中文摘要：

目的利用荧光反射成像技术，重建出小鼠下肢外周组织的灌注参数的分布图像。方法BALB/c裸鼠尾静脉注射10μg的吲哚菁绿（ICG）溶液，给药后立即用荧光反射成像系统连续拍摄ICG荧光强度图像，总计时长200S。随后拍取小鼠轮廓的白光图，以获得感兴趣区域（ROI）。用双指数模型对ROI区域的动态荧光数据建模分析，重建出小鼠下肢外周组织的灌注参数图像。结果利用双指数模型获得的荧光强度一时间曲线与测量的灌注曲线接近，并重建出反映小鼠下肢外周组织血液灌注情况的参数分布图。结论提出一种量化分析小鼠下肢外周组织血液灌注状态的方法，重建的灌注参数图像分辨率较高。该方法采用非入侵式活体成像，对实验对象损伤小。

英文摘要：

Objective To reconstruct the perfusion parameters of murine hindlimbs peripheral tissue by using fluorescence reflectance imaging technique. Methods BALB/c mice were injected with intravenous bolus injection of indocyanine green （ICG） （10 μg） into the tail vein. Time-series fluorescence intensity images were obtained for 200 s immediately after the injection. After the serial imaging, silhouette images of the mice were taken under white light to obtain the region of interest （ROI） of the murine hindlimbs. Bi-exponential model was applied to analyze the dynamic fluorescence parameters and the peripheral tissue perfusion parameter images were reconstructed. Results The fitted perfusion curves obtained from bi-exponential model were in good agreement with the measured ones. The parametric images which reflected the vascular sufficiency of murine hindlimbs were reconstructed. Conclusions A novel method for parametric images of murine hindlimbs peripheral tissue blood perfusion is proposed in this paper, which is noninvasive with higher resolution and little damage to biological tissues.