Method for respiration-correlated computed tomography imaging

A tomography, computer technology, applied in the field of computed tomography imaging

Inactive Publication Date: 2017-08-29
SIEMENS HEALTHCARE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This in turn leads to undesired artifacts in the final reconstruction

Method used

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  • Method for respiration-correlated computed tomography imaging
  • Method for respiration-correlated computed tomography imaging
  • Method for respiration-correlated computed tomography imaging

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Embodiment Construction

[0036] figure 1 An exemplary breathing curve 1 of a patient is shown. The breathing curve 1 is measured or recorded as a breathing surrogate using an external sensor, such as a spirometer or stretching tape. For the control of the computed tomography scan, which provides a plurality of raw images of the patient's examination region, the acquired patient-specific respiration curve is evaluated online. The scan is then controlled based on the results of the online evaluation. Corresponding devices and corresponding device parts for this purpose are in Figure 4 shown in .

[0037] Scanning is controlled by synchronously acquired respiration curves via online evaluation, in particular ensuring position z in the patient's examination area k At , raw data consistent enough with a complete respiratory cycle were recorded to enable reconstruction of a 3D image of the examined region without artifacts caused by breathing irregularities.

[0038] under these circumstances, figure...

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Abstract

In a method and apparatus for respiration-correlated computed tomography imaging, a patient-specific breathing curve is recorded and is evaluated online, and a CT scan, providing a number of raw images of a region of interest of a patient, is controlled synchronously with the patient-specific breathing curve according to the results of the online evaluation.

Description

technical field [0001] The invention relates to a method for performing respiration-related computed tomography imaging. Background technique [0002] Computed tomography (CT) is an X-ray method for displaying three-dimensional objects in cross-sectional images by analyzing raw images. In contrast to conventional fluoroscopy X-ray imaging, which can only detect relatively coarse structures and bones, in CT imaging it is also possible to capture soft tissues in detail with small contrast differences. Computed tomography images can be produced in two dimensions (2D-CT) or three dimensions (3D-CT). In three-dimensional computed tomography, an absorption contour of the region to be examined is created from multiple directions, and the volumetric structure of the region under examination (3D-CT volume) is reconstructed therefrom. [0003] Reconstructed 3D-CT volumes are currently routinely used for radiation planning eg in radiotherapy for lung and abdominal cancers. The goal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03A61B5/091A61B5/11A61B5/107G06T7/00
CPCA61B5/091A61B5/1072A61B5/1135A61B6/032A61B6/4021A61B6/4429A61B6/466A61B6/5217G06T7/0012G06T2207/10081A61B5/0816A61B5/0823A61B5/087A61B5/1127A61B5/7246A61B5/7292A61B6/5264A61B6/541A61B2505/05A61B2562/0261
Inventor C.霍夫曼
Owner SIEMENS HEALTHCARE GMBH
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