Koninklijke Philips Corporation N.V.

Ge Precision Healthcare LLC

Björn Cederström

Thomas Koehler

Ewald Roessl

Hanns-Ingo Maack

Klaus Erhard

Changlyong Kim

Ronald George Kulas

Mark Adamak

Jon Erik Fredenberg

Mats Vilhelm Lundqvist

Jingyi Liang

Jiayin Ling

Systems and methods are provided for calibrating computed tomography (CT) system. In one example, a method for a computed tomography (CT) system comprises, during a calibration of the CT system, measuring a position of a detector element of a detector array of the CT system using a wire of a wire phantom coupled to a table of the CT system, during a rotational scan performed using the CT system; and during a subsequent scan performed on a subject using the CT system, applying the measured position of the detector element rather than a design target position of the detector element during reconstruction of an image from projection data acquired via the CT system; and displaying the reconstructed image on a display device of the CT system.

Systems and methods for CT detector calibration using a wire phantom

The present invention relates to X-ray imaging technology as well as image post-processing. Particularly, the present invention relates to a method for computer aided detection of structures in X-ray images as well as an X-ray system. A computer aided detection algorithm visibly determines tissue structures in X-ray image information and subsequently matches the shape of a determined tissue structure with a library of known tissue structures for characterizing the type of determined tissue structure. The determination of a tissue structure and thus the characterization of the type of the tissue structure may be enhanced when employing also spectral information, in particular energy information of the acquired X-ray image. Accordingly, a method () for computer aided detection of structures and X-ray images is provided, comprising the steps of obtaining () spectral X-ray image information of an object, wherein the spectral X-ray image information constitutes at least one X-ray image, detecting () a tissue structure of interest in the X-ray image by employing a computer aided detection algorithm, wherein detecting a tissue structure of interest in the X-ray image comprises the computer aided detection algorithm being adapted to evaluate the X-ray image for tissue structure shape and compare the tissue structure shape with a plurality of pre-determined tissue structure shapes and wherein the computer aided detection algorithm is adapted to evaluate spectral information of the X-ray image for detecting the tissue structure of interest.

Method and X-ray system for computer aided detection of structures in X-ray images

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Stockholm, Sweden

Björn Cederström