Laser speckle contrast imaging compared with indocyanine green in renal perfusion of a porcine model.

IF 0.9 4区 医学 Q4 UROLOGY & NEPHROLOGY Current Urology Pub Date : 2023-06-01 DOI:10.1097/CU9.0000000000000155
Jonathan Noël, Anya Mascarenhas, Chibueze A Nwaiwu, Yao Liu, Marcio Moschovas, Vasiliy E Buharin, John Oberlin, Saloni Mehrotra, Alyson F Dechert, Peter C W Kim, Vipul Patel
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Abstract

Background: When viewed under near-infrared light, indocyanine green (ICG) signal for kidney perfusion can be utilized in partial nephrectomy. Laser speckle contrast imaging (LSCI) uses coherent light to detect perfusion during real-time laparoscopic surgery.

Materials and methods: Laser speckle contrast imaging or ActivSight, an imaging sensor adapter, was used during laparoscopy of an anesthetized porcine kidney model. ActivSight's "perfusion mode" and "quantification mode" displayed the blood flow as a heatmap and numerical signal intensity, respectively.

Results: After the upper segmental renal artery was clamped, ICG was seen in the lower pole, and LSCI showed low unit (dark color) quantification and perfusion in the upper pole. Indocyanine green was retained in the lower pole after the upper segmental artery was unclamped, and LSCI perfusion was demonstrated in the entire kidney.

Conclusions: Laser speckle contrast imaging is a dye-free, repeatable, real-time adjunct for renal parenchymal perfusion assessment applicable to minimally invasive renal surgery to complement the technology of ICG near-infrared fluorescence and advance digital surgery.

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猪模型肾灌注激光散斑造影与吲哚菁绿的比较。
背景:近红外光下观察肾灌注的吲哚菁绿(ICG)信号可用于部分肾切除术。激光散斑对比成像(LSCI)在实时腹腔镜手术中使用相干光检测灌注。材料和方法:采用激光散斑对比成像或成像传感器适配器ActivSight对麻醉猪肾模型进行腹腔镜检查。ActivSight的“灌注模式”和“量化模式”分别以热图和数值信号强度显示血流。结果:上节段肾动脉夹持后,下极可见ICG, LSCI示上极低单位(暗色)量化和灌注。解夹上节段动脉后,下极仍保留吲哚菁绿,可见全肾LSCI灌注。结论:激光散斑造影是一种无染色、可重复、实时的肾实质灌注评估辅助手段,可与ICG近红外荧光技术和先进数字化手术相补充,适用于微创肾外科。
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来源期刊
Current Urology
Current Urology Medicine-Urology
CiteScore
2.30
自引率
0.00%
发文量
96
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