Image analysis of interarytenoid area to detect cases of Laryngopharyngeal Reflux: An objective method

Publication date: Available online 28 November 2017
Source:American Journal of Otolaryngology
Author(s): Anindya Nayak, Sunil Kumar, Rubeena Arora, Gautam Bir Singh
PurposeTo diagnose Laryngopharyngeal Reflux by observing colour (Red, Green, Blue) at the interarytenoid area during 70° laryngeal endoscopy.Materials and methodsEndoscopic images from 50 normal controls and 50 patients of LPR were obtained in this observational study. LPR patients were selected on the basis of RSI and RFS. Images were analysed using ImageJ, a free image analysis software, developed by the National Institute of Health (NIH). Colour changes in the form of RGB (red, green, blue) values were calculated and analysed at the interarytenoid area. The values in the normal and patient group were compared and correlated with RSI and RFS.ResultsRGB values of the LPR group and the normal group were statistically different (P value<0.01). Strong correlation was also found between R and G values and both RFS and RSI. However, no correlation was seen with B values.ConclusionImage analysis is an easy, economical and objective method to diagnose LPR.



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