Sialolithiasis MRI

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Mahda Alihashemi M.D. [2]

Overview

Magnetic resonance sialography may be helpful in the diagnosis of sialolithiasis Findings on Magnetic resonance sialography suggestive of sialolithiasis include low signal regions outlined by saliva ( high signal regions) on T2 weighted images. MRI can distinguished acute from chronic obstruction.

MRI

Magnetic resonance sialography may be helpful in the diagnosis of sialolithiasis. Findings on magnetic resonance sialography suggestive of sialolithiasis include:^[1]^[2]^[3]
- Stones are visible as low signal regions outlined by saliva (high signal regions) on T2 weighted images.

Acute from chronic obstruction can be distinguished by magnetic resonance sialography on T1 signals:
- In acute obstruction, enlargement of the gland and inflammatory changes may be seen as reduced signal compared to other side.
- In chronic cases, size of the gland is decreased and fatty atrophy may be seen as an increased signal compared to the other side.

References

↑ Sumi M, Izumi M, Yonetsu K, Nakamura T (1999). “The MR imaging assessment of submandibular gland sialoadenitis secondary to sialolithiasis: correlation with CT and histopathologic findings”. AJNR Am J Neuroradiol. 20 (9): 1737–43. PMID 10543651.
↑ Becker M, Marchal F, Becker CD, Dulguerov P, Georgakopoulos G, Lehmann W, Terrier F (2000). “Sialolithiasis and salivary ductal stenosis: diagnostic accuracy of MR sialography with a three-dimensional extended-phase conjugate-symmetry rapid spin-echo sequence”. Radiology. 217 (2): 347–58. doi:10.1148/radiology.217.2.r00oc02347. PMID 11058627.
↑ Jäger L, Menauer F, Holzknecht N, Scholz V, Grevers G, Reiser M (2000). “Sialolithiasis: MR sialography of the submandibular duct–an alternative to conventional sialography and US?”. Radiology. 216 (3): 665–71. doi:10.1148/radiology.216.3.r00se12665. PMID 10966693.

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[pmid10543651-1] Sumi M, Izumi M, Yonetsu K, Nakamura T (1999). “The MR imaging assessment of submandibular gland sialoadenitis secondary to sialolithiasis: correlation with CT and histopathologic findings”. AJNR Am J Neuroradiol. 20 (9): 1737–43. PMID 10543651.

[pmid11058627-2] Becker M, Marchal F, Becker CD, Dulguerov P, Georgakopoulos G, Lehmann W, Terrier F (2000). “Sialolithiasis and salivary ductal stenosis: diagnostic accuracy of MR sialography with a three-dimensional extended-phase conjugate-symmetry rapid spin-echo sequence”. Radiology. 217 (2): 347–58. doi:10.1148/radiology.217.2.r00oc02347. PMID 11058627.

[pmid10966693-3] Jäger L, Menauer F, Holzknecht N, Scholz V, Grevers G, Reiser M (2000). “Sialolithiasis: MR sialography of the submandibular duct–an alternative to conventional sialography and US?”. Radiology. 216 (3): 665–71. doi:10.1148/radiology.216.3.r00se12665. PMID 10966693.

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