Seiko Shibata MD, DMSc, Hitoshi Kagaya MD, DMSc, Yoko Inamoto SLHT, MSc, Eiichi Saitoh MD, DMSc, Sumiko Okada SLHT, PhD, Kikuo Ota MD, DMSc, Daisuke Kanamori DDS, DMSc
Jpn J Compr Rehabil Sci 2: 54-62, 2011
Objective: Our objective was to examine whether
swallowing maneuvers such as the Mendelsohn
maneuver (MM) and the super-supraglottic swallow
(SSGS) can be analyzed three-dimensionally and
kinematically by using 320-row area detector computed
tomography (320-ADCT).
Methods: The subject was instructed to lean against a
seat reclined at a 45° angle, hold 4 ml of 5% thickened
liquid barium in the oral cavity, and then swallow
normally or using the MM or the SSGS. Data were
acquired for 3.15 s by using 320-ADCT, and images
were reconstructed using a half-reconstruction method.
The timing of each swallowing event was compared
among the 3 swallowing methods.
Results: We were able to determine the timing of
vocal-cord closure and pharyngoesophageal segment
(PES) opening during the normal swallowing method,
the MM, and the SSGS.
Conclusion: Swallowing maneuvers can be analyzed
three-dimensionally and kinematically by using 320-
ADCT.
Key words: 320-ADCT, swallowing maneuver, Mendelsohn maneuver, super-supraglottic swallow