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Improving temporal resolution in cardiac ct

A component and image data technology, applied in image analysis, image data processing, medical automated diagnosis, etc., can solve problems such as high cost

Active Publication Date: 2011-12-28
SIEMENS HEALTHCARE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage here is that the costs for double laying core components such as radiators, detectors, etc. are enormous

Method used

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  • Improving temporal resolution in cardiac ct
  • Improving temporal resolution in cardiac ct
  • Improving temporal resolution in cardiac ct

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Embodiment Construction

[0037] figure 1 Firstly, a first computed tomography system C1 with an image reconstruction device C21 is shown schematically. This is a so-called third-generation CT system, although the invention is not limited to this CT system. In the gantry housing C6 there is a closed gantry, not shown here, on which a first x-ray tube C2 with an opposite detector C3 is arranged. Optionally, in the CT system shown here, a second x-ray tube C4 with an opposite detector C5 is provided, so that a higher temporal resolution can be achieved by additional available emitter / detector combinations, Alternatively, “dual-energy” examinations can also be carried out using different X-energy spectra in the emitter / detector system.

[0038] Furthermore, the CT system C1 has a patient table C8 on which the patient can be pushed along the system axis C9 (also referred to as the z-axis) into the measurement field during the examination, wherein a purely circular scan can also be performed The scan its...

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Abstract

A method is disclosed for the reconstruction of picture data of a moving object under examination from measurement, with the measurement data having been recorded beforehand for a relative rotational movement between a radiation source of a computed tomography system and the object under examination. In at least one embodiment, first picture data is computed from a complete measurement dataset of the measurement data for a picture reconstruction, and second picture data is computed from an incomplete measurement dataset for a computed tomography picture reconstruction. The first picture data and the second picture data are combined into third picture data, with the combination being computed using location-dependent movement information of the object under examination.

Description

technical field [0001] The invention relates to a method for reconstructing image data of a moving examination object from measurement data which were acquired during a relative rotational movement between a radiation source and the examination object of a computed tomography system. Background technique [0002] The tomographic imaging method is characterized in that it enables examination of the internal structure of the examination object without surgical intervention therein. One possible tomographic imaging is to record several projections from different angles of the object to be examined. From these projections, two-dimensional cross-sectional images or three-dimensional volume images of the object under examination can be calculated. [0003] An example of such a tomographic imaging method is computed tomography. Methods of scanning an examination object using a CT system are generally known. For example, circular scans, sequential circular scans with advance or h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03
CPCA61B6/481A61B2019/524A61B6/032A61B6/4441G06T2207/10081A61B6/5264A61B6/486G06T11/006G06T5/002A61B6/5288G06T5/001G06T2207/20221G06T2211/436A61B6/5211G06T11/003A61B6/503G06T2211/412A61B6/507G06T5/50G06T2207/30048A61B2090/3762G16H50/20G06T5/70
Inventor 托马斯.奥尔曼丁格赫伯特.布鲁德托马斯.弗洛尔雷纳.劳佩克哈拉尔德.肖恩杜布卡尔.斯蒂尔斯托弗
Owner SIEMENS HEALTHCARE GMBH
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