Fluorescence lifetime imaging microscopy: in vivo application to diagnosis of oral carcinoma.

Fluorescence lifetime imaging microscopy: in vivo application to diagnosis of oral carcinoma.
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DOI:
10.1364/ol.34.002081
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发表时间:
2009-07-01
期刊:
影响因子:
3.6
通讯作者:
Marcu L
Marcu L
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Sun Y;Phipps J;Elson DS;Stoy H;Tinling S;Meier J;Poirier B;Chuang FS;Farwell DG;Marcu L

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设计和构建了紧凑的临床兼容荧光寿命成像显微镜 (FLIM) 系统,用于术中疾病诊断,并在仓鼠口腔癌模型中进行体内验证。该装置允许通过由梯度折射率物镜和光纤束组成的灵活成像探头进行远程图像采集。使用栅极宽度低至 0.2 ns 的增强型 CCD 对组织自发荧光(337 nm 激发)进行成像。我们证明了肿瘤组织 (1.77±0.26 ns) 和正常组织 (2.50±0.36 ns) 在 450 nm 处的荧光寿命存在显着差异,并且与正常区域相比,肿瘤区域在 390 nm 处的发射强度降低了 80% 以上。时间分辨图像受组织形态、内源吸收体和照明的影响最小。这些结果证明了 FLIM 作为术中诊断技术的潜力。
A compact clinically compatible fluorescence lifetime imaging microscopy (FLIM) system was designed and built for intraoperative disease diagnosis and validated in vivo in a hamster oral carcinogenesis model. This apparatus allows for the remote image collection via a flexible imaging probe consisting of a gradient index objective lens and a fiber bundle. Tissue autofluorescence (337 nm excitation) was imaged using an intensified CCD with a gate width down to 0.2 ns. We demonstrate a significant contrast in fluorescence lifetime between tumor (1.77±0.26 ns) and normal (2.50±0.36 ns) tissues at 450 nm and an over 80% intensity decrease at 390 nm emission in tumor versus normal areas. The time-resolved images were minimally affected by tissue morphology, endogenous absorbers, and illumination. These results demonstrate the potential of FLIM as an intraoperative diagnostic technique.
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