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. 2023 Feb 28;22:19. doi: 10.1186/s12938-023-01085-z

Fig. 1.

Fig. 1

Imaging and insufflation results. Representative image of the USAF resolution target with smallest resolved pattern identified with an arrow (a), distortion target with 2-mm region of unnoticeable distortion identified by the dashed circle (b), the respective distortion curve as a percentage of image height (c), magnification performance as a function of distance (d), image intensity with representative grayscale values at different illumination levels (e), and insufflation performance for various flow rates (f)