| 系統提供動物活體綠色熒光蛋白的實時觀察與成像等一系列的熒光檢測。能夠應用在像深度腫瘤，大動物等活體腫瘤追蹤觀察成像研究。 該設備是一個高靈敏度的圖像成像工作系統，主要利用特定波長的激光進行激發后，通過高靈敏度的致冷CCD進行實時檢測后，獲得所需的各類 特性的圖像，有利于進一步的分析作用 。 采用高靈敏度CCD成像系統， 通過長時間積分功能，可拍攝人的肉眼不可見熒光信號，實現成像。 Imaged using a Zoom Lens with 515nm viewing filter and Macro-ImagerCamera, 470nm excitation using the Illumatool TLS LT-9500 same mouseboth images . Mouse Images Courtesy of AntiCancer , Inc |
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Time-dependent whole-body fluorescence tomography of probe bio-distributions in mice
We present a fast scanning fluorescence optical tomography system for imaging the kinetics of probe distributions through out the whole body of small animals. Configured in a plane parallel geometry, the system scans a source laser using a galvanometer mirror pair (τswitch~1ms) over flexible source patterns, and detects excitation and emission light using a high frame rate low noise, 5 MHz electron multiplied charge-coupled device (EMCCD) camera. Phantom studies were used to evaluate resolution, linearity, and sensitivity. Time dependent (δt=2.2 min.) in vivo imaging of mice was performed following injections of a fluorescing probe (indocyanine green). The capability to detect differences in probe delivery route was demonstrated by comparing an intravenous injection, versus an injection into a fat pocket (retro orbital injection). Feasibility of imaging the distribution of tumor-targeted molecular probes was demonstrated by imaging a breast tumor-specific near infrared polypeptide in MDA MB 361 tumor bearing nude mice. A tomography scan, at 24 hour post injection, revealed preferential uptake in the tumor relative to surrounding tissue.
