Abstract
This work is intended to develope an endoscopic ESPI (electronic speckle pattern interferometry) system for medical measurements of the stiffness and extensibility of the tissues, the pulse propagation to the surrounding tissues, the movement due to respiration, etc. A ESPI system composed of a CCD camera, a frame memory, a 16 bit micro-computer and fiber optics, etc. was constructed. Using this system and several methods in data processing, speckle interferograms were sucessfully produced not only for metal objects but also for biological tissues. A method developed in this work has an advantage in applicability to inspections of transient phenomena using double pulsed lasers. A veiew of using this endoscopic ESPI system for medical diagnosis has been obtaind.
