title: MR sialography in patients with Sjögren syndrome.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the effectiveness of MR sialography of the parotid gland ducts in the diagnosis and staging of Sjögren syndrome.
  
  
  METHODS
  MR imaging was performed on a 1.5-T unit with a neck phased-array coil. MR sialographic source images were obtained using a heavily T2-weighted fast spin-echo sequence with spectral fat suppression. All images were analyzed on the basis of maximum intensity projection reconstruction. Five healthy control subjects and 51 patients with definite Sjögren syndrome (43 with primary disease and eight with secondary disease) were examined with MR sialography. A labial gland biopsy was performed in all patients and histopathologic grading was done by means of focal scores. The findings of MR sialography were compared with the results of labial gland biopsy to determine the effectiveness of the technique in the diagnosis and staging of Sjögren syndrome.
  
  
  RESULTS
  In all five control subjects, the main duct and the primary branching ducts of the parotid glands were clearly visible on MR sialographic images. In patients with Sjögren syndrome, a punctate, globular, cavitary, or destructive appearance was well seen within the parotid glands. Findings obtained at MR sialography correlated well with the results of labial gland biopsy.
  
  
  CONCLUSIONS
  MR sialography has the potential to produce diagnostic findings in the parotid gland ducts of patients with Sjögren syndrome. Our results suggest that this method will augment and possibly replace X-ray sialography.
authors.affiliation: Department of Radiology, Kanazawa Medical University, Ishikawa, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Tonami
authors.forename: Y
authors.initials: Y
authors.lastname: Ogawa
authors.forename: M
authors.initials: M
authors.lastname: Matoba
authors.forename: Y
authors.initials: Y
authors.lastname: Kuginuki
authors.forename: H
authors.initials: H
authors.lastname: Yokota
authors.forename: K
authors.initials: K
authors.lastname: Higashi
authors.forename: T
authors.initials: T
authors.lastname: Okimura
authors.forename: I
authors.initials: I
authors.lastname: Yamamoto
authors.forename: S
authors.initials: S
authors.lastname: Sugai
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001706:Biopsy; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D007091:Image Processing, Computer-Assisted; D008046:Lip / Q000473:pathology; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D010306:Parotid Gland / Q000473:pathology*; D018987:Salivary Ducts / Q000473:pathology*; D012470:Salivary Glands, Minor / Q000473:pathology; D012796:Sialography; D012859:Sjogren's Syndrome / Q000473:pathology*