CT imaging system

Details CT imaging system CT imaging system

Filed on

2007-11-29

Date issued

2010-10-12

Examiner

Thomas, Courtney (Department: 2882)

Patent Class

X-ray or gamma ray systems or devices

SubClass

Specific application

SubSubClass

Computerized tomography

Other Related Categories

C378S019000, C378S901000

Type

Reexamination Certificate

Status

active

Patent number

07813472

Description

ABSTRACT:
The invention relates to a CT imaging system for determining the flow of a substance within an object, wherein the CT imaging system comprises a polychromatic X-ray source and an energy-resolving X-ray detector for obtaining detection signals depending on the X-ray radiation after passing through the object. A calculation unit (12) determines a k-edge5component of the substance from the detection signals, and a reconstruction unit (13) reconstructs a time series of k-edge image from the determined k-edge component. A flow determination unit (14) determines flow values indicative for the flow within the object from the time series of k-edge images.

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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; A509:157-163.
Cenic, A., et al.; Dynamic CT Measurements of Cerebral Blood Flow: A Validation Study; 1999; AJNR; 20:63-73.

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