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Material decomposition apparatus, pcct apparatus, and material decomposition method

A substance and subject technology, applied in foreign body detection, medical science, clinical application of radiological diagnosis, etc., can solve the problems of increased calculation amount, long time, hindering diagnosis, etc., and achieve the effect of reducing the calculation amount

Pending Publication Date: 2021-04-13
HITACHI HEALTHCARE MFG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in Patent Document 1, the amount of computation when identifying three or more substances is not considered.
When the number of substances to be identified is 3 or more, the amount of computation increases significantly compared to when 2 substances are identified, so it takes a long time to display a substance identification image, which may hinder the diagnosis

Method used

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  • Material decomposition apparatus, pcct apparatus, and material decomposition method
  • Material decomposition apparatus, pcct apparatus, and material decomposition method
  • Material decomposition apparatus, pcct apparatus, and material decomposition method

Examples

Experimental program
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Effect test

Embodiment 1

[0024] figure 1 The hardware configuration of the substance identification device 1 is shown. A CPU (Central Processing Unit) 2 , a memory 3 , a storage device 4 , and a network adapter 5 are connected via a system bus 6 so that signals can be transmitted and received, thereby constituting the substance identification device 1 . In addition, the substance identification device 1 is connected to the medical image capture device 10 and the medical image database 11 via the network 9 so as to be able to transmit and receive signals, and is also connected to the display device 7 and the input device 8 . Here, "signals can be transmitted and received" means a state in which signals can be transmitted and received mutually or from one to the other electrically or optically, whether wired or wireless.

[0025] The CPU 2 is a device that controls the operation of each component. The CPU 2 loads and executes programs stored in the storage device 4 and data required for executing the ...

Embodiment 2

[0102] In the first embodiment, the projection data of the object 101 is discriminated into three or more substances. In this embodiment, the identification of image data of the subject 101 as three or more substances will be described. In addition, the same code|symbol is attached|subjected to the structure which has the same function as Example 1, and description is abbreviate|omitted.

[0103] use Figure 9 An example of the flow of processing for generating correction data in this embodiment will be described. In addition, in Figure 9 The case where the correction data used for discriminating three substances is generated is described in .

[0104] (S901)

[0105] Projection data of three substances whose material and size are known, for example, aluminum, polytetrafluoroethylene (PTFE), and acrylic, are measured by the PCCT apparatus 100 . In addition to these substances, it is also possible to measure substances that enter the human body, such as water and calcium,...

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PUM

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Abstract

The invention provides a material decomposition apparatus, a PCCT apparatus, and a material decomposition method, which reduce the amount of computation when three or more materials are identified using radiation data divided into a plurality of energy levels. The material decomposition apparatus for performing decomposition of a material in an object. The apparatus includes a data storage section for storing correction data preliminarily generated by decomposing one of three or more materials into the other two materials, a data input section to which radiation data of the object is inputted, the radiation data being divided into a plurality of energy levels, and a decomposition processing section for repeatedly performing two-material decomposition for decomposition of the other two materials of the three or more materials using the radiation data at different energy levels and the correction data to perform decomposition of the inside of the object into the three or more materials.

Description

technical field [0001] The present invention relates to a substance identification device and a substance identification method for identifying a substance in a subject by using radiation data divided into a plurality of energy levels obtained by a photon counting detector, etc., and particularly relates to reducing the amount of computation for identifying a substance. Background technique [0002] A PCCT (Photon Counting Computed Tomography) device equipped with a photon counting detector employing a photon counting method is being developed. A photon-counting detector can measure the energy of radiation photons incident on the detector, so a PCCT device can present medical images containing more information than existing CT devices. For example, an energy level image that is an image divided into a plurality of energy levels, and a substance identification image that is an image identified as a plurality of substances can be presented. Furthermore, the substance discrimi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03A61B6/12
CPCA61B6/032A61B6/44A61B6/481A61B6/12A61B6/54A61B6/4241A61B6/5217A61B6/582A61B6/583A61B6/585A61B6/545
Inventor 小岛进一横井一磨高桥勋渡边史人寺本冬彦后藤大雅
Owner HITACHI HEALTHCARE MFG LTD