Comparative analysis of two modalities for speckle contrast monitoring of tissue structure modification

摘要

Two modalities for speckle contrast monitoring of tissue structure modification in the case of diffuse scattered probe light detection is discussed. The first modality is based on the detection of dynamic speckle patterns in the image plane of the image-transferring optical system while the other one is based on speckle detection in the diffraction zone. In the latter case the combination of the image-transferring lens and fiber-optical bundle is used in order to collect the scattered light and to deliver it to the detection unit. Experimental results obtained using both speckle techniques are presented.