title: Dynamic magnetic resonance sialography for patients with xerostomia.
abstract: OBJECTIVE
  The aim was to evaluate the utility of dynamic magnetic resonance (MR) sialographic images as a diagnostic tool for patients with xerostomia as chief complaint.
  
  
  METHODS
  Various parameters of dynamic MR sialographic images from 40 healthy volunteers were compared with those from 28 patients having dry mouth as chief complaint. Dynamic MR sialographic images were acquired using a 1.5-T full-body MR system and 2-dimensional fast asymmetric spin-echo (2D-FASE) sequences. Acquisition of the optimal section using 2D-FASE sequencing with single-section acquisition of thick sections was repeated every 30 s before and after a few drops of 5% citric acid was placed on the tongue. Student t test was used to examine differences between the healthy volunteer and patient groups regarding the maximum area of salivary gland ducts before and after citric acid stimulation.
  
  
  RESULTS
  The maximum area of the detectable ducts in the patient group was significantly smaller (P < 0.001), whereas the change in detectable duct area was significantly lower (P < 0.001).
  
  
  CONCLUSIONS
  This study suggests that dynamic MR sialographic images and data can be useful in the diagnosis of patients with dry mouth as chief complaint.
authors.affiliation: Department of Oral Diagnostic Science, Kyushu Dental Collage, Kitakyushu, Japan.
authors.forename: Tatsurou
authors.initials: T
authors.lastname: Tanaka
authors.forename: Kentaro
authors.initials: K
authors.lastname: Ono
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Ansai
authors.forename: Izumi
authors.initials: I
authors.lastname: Yoshioka
authors.forename: Manabu
authors.initials: M
authors.lastname: Habu
authors.forename: Taiki
authors.initials: T
authors.lastname: Tomoyose
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Yamashita
authors.forename: Ikuko
authors.initials: I
authors.lastname: Nishida
authors.forename: Masafumi
authors.initials: M
authors.lastname: Oda
authors.forename: Hirohito
authors.initials: H
authors.lastname: Kuroiwa
authors.forename: Nao
authors.initials: N
authors.lastname: Wakasugi-Sato
authors.forename: Sachiko
authors.initials: S
authors.lastname: Okabe
authors.forename: Shinji
authors.initials: S
authors.lastname: Kito
authors.forename: Tetsu
authors.initials: T
authors.lastname: Takahashi
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Tominaga
authors.forename: Kiyotoshi
authors.initials: K
authors.lastname: Inenaga
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Morimoto
mesh_terms: D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D010306:Parotid Gland / Q000473:pathology*; D012016:Reference Values; D012463:Saliva / Q000378:metabolism; D018987:Salivary Ducts / Q000473:pathology*; D012796:Sialography / Q000379:methods*; D013268:Stimulation, Chemical; D014987:Xerostomia / Q000473:pathology*