| abstract |
Imaging tumors using diffuse light. An imaging system includes a source (35) of diffuse light for generating oscillatory diffuse photon density waves to illuminate an object (10), a detector (60) for detecting diffuse photon density waves interacting with the object, and a computer (130) interfaced with the detector for processing data corresponding to the photon density waves detected to determine at least a position of the object. In one embodiment, the turbid medium (20) and the object have associated therewith at least one diffusion coefficient and the diffuse photon density waves which illuminate the object refract around the object as a result of their interaction with it, thereby producing a distorted wavefront that allows the computer to construct an image of the object. In another embodiment, a fluorescent object (100) produces re-radiated diffuse photon density waves which allow the object to be imaged. |