JP4769089B2 - X線撮影装置 - Google Patents
X線撮影装置 Download PDFInfo
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- JP4769089B2 JP4769089B2 JP2006023657A JP2006023657A JP4769089B2 JP 4769089 B2 JP4769089 B2 JP 4769089B2 JP 2006023657 A JP2006023657 A JP 2006023657A JP 2006023657 A JP2006023657 A JP 2006023657A JP 4769089 B2 JP4769089 B2 JP 4769089B2
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- 238000003384 imaging method Methods 0.000 claims description 21
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 230000000875 corresponding effect Effects 0.000 claims description 8
- 230000002596 correlated effect Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 230000001678 irradiating effect Effects 0.000 description 2
- 230000003902 lesion Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000005461 Bremsstrahlung Effects 0.000 description 1
- 206010047571 Visual impairment Diseases 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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- X-Ray Techniques (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Description
12 被写体
13 X線
14 X線源
15 X線検出器
16 処理手段
28 画素
Claims (5)
- X線イメージに視差を生じさせるX線強度分布としたX線を被写体に照射するX線源と、
前記被写体を透過したX線イメージを画像信号に変換する複数の画素を有するX線検出器と、
前記X線検出器の画素毎にその画素と前記X線のX線強度分布に伴う視差に対応した周辺の画素との相関を確認し、相関のある画素のみを真のX線イメージの画像信号として処理する処理手段と
を具備していることを特徴とするX線撮影装置。 - X線源は、中心部とこの中心部に対して交差する周辺位置に位置する複数の周辺部とを有するX線強度分布としたX線を被写体に照射する
ことを特徴とする請求項1記載のX線撮影装置。 - X線源は、X線の発生位置を移動させて視差を生じさせるX線強度分布としたX線を被写体に照射する
ことを特徴とする請求項1または2記載のX線撮影装置。 - 処理手段は、X線検出器によって得られた画像に対して任意の濃度段階で等濃度部分を等高線で繋ぎ、等高線で囲まれる領域を認識し、その領域を囲む等高線に対してX線強度分布との相関を確認し、相関が認められる場合はその領域のコントラストを強調処理する
ことを特徴とする請求項1ないし3いずれか記載のX線撮影装置。 - 処理手段は、X線検出器によって得られた画像に対して連続的に濃度シフトがある境界をエッジと認識し、このエッジとして認識した境界の濃度分布に対してX線強度分布との相関を確認し、相関が認められる場合はそのエッジを強調処理する
ことを特徴とする請求項1ないし3いずれか記載のX線撮影装置。
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JP2006023657A JP4769089B2 (ja) | 2006-01-31 | 2006-01-31 | X線撮影装置 |
Applications Claiming Priority (1)
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JP2006023657A JP4769089B2 (ja) | 2006-01-31 | 2006-01-31 | X線撮影装置 |
Publications (2)
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JP2007202714A JP2007202714A (ja) | 2007-08-16 |
JP4769089B2 true JP4769089B2 (ja) | 2011-09-07 |
Family
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JP2006023657A Active JP4769089B2 (ja) | 2006-01-31 | 2006-01-31 | X線撮影装置 |
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JP (1) | JP4769089B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7496180B1 (en) * | 2007-08-29 | 2009-02-24 | General Electric Company | Focal spot temperature reduction using three-point deflection |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60207041A (ja) * | 1984-03-31 | 1985-10-18 | Toshiba Corp | 放射線断層検査装置 |
JPH0620235B2 (ja) * | 1987-04-15 | 1994-03-16 | 富士写真フイルム株式会社 | 画像信号のノイズ検出方法 |
JPH06233757A (ja) * | 1993-02-12 | 1994-08-23 | Hitachi Ltd | 3次元撮影装置 |
JPH0779961A (ja) * | 1993-09-20 | 1995-03-28 | Hitachi Ltd | 透過像立体撮像表示方法およびその装置 |
US5757951A (en) * | 1994-12-20 | 1998-05-26 | Picker International, Inc. | Correction of off-focal radiation |
JPH09187455A (ja) * | 1996-01-10 | 1997-07-22 | Hitachi Ltd | 位相型x線ct装置 |
JP3363735B2 (ja) * | 1996-06-26 | 2003-01-08 | 松下電器産業株式会社 | X線画像装置 |
JPH1051813A (ja) * | 1996-07-29 | 1998-02-20 | Toshiba Corp | X線ステレオ画像表示装置 |
JPH11288464A (ja) * | 1998-04-03 | 1999-10-19 | Canon Inc | 画像形成装置、方法及びコンピュータ読み取り可能な記憶媒体 |
EP1074001B1 (en) * | 1999-02-18 | 2006-06-21 | Koninklijke Philips Electronics N.V. | Image processing method, system and apparatus for forming an overview image of an elongated scene |
JP2000245731A (ja) * | 1999-03-04 | 2000-09-12 | Toshiba Corp | X線撮影装置 |
JP3995854B2 (ja) * | 1999-06-10 | 2007-10-24 | 富士フイルム株式会社 | 画像処理方法および装置並びに記録媒体 |
JP4170767B2 (ja) * | 2001-04-19 | 2008-10-22 | 株式会社東芝 | 画像処理装置 |
US7120222B2 (en) * | 2003-06-05 | 2006-10-10 | General Electric Company | CT imaging system with multiple peak x-ray source |
JP2005243331A (ja) * | 2004-02-25 | 2005-09-08 | Shimadzu Corp | X線管 |
JP2005237779A (ja) * | 2004-02-27 | 2005-09-08 | Shimadzu Corp | X線ct装置 |
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2006
- 2006-01-31 JP JP2006023657A patent/JP4769089B2/ja active Active
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