JP4551919B2 - 断層撮影の検査システムおよびその方法 - Google Patents
断層撮影の検査システムおよびその方法 Download PDFInfo
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- JP4551919B2 JP4551919B2 JP2007205520A JP2007205520A JP4551919B2 JP 4551919 B2 JP4551919 B2 JP 4551919B2 JP 2007205520 A JP2007205520 A JP 2007205520A JP 2007205520 A JP2007205520 A JP 2007205520A JP 4551919 B2 JP4551919 B2 JP 4551919B2
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- 238000000034 method Methods 0.000 title claims description 29
- 238000007689 inspection Methods 0.000 title claims description 26
- 238000012360 testing method Methods 0.000 claims description 85
- 238000003325 tomography Methods 0.000 claims description 21
- 238000012937 correction Methods 0.000 claims description 18
- 230000005855 radiation Effects 0.000 claims description 17
- 238000004364 calculation method Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims 1
- 229910000679 solder Inorganic materials 0.000 description 13
- 238000011960 computer-aided design Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 238000007792 addition Methods 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000005251 gamma ray Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/044—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using laminography or tomosynthesis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/40—Imaging
- G01N2223/419—Imaging computed tomograph
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- Chemical & Material Sciences (AREA)
- Pathology (AREA)
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- Analytical Chemistry (AREA)
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Theoretical Computer Science (AREA)
- Engineering & Computer Science (AREA)
- Radiology & Medical Imaging (AREA)
- Pulmonology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Description
Claims (11)
- 放射線源と、
影像平面を画定する複数の線形影像検出器と、
前記放射線源と前記影像検出器の間の固定された位置に試験物体を配置する場所と、
異なる視角のもとで獲得された影像をシフト係数およびスケール係数を用いて組み合わせることにより、前記試験物体内部の選択された断面であって前記影像平面と平行な断面影像を生成するコンピュータ装置と、
を備え、
前記コンピュータ装置が、
前記試験物体の歪み補正を決定するために立体画像方法によって獲得した映像を形成し、
前記シフト係数および前記スケール係数の計算に適用され、前記試験物体の高さ方向の歪みを補正するための歪み補正を決定し、
前記放射線源および前記影像検出器が、前記試験物体の全領域にまたがる平行な線形走査経路のサイクルにより前記試験物体を走査して、異なる視角のもとでの前記試験物体の影像を獲得するように構成されている、断層撮影検査システム。 - 前記シフト係数および前記スケール係数が、前記影像平面に平行な2つの座標軸に対して決定されている、請求項1に記載のシステム。
- 前記シフト係数および前記スケール係数が、前記試験物体内の選択された断面の焦点面に対する高さ、前記放射線源と前記影像平面の間の距離、前記放射線源と前記焦点面の間の距離、2つの検出器の間の距離、および2つの連続する走査経路の間の長さの増分を含む複数のパラメータによって決定される、請求項1に記載のシステム。
- 前記線形走査経路に平行な座標軸に対する少なくとも1つのスケール係数が、1に等しい、請求項2に記載のシステム。
- 前記放射線源が、前記検出器に突き当たるように、前記試験物体を貫通して進む円錐形のX線ビームを放射するように構成されている、請求項1に記載のシステム。
- 前記放射線源および前記影像検出器が、互いに対して独立して駆動される、請求項1に記載のシステム。
- 前記影像検出器が、前記固定式テーブルに対して前記放射線源の反対側に垂直に配置された少なくとも1つの中心の線形検出器、および前記放射線源に対して傾斜した視角に配置された2つの側方の線形検出器を備える、請求項1に記載のシステム。
- 異なる視角のもとでの試験物体の複数の影像データを獲得するように、固定された位置にある試験物体の全領域に亘る複数の平行な線形走査経路を実行するステップと、
前記試験物体内部の選択された断面の断面影像を再構築するように、前記影像データを組み合わせるステップと、
前記シフト係数および前記スケール係数を計算するために使用され、前記試験物体の高さ方向の歪みを補正するための歪み補正を決定するステップと、を含み、
前記影像データを組み合わせるステップが、前記獲得された影像を組み合わせるために使用されるシフト係数およびスケール係数を計算するステップを含み、
前記試験物体内部の前記選択された断面が、影像平面に平行であり、その影像平面から前記影像データが獲得され、
前記歪み補正が、立体画像方法により獲得された影像データを計算するステップにより決定される、
断層撮影の検査方法。 - 前記シフト係数および前記スケール係数が、前記影像平面に平行な2つの座標軸に対して決定される、請求項8に記載の方法。
- 前記線形走査経路に平行な座標軸に対する少なくとも1つのスケール係数が、1に等しい、請求項9に記載の方法。
- 固定された位置にある試験物体の全領域に亘る複数の平行な線形走査経路を実行するステップが、前記試験物体の全領域に亘る平行な線形走査経路のサイクルの中で、放射線源および影像検出器を同時に移動させるステップを含む、請求項8に記載の方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/756,503 US7529336B2 (en) | 2007-05-31 | 2007-05-31 | System and method for laminography inspection |
Publications (2)
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JP2008298762A JP2008298762A (ja) | 2008-12-11 |
JP4551919B2 true JP4551919B2 (ja) | 2010-09-29 |
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JP2007205520A Active JP4551919B2 (ja) | 2007-05-31 | 2007-08-07 | 断層撮影の検査システムおよびその方法 |
Country Status (4)
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US (1) | US7529336B2 (ja) |
JP (1) | JP4551919B2 (ja) |
CN (2) | CN201199234Y (ja) |
TW (1) | TWI349774B (ja) |
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US20080089567A1 (en) * | 2006-10-11 | 2008-04-17 | Eliasson Tracy K | Artifact reduction in an x-ray imaging system |
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US20080298538A1 (en) | 2008-12-04 |
TW200846655A (en) | 2008-12-01 |
US7529336B2 (en) | 2009-05-05 |
CN101315341A (zh) | 2008-12-03 |
CN201199234Y (zh) | 2009-02-25 |
JP2008298762A (ja) | 2008-12-11 |
CN101315341B (zh) | 2012-05-23 |
TWI349774B (en) | 2011-10-01 |
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