Schedin S, Pedrini G, Tiziani H J
Institut für Technische Optik, Universität Stuttgart, Pfaffenwaldring 9, D-70569 Stuttgart, Germany.
Appl Opt. 2000 Jun 1;39(16):2853-7. doi: 10.1364/ao.39.002853.
Digital holograms are recorded of biological tissues by use of a Q-switched double-pulsed ruby laser. An image-plane digital holography setup is used with a CCD camera for capturing two holograms with a short time separation (20-800 micros). Subtraction of the phase distribution in two digital holograms yield a fringe phase map that shows the change in deformation of the tissue surface between the recordings. Experiments are performed on tissue from a pig that was excited by a short-shock pulse and on a human hand that was excited by sinusoidal stimulation. Results when the object is imaged through an endoscope are also presented. The technique could be an approach for measuring parameters like elasticity on biological tissues.
使用调Q双脉冲红宝石激光器记录生物组织的数字全息图。采用图像平面数字全息术装置，搭配电荷耦合器件（CCD）相机，用于在短时间间隔（20 - 800微秒）内捕获两张全息图。对两张数字全息图中的相位分布进行相减，得到一个条纹相位图，该图显示了两次记录之间组织表面变形的变化。对受短脉冲刺激的猪组织和受正弦刺激的人手进行了实验。还展示了通过内窥镜对物体成像时的结果。该技术可能是一种测量生物组织弹性等参数的方法。
