title: Sjögren syndrome: comparison of assessments with MR sialography and conventional sialography.
abstract: OBJECTIVE
  To compare the diagnostic accuracy of magnetic resonance (MR) sialography with that of conventional sialography in the assessment of salivary gland disease in Sjögren syndrome.
  
  
  METHODS
  Thirty-five patients (32 women, three men; age range, 18-69 years) suspected of having Sjögren syndrome were examined with MR sialography and conventional sialography. Gradient and spin-echo MR sialography was performed with a 1.5-T system. MR sialographic findings were compared with conventional sialographic findings.
  
  
  RESULTS
  In 31 (89%) patients, the stage of salivary gland disease determined with MR sialography accurately correlated with that determined with conventional sialography. However, the stage at MR sialography was higher in two patients: They had stage I disease but were determined to have stage II disease. In two other patients, the stage at MR sialography was lower: A patient with stage II disease and a patient with stage III disease were determined to have stage I and stage II disease, respectively. The correlation between the stage at conventional sialography and that at MR sialography (P < .001) can be estimated with the following equation: conventional sialographic stage = 0.021 + 0.982 x (MR sialographic stage). Both the sensitivity and the specificity of MR sialography in the diagnosis of Sjögren syndrome were 100%.
  
  
  CONCLUSIONS
  MR sialography is highly accurate in the evaluation of salivary gland disease in Sjögren syndrome.
authors.affiliation: Department of Dental Radiology, Faculty of Dentistry, Tokyo Medical and Dental University, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Ohbayashi
authors.forename: I
authors.initials: I
authors.lastname: Yamada
authors.forename: N
authors.initials: N
authors.lastname: Yoshino
authors.forename: T
authors.initials: T
authors.lastname: Sasaki
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012796:Sialography / Q000379:methods*; D012859:Sjogren's Syndrome / Q000000981:diagnostic imaging*