OPTICAL DYNAMIC IMAGING SYSTEM

摘要

The dynamic positioning of sensors, which exploit the mechanical and physiological changes in tissues, can significantly increase the performance in characterization of tumors. Here, we disclose the Optical Dynamic Imaging (ODI) System for tumor characterization. ODI System estimates size, depth, elastic modulus and optical properties of embedded objects. The ODI System consists of a tactile imaging sensor (TIS), and a near infrared diffuse spectral imaging. To obtain mechanical properties of the target, we compress the region of interest with the probe, then the light from the probe is scattered and captured by the camera as a tactile image. On the other hand, using a light source and the camera as a detector, we obtain the diffuse spectral images. From these images, we compute the absorption coefficient of the embedded tumor phantom. We move the source-detector simultaneously and collect optical information. We termed this maneuver as dynamic positioning. Optical Dynamic Imaging System also provides position and orientation of the light source and the detectors. The combination of the absorption coefficient and tactile data along with location information improves the size, depth, and elastic modulus estimation.

主权项

1. A diffuse transmissive optical monitor for measuring a width of a target inclusion in a turbid medium, comprising:
a light source that in use produces a beam of light; a light detector positioned facing the beam of light to receive light from the source; and a positioning unit operative to scan the light source and the light detector on opposite sides of the medium transversely to the optical axis while the light beam remains parallel to a central axis through a middle point of the target inclusion; wherein the light detector in use detects variations in light received from the light source as the light beam passes across the target inclusion; and the monitor is configured to estimate from the variations a width of the target inclusion.