JP2020000461A5 - - Google Patents
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- JP2020000461A5 JP2020000461A5 JP2018122354A JP2018122354A JP2020000461A5 JP 2020000461 A5 JP2020000461 A5 JP 2020000461A5 JP 2018122354 A JP2018122354 A JP 2018122354A JP 2018122354 A JP2018122354 A JP 2018122354A JP 2020000461 A5 JP2020000461 A5 JP 2020000461A5
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- 239000000126 substance Substances 0.000 claims description 28
- 238000002601 radiography Methods 0.000 claims description 15
- 230000000875 corresponding Effects 0.000 claims 5
- 238000011156 evaluation Methods 0.000 claims 4
- 238000003384 imaging method Methods 0.000 claims 3
- 239000000463 material Substances 0.000 claims 3
- 238000000605 extraction Methods 0.000 claims 2
- 239000000284 extract Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
Description
本発明の一態様による放射線撮影装置は以下の構成を備える。すなわち、放射線撮影装置は、異なる放射線のエネルギーで撮影した放射線画像に含まれる複数の物質について物質特性画像を生成する生成手段と、
前記複数の物質の位置として前記放射線画像における画素または複数の画素により構成される領域ごとに異なる放射線エネルギーを設定し、前記異なる放射線エネルギーに基づいて再構成画像を生成する再構成手段と、
を備えることを特徴とする。
The radiography apparatus according to one aspect of the present invention has the following configurations. That is, the radiography apparatus is a generation means for generating a substance property image for a plurality of substances contained in radiographic images taken with different radiation energies.
Reconstruction means that sets different radiation energies for each pixel in the radiation image or a region composed of the plurality of pixels as the positions of the plurality of substances, and generates a reconstruction image based on the different radiation energies.
It is characterized by having.
Claims (21)
前記複数の物質の位置として前記放射線画像における画素または複数の画素により構成される領域ごとに異なる放射線エネルギーを設定し、前記異なる放射線エネルギーに基づいて再構成画像を生成する再構成手段と、
を備えることを特徴とする放射線撮影装置。 A generation means for generating material property images for multiple substances contained in radiation images taken with different radiation energies, and
Reconstruction means that sets different radiation energies for each pixel in the radiation image or a region composed of the plurality of pixels as the positions of the plurality of substances, and generates a reconstruction image based on the different radiation energies.
A radiographing apparatus characterized in that it is provided with.
前記再構成手段は、前記エネルギーテーブルを参照して、前記複数の物質の位置ごとに異なる放射線エネルギーを設定することを特徴とする請求項1乃至8のいずれか1項に記載の放射線撮影装置。 Further provided with a means for creating an energy table that associates the plurality of substances with the different radiation energies.
The radiographing apparatus according to any one of claims 1 to 8, wherein the reconstructing means sets different radiation energies for each position of the plurality of substances with reference to the energy table.
前記作成手段は、前記再構成画像を解析し、前記複数の物質のコントラストに関する評価情報を取得することを特徴とする請求項9に記載の放射線撮影装置。 The reconstructing means sequentially generates the reconstructed image based on different radiation energies whose settings have been changed stepwise.
The radiography apparatus according to claim 9, wherein the creating means analyzes the reconstructed image and acquires evaluation information regarding the contrast of the plurality of substances.
前記再構成手段は、前記複数の物質の実効原子番号及び前記放射線エネルギーに対応する減弱係数に対応する減弱係数の情報と、前記複数の物質の面密度の分布を示す面密度画像とに基づいて、前記再構成画像を生成することを特徴とする請求項1乃至15のいずれか1項に記載の放射線撮影装置。 Further provided with a storage means for storing a table holding information on the effective atomic numbers of the plurality of substances and the attenuation coefficient corresponding to the radiation energy.
The reconstructing means is based on information on the effective atomic numbers of the plurality of substances and the attenuation coefficient corresponding to the attenuation coefficient corresponding to the radiation energy, and the surface density image showing the distribution of the areal density of the plurality of substances. The radiography apparatus according to any one of claims 1 to 15, wherein the reconstructed image is generated.
