System and method for inspecting containers for target material
First Claim
1. A method for automatically inspecting a container for a target material using a computed tomography (CT) scanning system, said method comprising:
- performing an initial radiographic scan of the container;
identifying, based at least partially on projection data generated during the initial radiographic scan, at least one location within the container that requires CT inspection;
performing a dual energy CT scan of the at least one identified location within the container based on one of a single energy algorithm and a dual energy algorithm, the dual energy CT scan including a low energy scan of the at least one identified location and a high energy scan of the at least one identified location; and
determining, based on dual energy scan information generated during the dual energy CT scan, whether to confirm or clear an alarm corresponding to the at least one identified location within the container.
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Accused Products
Abstract
A method for automatically inspecting a container for a target material using a computed tomography (CT) scanning system includes performing an initial radiographic scan of the container. Based at least partially on projection data generated during the initial radiographic scan, at least one location within the container is identified that requires CT inspection. A dual energy CT scan of the at least one identified location within the container is performed based on a single energy algorithm or a dual energy algorithm. The dual energy CT scan includes a low energy scan of the at least one identified location and a high energy scan of the at least one identified location. Based on dual energy scan information generated during the dual energy CT scan, a determination is made to confirm or clear an alarm corresponding to the at least one identified location within the container.
17 Citations
28 Claims
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1. A method for automatically inspecting a container for a target material using a computed tomography (CT) scanning system, said method comprising:
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performing an initial radiographic scan of the container; identifying, based at least partially on projection data generated during the initial radiographic scan, at least one location within the container that requires CT inspection; performing a dual energy CT scan of the at least one identified location within the container based on one of a single energy algorithm and a dual energy algorithm, the dual energy CT scan including a low energy scan of the at least one identified location and a high energy scan of the at least one identified location; and determining, based on dual energy scan information generated during the dual energy CT scan, whether to confirm or clear an alarm corresponding to the at least one identified location within the container. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A computed tomography (CT) scanning system for automatically inspecting a container for a target material, said CT scanning system configured to:
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perform an initial radiographic scan of the container; identify, based at least partially on projection data generated during the initial radiographic scan, at least one location within the container that may require additional inspection; generate a slice plan of the at least one identified location; perform a dual energy CT scan of the at least one identified location based on one of a single energy algorithm and a dual energy algorithm, the dual energy CT scan including a low energy scan of the at least one identified location and a high energy scan of the at least one identified location; and determine, based at least partially on dual energy scan information generated during the dual energy CT scan, whether to clear the container.
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28. A computed tomography (CT) scanning system for automatically inspecting a container for a target material, said CT scanning system configured to:
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perform an initial radiographic scan of the container; identify, based at least partially on projection data generated during the initial radiographic scan, a slice plan with at least one location within the container that may require a single energy CT inspection; adjust the slice plan as additional single energy scans are performed; identify objects of interest using an automatic detection algorithm once the slice plan requires no more single energy scans; if at least one object of interest is identified, generate a slice plan of the at least one object of interest; perform a dual energy CT scan of the at least one identified object of interest, the dual energy CT scan comprising a low energy scan of the at least one identified object of interest and a high energy scan of the at least one identified object of interest; determine whether the at least one object of interest includes a target material based at least partially on dual energy scan information generated during the dual energy CT scan; and generate an alarm signal for the container if the at least one object of interest includes the target material.
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Specification