title: MI sensor-aided screening system for assessing swallowing dysfunction: application to the repetitive saliva-swallowing test.
abstract: OBJECTIVE
  Assessment of swallowing dysfunction, particularly the risk of aspiration, is extremely important to clinicians because it provides crucial information for preventing morbidity and mortality from dysphagia. The purpose of this study was to describe a magneto-impedance sensor-aided screening system (MISS) for assessing swallowing function and clarify its effectiveness with the repetitive saliva-swallowing test (RSST).
  
  
  METHODS
  An MI sensor attached to the skin over the sternum detected the distance from a magnet attached to the skin over the thyroid cartilage during swallowing as the change of magnetic fields. The MISS was validated by videofluoroscopic and videoendoscopic observations. Further, the swallowing behavior of 93 individuals was assessed by using the MISS and then analyzed with the RSST. Swallowing behavior can be recorded and investigated objectively by signal inspection in the MISS compared with the conventional methods. The MISS is a simple and straightforward method for recording and safe because of dry swallow. The MISS system was validated by using simultaneous recordings with videofluoroscopic or videoendoscopic examinations, and compared with the conventional RSST method.
  
  
  CONCLUSIONS
  The MISS combined with the RSST is an effective screening test for swallowing function.
authors.affiliation: Department of Oral & Maxillofacial Prosthodontics and Oral Implantology, The University of Tokushima, Institute of Health Biosciences, 3-18-15 Kuramoto, Tokushima 770-8504, Japan. hongama@dent.tokushima-u.ac.jp
authors.forename: Seiko
authors.initials: S
authors.lastname: Hongama
authors.forename: Kan
authors.initials: K
authors.lastname: Nagao
authors.forename: Sachie
authors.initials: S
authors.lastname: Toko
authors.forename: Kyuma
authors.initials: K
authors.lastname: Tanida
authors.forename: Masatake
authors.initials: M
authors.lastname: Akutagawa
authors.forename: Yousuke
authors.initials: Y
authors.lastname: Kinouchi
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Ichikawa
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003679:Deglutition; D003680:Deglutition Disorders / Q000175:diagnosis* / Q000503:physiopathology; D017097:Electric Impedance; D005260:Female; D006801:Humans; D059346:Magnets; D008297:Male; D008875:Middle Aged; D011476:Prosthodontics / Q000379:methods*; D012463:Saliva; D055815:Young Adult