Illumination matters Part II: advanced comparative analysis of flexible ureteroscopes in a kidney model by PEARLS.
World J Urol
; 42(1): 298, 2024 May 06.
Article
em En
| MEDLINE
| ID: mdl-38709327
ABSTRACT
PURPOSE:
The aim of the study was to evaluate illumination properties in an in-vitro kidney calyx model in saline. DESIGN ANDMETHODS:
We evaluated a series of contemporary flexible ureteroscopes including the Storz Flex-Xc and Flex-X2s, Olympus V3 and P7, Pusen 7.5F and 9.2F, as well as OTU WiScope using a 3D-printed closed pink kidney calyx model, submerged in saline. A spectrometer was used for illuminance and color temperature measurements at different openings located at center (direct light), 45° (direct and indirect light) and 90°(indirect light) to the axis of the scope.RESULTS:
Maximum illuminance was at the center opening for all scopes (range 284 to 12,058 lx at 50% brightness and 454 to 11,871 lx at 100% brightness settings). The scope with the highest center illuminance (Flex-Xc) was 26 times superior to the scope with the lowest illuminance (Pusen 7.5Fr) at 100% brightness setting. For each scope, there was a peripheral illuminance drop ranging from - 43 to - 92% at 50% brightness and - 43% to - 88% at 100% brightness settings, respectively (all p < 0.01). Highest drop was for the P7 and the Pusen 9.2F. All scopes had illuminance skew, except the V3. All scopes had a warm color temperature.CONCLUSION:
Illumination properties vary between ureteroscopes in an enclosed cavity in saline, and differs at center vs 45° and 90° positions within scopes. Peripheral illuminance drop can be as high as - 92%, which is undesirable. This may affect the choice of ureteroscope and light brightness settings used in surgery by urologists.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Iluminação
/
Ureteroscópios
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Desenho de Equipamento
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Rim
Limite:
Humans
Idioma:
En
Revista:
World J Urol
Ano de publicação:
2024
Tipo de documento:
Article