Patent ID: 7095820

Claim:
A method for examining an object comprising the steps of: producing ionizing radiation photons; providing other particles or photons, said other particles or photons having participated in the production of said ionizing radiation photons, being produced through interaction of said ionizing radiation photons with matter, or being produced simultaneously with the production of said ionizing radiation photons; wherein each of said other particles or photons carries information regarding position at a given point of time, time of arrival at a given position, movement direction, and/or energy of a respective one of said ionizing radiation photons before having interacted with said object to be examined; detecting each of said other particles or photons to retrieve said information of a respective one of said ionizing radiation photons before having interacted with said object to be examined; causing said ionizing radiation photons to interact with said object to be examined; detecting at least some of said ionizing radiation photons after having interacted with said object to be examined to retrieve information regarding position at a given point of time, time of arrival at a given position, movement direction, and/or energy of each of said detected ionizing radiation photons; correlating each of said detected ionizing radiation photons with a respective one of said other particles or photons; and deducing information of said examined object by means of said information as retrieved in said steps of detection.