JP5537031B2 - X線断層撮影検査システム - Google Patents
X線断層撮影検査システム Download PDFInfo
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- JP5537031B2 JP5537031B2 JP2008545089A JP2008545089A JP5537031B2 JP 5537031 B2 JP5537031 B2 JP 5537031B2 JP 2008545089 A JP2008545089 A JP 2008545089A JP 2008545089 A JP2008545089 A JP 2008545089A JP 5537031 B2 JP5537031 B2 JP 5537031B2
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Description
nλ=2dsinθ
ここで、
nは整数、
λはX線の波長、
dは対象物内の原子間距離である。
8 走査部
10 多焦点X線放射源
11 放射源ユニット
12 X線検出器アレー
13 導電性金属製サプレッサ
14 点状放射源
15 エミッタ素子
16 走査領域
17 グリッドワイヤ
18 制御部
19 収束ワイヤ
20 コンベヤベルト
21 支持レール
22 X線散乱遮へい部
23 接続部材
24 鉛ゴム製のれん
25 電気的接続部材
26 物品
27 アノード
29 電気的接続部材
30 処理システム
32 電源
34 冷却ラック
40 仕分け装置
42 コンベヤ経路
44 コンベヤ経路
45 回線
46 制御線
47 画面
48 ワークステーション
49 使用者入力部
50 X線検出器
52 多重化ブロック
53 選択ブロック
54 逆投影加重処理エレメント
55 フォーマット処理ブロック
60 危険性検出プロセッサ
62 断層撮影画像データ
63 低レベルパラメータ抽出部
64 決定木
65 データベース検索部
70 RTT走査システム
72 RTT走査システム
74 コンベヤベルト
81b RTT走査装置
81c 中央ループ部
82 RTT走査システム
82b RTT走査装置
82c 各仕分け装置
83b RTT走査装置
83c 各仕分け装置
84 RTT走査システム
84b 仕分け装置
84c 各仕分け装置
85b 仕分け装置
85c RTT走査装置
86 第1の主搬入コンベヤ
86b 仕分け装置
86c RTT走査装置
87b 共通不合格経路コンベヤ
87c RTT走査装置
88 第1の仕分け装置
88b 共通合格経路コンベヤ
88c 共通搬出コンベヤ
89b 予備RTT走査装置
89c 仕分け装置
90 コンベヤ
90b 仕分け装置
92 コンベヤ
94 仕分け装置
96 仕分け装置
98 共通コンベヤ
100 コンベヤ
108 走査システム
109 リアルタイムディスクアレー
110 冗長ビデオ切換部
112 冗長イーサネット(登録商標)切換部
148 操作者用ワークステーション
160 コンベヤベルト
162 主散乱遮へい部
164 走査装置
208 走査ユニット
218 制御ラック
230 処理ラック
232 電源ラック
234 冷却ラック
300 X線ビーム
302 対象物
410 多焦点X線放射源
410a X線点状放射源
412 円状検出器アレー
420 コンベヤ
422 円筒状検出器アレー
422a 検出器
426 対象物
428 コリメータ
500 マルチチャンネルアナライザ
502 多重化処理部
504 参照テーブル
506 画像メモリ
508 メモリ領域
510 投影像シーケンス制御部
512 主RTTデータ取得システム
512a 検出器
512b 検出器
513 金属製フィルタ
602 ターゲット領域
604 ターゲット領域
606 母材
612 電極
614 電極
616 電子ビーム
710 検出器アレー
712 高解像度検出器アレー
714 線状アレー
716 線状アレー
718 検出器
750 積分器
750a 積分器
750b 積分器
752 増幅器
754 コンデンサ
756 入力スイッチ
758 リセットスイッチ
759 リセットスイッチ
760 マルチプレクシングスイッチ
760a 出力スイッチ
760b 出力スイッチ
812 高解像度アレー
818 検出器
Claims (25)
- 複数のX線走査システムと、ワークステーションと、前記X線走査システムの各々を前記ワークステーションに接続するように構成された接続手段とを有するネットワーク検査システムであって、
前記X線走査システムの各々は、走査容積の周りに延在し、放射されるX線が前記走査容積を通過できるように配向された複数の点状放射源を構成するX線放射源と、同様に前記走査容積の周りに延在し、前記点状放射源からの前記走査容積を通過したX線を検出し、前記検出されたX線に基づく出力信号を生成するように構成されたX線検出器アレーと、複数の物品が前記走査容積を通過して運ばれるように構成されたコンベヤと、を有し、
さらに、
検出器の出力信号から複数の物品それぞれに対する画像データセットを生成するように構成された処理手段と、
各物品に対し画像データセットを解析し、複数の安全性区分から前記物品に予備的に割り当てられた安全性区分と対応する確率とを含む割り当てデータセットを生成するように構成された解析手段と、
