The Comparison of the Image Quality of Portable Miniature and Conventional Light Sources Used in Flexible Cystoscopy: An In Vitro Evaluation

Abstract

Objective: Portability and miniaturization of endoscopic instruments are important in urological practice for flexible cystoscopy in bedside and office conditions. However, the adequacy of portable light sources is doubtful. Thus, this study aimed to compare the portable halogen and conventional light sources in terms of image quality and cost. Materials and Methods: An in vitro model was designed using portable halogen and a conventional endoscopy light source. Two videos of simulated cystoscopy were recorded using the portable and another two using the conventional light source. These videos were rated in the following 5 areas: overall video quality, brightness, sharpness, contrast, and color. The imaging quality of the two light sources was compared. Additionally, the cost analysis was compared in both light sources. Results: The image quality rating was performed by 83 evaluators. The overall video quality, brightness, sharpness, and contrast evaluation revealed a significant difference between the light sources in terms of brightness, and the score was higher in the conventional light source (p