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Computed Tomography (CT) Hybrid Data Acquisition

A technology of hybrid data and acquisition system, applied in computer tomography, echo tomography, etc., can solve the problem of uneconomical and expensive

Active Publication Date: 2018-01-16
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, CT systems configured for phase-contrast imaging and those that include spectral (e.g., energy-resolving and / or photon-counting) detectors are often expensive relative to non-phase-contrast systems, which may make them cost-effective. Cost-effective

Method used

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  • Computed Tomography (CT) Hybrid Data Acquisition
  • Computed Tomography (CT) Hybrid Data Acquisition
  • Computed Tomography (CT) Hybrid Data Acquisition

Examples

Experimental program
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Embodiment Construction

[0027] initial reference figure 1 , schematically illustrates an example imaging system 100, such as a computed tomography (CT) scanner.

[0028] The rotating gantry 204 is rotatably supported by the stationary gantry 202 and rotates about an examination region 206 about a longitudinal or z-axis. A radiation source 208 , such as an X-ray tube, is rotatably supported by and rotates with the rotating gantry 204 and emits radiation across an examination region 206 and a portion of an object or target therein. A source grating 210 is arranged adjacent to the source 208 and filters a subsection of the radiation beam such that radiation traversing the examination region 206 includes at least a subsection with individually coherent but mutually incoherent rays. In case the radiation source 208 generates such radiation, the source grating 210 can be omitted.

[0029] Hybrid data acquisition system 210 is positioned opposite radiation source 208 across examination region 206 . Hybri...

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PUM

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Abstract

An imaging system (200) includes a radiation source (208) that emits radiation that traverses an examination region. The imaging system further includes a hybrid data acquisition system (212) that receives radiation that traverses the examination region. The hybrid data acquisition system includes a phase-contrast sub-portion (304) spanning a sub-portion of a full field of view. The hybrid data acquisition system further includes at least one of an integrating portion (302, 702, 804, 806, 902) or a spectral portion (402, 704, 706, 802, 1002) spanning the full field of view. The hybrid data acquisition system generates a phase-contrast signal and at least one of an integration signal or a spectral signal. The imaging system further includes a reconstructor (216) that reconstructs the phase-contrast signal and at least one of the integration single or the spectral signal to generate volumetric image data indicative of the examination region.

Description

technical field [0001] The following generally relates to data acquisition, and more particularly to hybrid phase contrast data acquisition systems and / or methods for computed tomography (CT). Background technique [0002] With CT, contrast is obtained by differences in the absorption cross-sections of the constituents of the scanned object. This has yielded good results in which a highly absorbent structure such as bone is embedded in a matrix of relatively weakly absorbent material (eg the surrounding tissue of the human body). However, in the case of investigating (eg mammography or abdominal imaging) different forms of tissue with similar absorption cross-sections, X-ray absorption contrast is relatively poor. Therefore, it remains difficult for a particular tissue to differentiate pathologically from non-pathological tissue in absorption radiographs obtained with current hospital-based X-ray systems. [0003] Phase contrast imaging overcomes the contrast limitations m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/03
Inventor M·格拉斯T·克勒R·普罗克绍
Owner KONINKLJIJKE PHILIPS NV