Noninvasive Optical Imaging System of Biological Tissues

Abstract

The non-invasive optical imaging of biological tissue for the detection of the inhomogeneities is studied using phantom. The proposed system which is based on optical reflectance consists of a scanning probe with four sources and twelve detectors. Every unit furnished with a source and three detectors that are organized in a straight-line design to gather the backscattered photons. Photo-detectors are arranged in four rows and three columns with each source followed by three detectors. The distance between first, second, and third column of detectors with source is kept at 7 mm, 12 mm, and 17 mm respectively to obtain information about inhomogeneities. A phantom is prepared using paraffin wax with inhomogeneities placed at 7 mm, 12 mm, and 17 mm depth. Goat tissue phantom was prepared with muscle with bone placed within the layers of muscle. The probe is placed on the phantom and moved over its surface. Data are collected by the detectors at each location as the probe moves. The data acquired from two distinctive wavelength gives correct information about the range of inhomogeneities.