Swallowing maneuver analysis using 320-row area detector computed tomography (320-ADCT)

Shibata S, Kagaya H, Inamoto Y, Saitoh E, Okada S, Ota K, Kanamori D. Swallowing maneuver analysis using 320-row area detector computed tomography (320-ADCT). Jpn J Compr Rehabil Sci 2011; 2: 54-62 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 320ADCT.