前記複数の物質の位置として前記放射線画像における画素または複数の画素により構成される領域ごとに異なる放射線エネルギーを設定し、前記異なる放射線エネルギーに基づいて再構成画像を生成する再構成手段と、
を備えることを特徴とする放射線撮影装置。 Extraction means for extracting multiple substances contained in radiation images taken with different radiation energies,
Reconstruction means that sets different radiation energies for each pixel in the radiation image or a region composed of the plurality of pixels as the positions of the plurality of substances, and generates a reconstruction image based on the different radiation energies.
A radiographing apparatus characterized in that it is provided with.
前記表示制御手段は、前記再構成画像の表示とともに、異なる放射線エネルギーの設定を連続的に変更するユーザーインターフェイスを前記表示手段に表示させることを特徴とする請求項1乃至17のいずれか1項に記載の放射線撮影装置。 A display control means for displaying the reconstructed image on the display means is further provided.
The display control means according to any one of claims 1 to 17, wherein the display means displays a user interface for continuously changing the setting of different radiation energies together with the display of the reconstructed image. The radiographer described.
異なる放射線のエネルギーで撮影した放射線画像に含まれる複数の物質について物質特性画像を生成する生成工程と、
前記複数の物質の位置として前記放射線画像における画素または複数の画素により構成される領域ごとに異なる放射線エネルギーを設定し、前記異なる放射線エネルギーに基づいて再構成画像を生成する再構成工程と、
を有することを特徴とする放射線撮影方法。 It is a radiography method using a radiography device.
A generation process that generates material property images for multiple substances contained in radiation images taken with different radiation energies,
A reconstruction step in which different radiation energies are set for each pixel in the radiation image or a region composed of the plurality of pixels as the positions of the plurality of substances, and a reconstruction image is generated based on the different radiation energies.
A radiographic imaging method characterized by having.
異なる放射線のエネルギーで撮影した放射線画像に含まれる複数の物質を抽出する抽出工程と、
前記複数の物質の位置として前記放射線画像における画素または複数の画素により構成される領域ごとに異なる放射線エネルギーを設定し、前記異なる放射線エネルギーに基づいて再構成画像を生成する再構成工程と、
を有することを特徴とする放射線撮影方法。 It is a radiography method using a radiography device.
An extraction process that extracts multiple substances contained in radiation images taken with different radiation energies,
A reconstruction step in which different radiation energies are set for each pixel in the radiation image or a region composed of the plurality of pixels as the positions of the plurality of substances, and a reconstruction image is generated based on the different radiation energies.
A radiographic imaging method characterized by having.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2018122354A JP7144988B2 (en) | 2018-06-27 | 2018-06-27 | Radiography apparatus, radiography method and program |
PCT/JP2019/018337 WO2020003744A1 (en) | 2018-06-27 | 2019-05-08 | Radiographic imaging apparatus, radiographic imaging method, and program |
US17/127,302 US11813095B2 (en) | 2018-06-27 | 2020-12-18 | Radiation imaging apparatus, radiation imaging method, and non-transitory computer-readable storage medium |
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JP2018122354A JP7144988B2 (en) | 2018-06-27 | 2018-06-27 | Radiography apparatus, radiography method and program |
Publications (3)
Publication Number | Publication Date |
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JP2020000461A JP2020000461A (en) | 2020-01-09 |
JP2020000461A5 true JP2020000461A5 (en) | 2021-07-29 |
JP7144988B2 JP7144988B2 (en) | 2022-09-30 |
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JP2022056084A (en) * | 2020-09-29 | 2022-04-08 | キヤノン株式会社 | Image processing device, image processing method, and program |
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JP2011172803A (en) * | 2010-02-25 | 2011-09-08 | Ge Medical Systems Global Technology Co Llc | X-ray ct apparatus |
SG186905A1 (en) * | 2010-07-12 | 2013-02-28 | Ge Healthcare As | X-ray imaging at low contrast agent concentrations and/or low dose radiation |
JP5725930B2 (en) * | 2011-03-31 | 2015-05-27 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | Image generating apparatus, X-ray CT apparatus, and program |
WO2016147844A1 (en) * | 2015-03-19 | 2016-09-22 | 株式会社日立製作所 | X-ray ct device and multi-energy image creation method |
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