Journal of Neurogastroenterology and Motility : eISSN 2093-0887 / pISSN 2093-0879

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Fig. 1. Process for the conversion of functional luminal imaging probe (FLIP) data to 3-dimensional panometry data. (A) Based on FLIP data obtained from each channel of the probe, the values of each channel are shown in a 2-dimensional plot. The x-axis shows the procedure time (second), and the y-axis shows the diameter (mm) of each channel. (B) The measured diameter data were used to convert FLIP data to 3-dimensional panometry data, and the diameter between each channel was interpolated by the spline method. The spline interpolation method performs interpolation by making interpolation functions of neighboring regions match not only the functional but also the differential value. The 3-dimensional contour plot was created using diameter values obtained through interpolation. (C) The 3-dimensional contour plot is colored according to the diameter. Depending on the diameter, the color changes from red to blue, and a few of the measured diameters less than 5 mm is set to black. (D) Creating 3-dimensional panometry data using the colored 3-dimensional contour plot from Figure 2A. (E) Dimension reduction of 3-dimensional panometry data into the 2-dimensional plot helps check the patient’s condition. (B to E) In each 3-dimensional plot, the x-axis represents the procedure time (second), the y-axis represents the probe channel, and the z-axis represents the diameter (mm) measured at the probe.
J Neurogastroenterol Motil 2022;28:474~482
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