Imaging system for imaging an object

Details Imaging system for imaging an object Imaging system for imaging an object

2007-10-24

2010-12-14

Thomas, Courtney (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S019000, C378S901000

Reexamination Certificate

active

07852978

ABSTRACT:
The present invention relates to an imaging system for imaging an object (20) comprising a polychromatic radiation source (2) and an energy resolving radiation detector (6). The imaging system comprises further a driving device for moving the object (20) and the radiation source (2) relatively to each other, in order to acquire truncated projections from different directions. A calculation unit determines a k-edge component at least of one of the object (20) and a substance within the object (20) from the truncated projections and determines non-truncated projections from the determined k-edge component. A reconstruction unit constructs the object using the non-truncated projections.

REFERENCES:
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patent: 2003/0003054 (2003-01-01), McDonald et al.
patent: 2006/0014938 (2006-01-01), Groman et al.
Llopart, X., et al.; Medipix2: a 64-k Pixel Readout Chip with 55-um Square Elements Working in Single Photon Counting Mode; 2002; IEEE Trans. on Nuclear Science; 49(5)2279-2283.
Llopart X., et al.; First test measurements of a 64k pixel readout chip working in single photon counting mode; 2003; Nuclear Instruments and Methods in Physics Research; A 509:157-163.
Ohnesorge, B., et al.; Efficient correction for CT image artifacts caused by objects extending outside the scan field of view; 2000; Med. Phys.; 27(1)39-46.

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