  Various imaging methods for small animals are rapidly gaining acceptance in
biology and medical research. Optical imaging is a very fast and convenient
method of biological interrogation, but suffers from significant disadvantages,
such as the absence of 3D image reconstruction algorithms. This have up until
now impeded progress to a quantitative stage. Here we propose a 3D
reconstruction algorithm for imaging light emitted at depths in small living
animals. We believe the methods discussed here are novel and lead to a novel
imaging paradigm, which we call Light Emission Tomography.
