Image generation apparatus, image generation method, and x-ray ct apparatus

An image generation device and image generation technology, applied in the field of X-ray CT devices, can solve problems such as unclear material decomposition images, and achieve the effect of reducing statistical errors

Active Publication Date: 2017-12-01
HITACHI HEALTHCARE MFG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the statistical error is not good, the material decomposition picture will become unclear

Method used

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  • Image generation apparatus, image generation method, and x-ray ct apparatus
  • Image generation apparatus, image generation method, and x-ray ct apparatus
  • Image generation apparatus, image generation method, and x-ray ct apparatus

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Embodiment Construction

[0025] Next, specific embodiments (referred to as “embodiments”) will be described in detail with reference to the drawings as appropriate.

[0026] [X-ray CT device]

[0027] figure 1 It is a figure which shows the schematic configuration diagram of the X-ray CT apparatus of this embodiment.

[0028] The X-ray CT apparatus 100 includes an input device 200 , an imaging device 300 , and an image generation device 400 .

[0029] In addition, the imaging device 300 includes an X-ray generator 310 , an X-ray detection device 320 , a gantry (Gantry: stand) 330 , an imaging control device 340 , and a table A2 for mounting a subject.

[0030] The input device 200 is a device for inputting information for controlling the imaging device 300 . The image generation device 400 acquires the counted projection data captured by the imaging device 300 and performs image processing on the counted projection data.

[0031] In addition, the input device 200 and the image generation device 40...

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Abstract

The purpose of the present invention is to reduce statistical errors in material decomposition images. In order to achieve this purpose, the present invention is characterized by having: a scatter plot generation unit (414) that generates a scatter plot in which the axes represent the concentrations of base materials used in base material decomposition and pixels of a material decomposition image output as a result of the base material decomposition are plotted against the corresponding concentrations of the base materials of the base material decomposition; an angle processing unit (415) that rotates the scatter plot to minimize the statistical errors of plot points plotted thereon; and a pixel conversion unit (416) that converts the pixels of the material decomposition image on the basis of the pixels in the scatter plot where the statistical errors are minimized by the error minimization unit.

Description

technical field [0001] The present invention relates to the technology of an image generation device, an image generation method, and an X-ray CT apparatus for correcting a material decomposition image. Background technique [0002] In an X-ray CT (Computerized Tomography, computerized tomography) device, a current-mode X-ray detector generally detects the structure of an X-ray photon group with continuous (non-monochromatic) energy distribution based on an X-ray tube. However, current mode X-ray detectors have a problem that energy information cannot be acquired. [0003] There are roughly two known techniques for effectively utilizing information based on X-ray groups having a plurality of energy distributions. The first type is dual energy CT (dual energy CT), which is a method of using two continuous energy distributions based on two types of X-ray tube voltages as a detector holding current mode. The second is a technique using a pulse-mode detector capable of obtaini...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03
CPCA61B6/032A61B6/4241A61B6/461A61B6/482A61B6/5205A61B6/5217A61B6/5258G06T11/005G06T11/206G06T2211/408G01N2223/206G01N2223/419G01N2223/6126G16H50/30
Inventor 横井一磨坪田悠史
Owner HITACHI HEALTHCARE MFG LTD
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