BJU Int. 2022 Feb 23. doi: 10.1111/bju.15718. Online ahead of print.
ABSTRACT
OBJECTIVE: To introduce a wireless high-definition endoscopic system (WHES) and compare it with a Storz HD system in image resolution, color resolution, weight and costs.
MATERIALS AND METHODS: The WHES incorporated a portable LED light source and a wireless camera module, which could be compatible with different types of endoscopes. Images were wirelessly transmitted to a monitor or mobile platform such as smartphone through a receiver. The ISO 12233 resolution chart image was used for the comparison of image resolution and Munsell Color Checker Chart for color resolution. 38 endourologists used a Likert questionnaire to blindly evaluate cystoscopic images from a patient with hematuria. The surgical team was inquired about the overall performance of WHES in twenty laparoscopic adrenalectomies by a nonvalidated subjective survey.
RESULTS: there was no difference in image resolution between the two systems (5.82 vs 5.89 lp/mm). Without lens and respective light sources, there were better purple (ΔE=21.48 vs 28.73), blue (ΔE=34.88 vs 38.6) and red color resolution (ΔE=29.01 vs 35.45) for the camera of WHES (P<0.05), but orange (ΔE=43.45 vs 36.52) and yellow (ΔE=52.7 vs 35.93) resolution were better for the Storz HD camera (P<0.05). Comparing WHES to a Storz laparoscopic system, the Storz system still presented better resolution of orange and yellow, and the resolution of purple, blue and red was similar for the two systems. The expert comments of resolution, brightness, color for cystoscopy were not statistically different, but the ergonomics scores of WHES was higher (3.7 vs 3.33, P=0.038). The overall expense of WHES was $23000-25000 compared with $45000-50000 for a Storz system. There were 100% general satisfaction for WHES in the survey.
CONCLUSION: We developed a new WHES represented the same resolution images and acceptable color resolution with the advantages of wireless connection, small volume, low cost, portability and high-speed wireless transmission.
PMID:35199469 | DOI:10.1111/bju.15718
