JP6205569B2 - X線ct装置の校正器 - Google Patents
X線ct装置の校正器 Download PDFInfo
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- JP6205569B2 JP6205569B2 JP2013068701A JP2013068701A JP6205569B2 JP 6205569 B2 JP6205569 B2 JP 6205569B2 JP 2013068701 A JP2013068701 A JP 2013068701A JP 2013068701 A JP2013068701 A JP 2013068701A JP 6205569 B2 JP6205569 B2 JP 6205569B2
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- 239000000523 sample Substances 0.000 description 16
- 238000005259 measurement Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229910001750 ruby Inorganic materials 0.000 description 4
- 239000010979 ruby Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229910052790 beryllium Inorganic materials 0.000 description 3
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Description
そして、X線検出器から取得される測定情報から3次元像を再構成して得られる投影イメージのイメージ自体のピクセルサイズ(投影イメージ寸法)に対し、拡大率〔X線管(X線源)とX線検出器との距離/X線管(X線源)と測定対象物(試料)との間の距離〕の逆数をかけることにより、形状寸法を算出できる。前記したように、これらは、内蔵するソフトウエア等を有するコンピュータシステムにより、データ処理され、記録され、表示される。
2 校正器1の円筒体
3 大球
4 中球
5 小球
Claims (1)
- 所定の寸法の円筒体または円柱体の円周の外部に、異なる外径の球を複数個配置することにおいて、各球の中心位置が、前記円筒体または円柱体の外側表面から離間寸法2mmの位置であり、前記円筒体または円柱体の軸に直角な平面の同一円周上に、前記異なる外径の球を4個、90°間隔で固着配置する構造を、前記円筒体または円柱体の一方端より間隔をあけて、2段設置することを特徴とするX線CT装置の校正器。
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JP2013068701A JP6205569B2 (ja) | 2013-03-28 | 2013-03-28 | X線ct装置の校正器 |
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JP2013068701A JP6205569B2 (ja) | 2013-03-28 | 2013-03-28 | X線ct装置の校正器 |
Publications (2)
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JP2014190933A JP2014190933A (ja) | 2014-10-06 |
JP6205569B2 true JP6205569B2 (ja) | 2017-10-04 |
Family
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JP2013068701A Active JP6205569B2 (ja) | 2013-03-28 | 2013-03-28 | X線ct装置の校正器 |
Country Status (1)
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JP (1) | JP6205569B2 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3195802A1 (en) * | 2016-01-19 | 2017-07-26 | Danmarks Tekniske Universitet | Geometrical calibration of x-ray ct scanners |
CN105931202B (zh) * | 2016-04-20 | 2018-02-23 | 广州华端科技有限公司 | 几何校正模体的校正方法和系统 |
JP7038399B2 (ja) * | 2016-10-13 | 2022-03-18 | 地方独立行政法人東京都立産業技術研究センター | Ct装置用校正器 |
EP4019893A1 (en) | 2017-04-21 | 2022-06-29 | Shimadzu Corporation | Utensil for evaluating length measurement error in x-ray ct device for three-dimensional shape measurement |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2700909B1 (fr) * | 1993-01-27 | 1995-03-17 | Gen Electric Cgr | Dispositif et procédé automatique de calibration géométrique d'un système d'imagerie par rayons X. |
JP2001149363A (ja) * | 1999-11-25 | 2001-06-05 | Toshiba Corp | X線キャリブレーションファントム |
JP2004229854A (ja) * | 2003-01-30 | 2004-08-19 | Shimadzu Corp | コーンビームct装置により撮像したct画像の歪み修正方法 |
US7016456B2 (en) * | 2003-10-31 | 2006-03-21 | General Electric Company | Method and apparatus for calibrating volumetric computed tomography systems |
JP5090714B2 (ja) * | 2006-11-08 | 2012-12-05 | 株式会社リガク | 検出値較正方法、x線ct装置、較正用ファントムおよび保持具 |
JP2012189517A (ja) * | 2011-03-13 | 2012-10-04 | National Institute Of Advanced Industrial & Technology | X線ct装置の校正及び評価用の標準ゲージ、並びに該x線ct装置の校正及び評価用の標準ゲージを用いたx線ct装置の校正方法及び評価方法 |
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- 2013-03-28 JP JP2013068701A patent/JP6205569B2/ja active Active
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JP2014190933A (ja) | 2014-10-06 |
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