A system for reconstructing optical properties of a diffusing medium including at least one pulsed radiation source capable of illuminating the diffusing medium, at least one first detector of a first type, capable of receiving a signal emitted by the medium, the first detector being a time-resolved detector, and an information processing unit for processing at least one source—first detector pair, a time distribution of the signal received by the corresponding first detector. The reconstruction system also includes at least one second detector of a second type, each second detector being made up of a set of pixel(s) from an image sensor capable of acquiring an image of the medium, and the second detector being capable of measuring an intensity of the signal emitted by the medium, the intensity corresponding to an equivalent moment of order 0 for the corresponding source—second detector pair.