Patent ID: 9121958
Filing Date: 2015-09-01
Classification: G01V

Abstract:
1. A scanning method for scanning an object moving in a first direction comprising: irradiating the object with radiation; providing a first detector region and a second detector region wherein the second detector region is arranged to receive radiation that has passed through the first detector region, and wherein at least one of said first or second detector regions comprise a plurality of detector arrays comprising a plurality of groups of detection elements such that the detection elements in a leading detector array are offset along a length of the array by a predefined distance from detection elements in a trailing detector array in said detector region; detecting the radiation after it has interacted with the object in order to provide information relating to the object; wherein detecting the radiation comprises capturing a plurality of sets of detection data using different groups of detection elements for providing information relating to a corresponding portion of the object, and wherein each set of detection data is captured at a different time such that each group of detection elements is arranged to provide information on the same portion of the object; and wherein corresponding portions covered by each group are overlapped in a second direction having a component normal to the first direction.