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Fig. 6 | BMC Medical Imaging

Fig. 6

From: Development of CT-based methods for longitudinal analyses of paranasal sinus osteitis in granulomatosis with polyangiitis

Fig. 6

Change in diameter ratio measurement (DRM) and global osteitis scoring scale (GOSS) in a patient developing mucocele. One of the patients in the stable group with change in GOSS but not much change in DRM is illustrated here where a mucocele developed in the right maxillary sinus. The graphs show the DRM and the GOSS (note: truncated y axis) plotted against the time points of each CT. Above are three images, where the first is the baseline CT with osteitis in both maxillary sinuses, the next shows the CT with lowest DRM due to increased osteitis, and the following is the last CT with markedly bulging of the right lateral nasal wall and thus increasing DRM despite progressive osteitis expressed by the GOSS. Arrows point to the time points of the CT scans

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