Reproducibility and Agreement of Pharyngeal Automated Impedance Manometry With Videofluoroscopy  Taher I. Omari, Athanasios Papathanasopoulos, Eddy Dejaeger, Lucas Wauters, Emidio Scarpellini, Rita Vos, Sarah Slootmaekers, Veerle Seghers, Liesbeth Cornelissen, Ann Goeleven, Jan Tack, Nathalie Rommel  Clinical Gastroenterology and Hepatology  Volume 9, Issue 10, Pages 862-867 (October 2011) DOI: 10.1016/j.cgh.2011.05.026 Copyright © 2011 AGA Institute Terms and Conditions

Figure 1 Identification of space-time landmarks from the pressure iso-contour plot that was used for AIM analysis by AIMplot. An example 10-mL liquid bolus in a control subject is shown. For illustrative purposes, a radiologic image shows the position of the velopharynx (VP) during swallow outlined in yellow. From the manometric plot, the position of the velopharynx is identified by the pressure zone immediately proximal to the propagated pharyngeal pressure wave. Note: observers did not refer to radiologic images when performing analysis with AIMplot. Clinical Gastroenterology and Hepatology 2011 9, 862-867DOI: (10.1016/j.cgh.2011.05.026) Copyright © 2011 AGA Institute Terms and Conditions

Figure 2 Least square means for measured variables grouped according to bolus type and in relation to aspiration (PAS >3). Clinical Gastroenterology and Hepatology 2011 9, 862-867DOI: (10.1016/j.cgh.2011.05.026) Copyright © 2011 AGA Institute Terms and Conditions

Figure 3 Optimization of aspiration detection criteria for liquid swallows by using SRI. (A) Average κ values and (B) average sensitivity/specificity for SRI levels 1–100. ROC, receiver operating characteristic. Clinical Gastroenterology and Hepatology 2011 9, 862-867DOI: (10.1016/j.cgh.2011.05.026) Copyright © 2011 AGA Institute Terms and Conditions

Figure 4 Example pressure iso-contour plots from database swallows showing the identification of the 3 space-time landmarks that are used for AIM analysis. Dots (○) identify time of swallow onset, the position of the UES proximal margin after swallow, and the position of the velopharynx. Clinical Gastroenterology and Hepatology 2011 9, 862-867DOI: (10.1016/j.cgh.2011.05.026) Copyright © 2011 AGA Institute Terms and Conditions