A naked-eye comparison of image quality between a portable versus a fixed camera system for digital flexible ureterorenoscopy - A single centre experience

Arab Journal of Urology
Mohamed El Howairis, Noor Buchholz

Abstract

To assess the image quality using the portable OTV-SI (Olympus, Southend, UK) light source system compared to a dedicated fixed standard stack system for flexible ureterorenoscopy (URS) as judged by the human eye. We compared two differing flexible URS set-ups. The first was our normal completely digital fixed set-up, comprising a flexible ureteroscope and matching digital stack system (CLV-S40 PRO-6E, Olympus). The second set-up comprised the same digital ureteroscope but with a conventional non-digital stack system and the OTV-SI portable light source. Seven experienced urologists were asked to subjectively assess the quality of the video sequences with the naked eye. The image qualities assessed were as follows: colour, distortion, graininess, depth perception, contrast, and glare. Finally, they were asked to guess whether they were observing images from the normal fixed set-up or the portable set-up. Fisher's exact test was used to compare the two sets of nominal variables. There were no significant differences in the observation ratings between the fixed and portable systems, independent of observer or image settings. Also, the surgeons were not able to correctly guess which stack system had been used. For flexible URS ima...Continue Reading

References

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Mar 3, 2011·Journal of Endourology·Dorit E ZilbermanGlenn M Preminger
Oct 7, 2014·Journal of Endourology·Jeffrey J TosoianBrian R Matlaga
Mar 1, 2011·Arab Journal of Urology·Noor BuchholzJunaid Masood
Aug 24, 2016·Annals of African Medicine·Abubakar Danjuma Salisu, Yasir Nuhu Jibril

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