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X-ray CT device

A technology of X-ray and equipment, applied in the directions of instruments, instruments, and applications for radiological diagnosis, which can solve the problems of deterioration of the image quality of biomedical signals and inability to handle fluctuations in the cycle of biomedical signals.

Inactive Publication Date: 2006-12-27
GE MEDICAL SYST GLOBAL TECH CO LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fluctuations in this biomedical signal can lead to deterioration of image quality and thus problems
If the moving speed of the moving object in the z-direction remains constant, the periodic fluctuations of the biomedical signal cannot be dealt with and thus cause problems

Method used

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  • X-ray CT device
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Examples

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Embodiment Construction

[0075] The invention will be described below with reference to the described embodiments as examples. It is to be noted that the present invention is not limited to this embodiment.

[0076] figure 1 The block diagram of shows the structure of the X-ray CT apparatus according to the embodiment of the present invention. This X-ray CT apparatus 100 includes an operator console 1 , a radiographing table 10 , and a scanner gantry 20 .

[0077] The operator console 1 includes: an input device 2, which receives the operator's input; a central processing unit 3, which performs pre-processing, image reconstruction, and post-processing; a data collection buffer 5, which collects the An X-ray detection data item; a monitor 6 on which a tomographic image reconstructed based on a projection data item generated by preprocessing the X-ray detector data item is displayed; and a memory device 7 in which programs, X-ray Detector data items, projection data items, and X-ray tomographic imag...

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PUM

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Abstract

When an X-ray CT apparatus including a two-dimensional X-ray area detector performs a conventional (axial) scan or a cine scan, a plurality of segments of projection data items detected synchronously with an external signal or a biomedical signal is sampled from projection data items acquired during one scan or a plurality of scans. Projection data items corresponding to those detected during a half scan of rotating an X-ray tube by an angle of 180 DEG plus the angle of a fan beam falling on the detector or during a 360 DEG full scan are used to reconstruct a three-dimensional image. Thus, a three-dimensional tomographic image enjoying a high temporal resolution is displayed. Moreover, successive three-dimensional display images showing states of a subject synchronized with respective phases of the external signal or biomedical signal may be displayed as a four-dimensional image.

Description

technical field [0001] The present invention relates to an X-ray computed tomography (CT) method implemented in an X-ray CT apparatus for medical or industrial use, and an X-ray CT apparatus suitable for use in an X-ray CT apparatus for medical or industrial use. More specifically, the invention relates to conventional (axial) or cine scan simultaneous imaging, three-dimensional display, and four-dimensional display or image quality improvement. Background technique [0002] Generally, in an X-ray CT apparatus including a two-dimensional X-ray plane detector having a matrix structure and represented by a multi-array X-ray detector or a flat-panel X-ray detector, an object is helically scanned as Figure 12 shown in . The projection data items obtained during the helical scan constitute a segment which is synchronized with an external synchronization (sync) signal of a certain phase or the biomedical signal of the subject and corresponds to the projection data items obtained ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03A61B6/00G06T7/00G06T11/00
CPCG06T11/005A61B6/032A61B6/027A61B6/4085A61B6/541A61B6/03
Inventor 西出明彦今井靖浩萩原明
Owner GE MEDICAL SYST GLOBAL TECH CO LLC
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