Time of flight aspects for X-Ray fluorescence visualizer, imager, or information provider

An apparatus, comprising:

• a time of flight determining portion configured to determine a total time of flight that indicates an at least one applied duration and an at least one induced duration, wherein the at least one applied duration describes the time for an at least some pulse-type input energy to be applied from a transmission location to an at least one X-ray fluorescing event in at least some matter of the at least the portion of the at least one individual, and wherein the at least one induced duration describes the time for an at least one induced X-ray fluorescing photon, to travel from the at least one X-ray fluorescing event in the at least some matter of the at least the portion of the at least one individual to a location where the at least one induced X-ray fluorescing photon is received at least partially by a detecting the at least one induced X-ray fluorescing photon;
• and
• an X-ray fluorescence locating portion configured to determine a location information of the at least one X-ray fluorescing event in the at least some matter of the at least the portion of the at least one individual based at least partially on the total time of flight.