Method for distinguishing between four materials in...

Details Method for distinguishing between four materials in... Method for distinguishing between four materials in...

2011-05-10

2011-05-10

Glick, Edward J (Department: 2882)

X-ray or gamma ray systems or devices

Electronic circuit

With display or signaling

C378S005000, C378S053000

Reexamination Certificate

active

07940893

ABSTRACT:
A method and a CT system are disclosed having a computation unit for distinguishing between four materials (M1, M2, M3, M4) in tomographic records of a dual-energy CT system, wherein the size of a two-dimensional or three-dimensional viewing area is defined around each voxel whose material content is to be distinguished. In an embodiment of the method, the adjacent voxels from the viewing area on an HU value diagram are imaged for each voxel (Vi) whose material content is to be distinguished, the distances from the diagonals are calculated for all the imaged voxels, and the mean squares of these distances are formed (x12,x22). If the mean square distance (x12,x22) to one diagonal is less than to the other diagonal, then the composition of the voxel is assumed to be composed of the materials to whose diagonal the lower mean square distance (x12,x22) occurs.

REFERENCES:
patent: 5668374 (1997-09-01), DiFoggio et al.
patent: 6987833 (2006-01-01), Du et al.
patent: 2004/0101088 (2004-05-01), Sabol et al.
patent: 2004/0184574 (2004-09-01), Wu et al.
patent: 2006/0251209 (2006-11-01), Tkaczyk et al.
patent: 2007/0030944 (2007-02-01), Grasruck et al.
patent: 2007/0092127 (2007-04-01), Grasruck et al.
patent: 2008/0013672 (2008-01-01), Krauss et al.
patent: 2008/0037699 (2008-02-01), Krauss
patent: 10 2005 049 602 (2007-04-01), None
patent: 102005037367 (2007-04-01), None
patent: 102006015451 (2007-10-01), None
patent: 102006015452 (2007-10-01), None

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