sequences: model and volunteer studies
Author(s) -
Morimoto Y,
Tanaka T,
Kito S,
Tominaga K,
Yoshioka I,
Yamashita Y,
Shibuya T,
Matsufuji Y,
Kodama M,
Takahashi T,
Fukuda J,
Ohba T
Publication year - 2005
Publication title -
oral diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.953
H-Index - 87
eISSN - 1601-0825
pISSN - 1354-523X
DOI - 10.1111/j.1601-0825.2004.01052.x
Subject(s) - dimension (graph theory) , volunteer , echo (communications protocol) , nuclear medicine , medicine , nuclear magnetic resonance , mathematics , physics , computer science , biology , combinatorics , computer network , agronomy
Objectives: To evaluate the utility of 3D‐FASE for the visualization of salivary gland ducts for use in MR sialographic sequences. Methods: We compared MR sialographic images and virtual endoscopic views from 3D‐FASE with those from three kinds of sequences described by previous reports in a 3D parotid gland duct model and volunteer. The four sequences were two‐dimension fast spin‐echo (2D‐FSE), three‐dimension fast spin‐echo (3D‐FSE), two‐dimension fast asymmetric spin‐echo (2D‐FASE), and three‐dimension fast asymmetric spin‐echo (3D‐FASE). Results: In the 3D parotid gland duct model, image visibility on visual score was clearest with 3D‐FSE, followed by 3D‐FASE ( P = 0.028). In the volunteers, the visualization of images improved in the following order: 3D‐FASE > 3D‐FSE > 2D‐FSE > 2D‐FASE. Conclusions: The technique of 3D‐FASE sequencing is more suitable and useful for MR sialography with an appropriate acquisition time.