1. A method for Fast Neutron Imaging, comprising: (a) providing a fast neutron imaging apparatus comprising a neutron source, and a detector wherein the detector comprises a neutron sensitive scintillator optically coupled to at least one position sensitive optical photon sensor and wherein the detector acquires position and energy deposition information for each individual event of neutron interaction in the scintillator; (b) producing a fast neutron beam; (c) directing the fast neutron beam through a sample; (d) allowing the portion of said neutron beam that does not interact with the sample to pass from said sample to the scintillator without any filtering; (e) detecting individual neutron events in the scintillator; and (f) collecting position and energy deposition information for each individual event of neutron interaction in the scintillator.