各物品に対する前記画像データセットと、同じ物品に対する前記割り当てデータセットとを前記ワークステーションに送るように構成された切換手段と、
を備え、
前記ワークステーションは、前記画像を表示して、前記確率を示す表示を提供するように構成され、故に、前記画像及び前記表示はオペレータによって観察でき、前記オペレータは、前記ワークステーションで、前記画像、前記予備的な安全性区分及び対応する確率を再確認でき、前記予備的に割り当てた安全性区分を受け入れるか又は無視するかを判断することができることを特徴とするネットワーク検査システム。 - 前記処理手段は、前記走査容積の複数の部分におけるX線の減衰レベルを示す減衰データを前記検出器出力信号から生成するように構成されている請求項1に記載のネットワーク検査システム。
- 複数のX線走査システムのいずれもが、コンベヤに沿って移動するような各物品の複数の領域を走査するように構成され、前記減衰データは各前記領域の部分の減衰レベルを示すことを特徴とする請求項2に記載のネットワーク検査システム。
- 前記減衰データは走査された物品の画像を生成するのに適した画像データ形式であることを特徴とする請求項2に記載のネットワーク検査システム。
- 前記画像データ形式は3次元断層撮影画像を生成するのに適していることを特徴とする請求項4に記載のネットワーク検査システム。
- 少なくとも部分的には前記解析手段からの前記出力信号に基づき前記物品を仕分けするように構成された仕分け手段を更に有する請求項1に記載のネットワーク検査システム。
- 前記解析手段は使用者入力部から生成される使用者入力信号を受信し、少なくとも部分的には前記使用者入力信号に基づき前記物品を割り当てるように構成されていることを特徴とする請求項1に記載のネットワーク検査システム。
- 前記切換手段は、どの前記走査データのセットを前記ワークステーションに送るかを選択するように構成されていることを特徴とする請求項1に記載のネットワーク検査システム。
- 前記走査システムの各々は、走査データのセットを生成するように構成され、
さらに、複数のワークステーションを備え、
前記接続手段は、各前記走査システムを前記ワークステーションの各々に接続するように構成され、
前記切換手段は、どの前記ワークステーションが前記走査システムの各々からの各データセットを受信するかを選択するように構成されていることを特徴とする請求項1に記載のネットワーク検査システム。 - 前記仕分け手段は前記物品を搬入箇所で受け入れ、各前記区分の1つにそれぞれ対応する複数の搬出箇所の1つに各前記物品を転送するように構成されていることを特徴とする請求項6に記載のシステム。
- 画像を前記走査装置出力から生成するように構成された画像化手段と、使用者が使用者入力信号を発生させることができるように構成された使用者入力部を更に有し、前記解析手段は前記物品を少なくとも部分的には前記使用者入力信号に基づき割り当てるように構成されていることを特徴とする請求項6に記載のシステム。
- 前記解析手段は前記走査装置出力に基づく各物品の仮割り当てと、前記走査装置出力と前記使用者入力とに基づく各物品の最終割り当てとを生成するように構成されていることを特徴とする請求項11に記載のシステム。
- 各物品を前記走査装置から前記仕分け手段に運び、前記使用者が前記使用者入力信号を発生させることができる間、各物品の前記走査と仕分けの間に遅延時間を設けるように構成された搬送手段を更に有する請求項12に記載のシステム。
- 各前記区分は、これに対応するコンベヤを有し、前記システムは更に前記コンベヤの1つの上で物品を走査するように構成された予備走査装置と、前記予備走査装置が前記物品を適切な前記区分に割り当てるべきと判断した場合、物品を前記コンベヤの1つから他の前記コンベヤへ転送するように構成された更なる仕分け手段とを有することを特徴とする請求項6に記載のシステム。
- 前記解析手段は複数の走査装置を備え、前記仕分けシステムは更に、物品を複数の搬入コンベヤから受け入れるように構成された環状コンベヤと、物品を前記環状コンベヤから取り込み、前記物品を各前記走査装置の1つに転送するように構成された複数の仕分け装置とを備えることを特徴とする請求項6に記載のシステム。
- 複数のX線走査システムの1つは、対象物を走査して前記対象物の断層撮影X線画像を構成する走査データを生成するように構成された走査装置と、前記走査データを解析して前記画像データの少なくとも1つのパラメータを抽出して前記対象物を少なくとも1つの前記パラメータに基づいて複数の区分の1つに割り当てるように構成された処理手段とを有することを特徴とする請求項1記載のシステム。
- 前記走査データは散乱データを含むように構成されていることを特徴とする請求項16に記載のシステム。
- 前記走査データは投影画像を形成するように構成されていることを特徴とする請求項16に記載のシステム。
- 前記処理手段は前記画像の領域を識別し、前記領域の1つを解析することによって前記パラメータを識別するように構成されていることを特徴とする請求項16に記載のシステム。
- 前記処理手段は、前記画像の画素が領域に属するかどうかを、前記画素に対応する値を相当する前記領域に対応する値と比較することにより判定し、所定の関係が前記2つの値の間に成り立つ場合、前記領域の前記画素を含めるように構成されていることを特徴とする請求項19に記載のシステム。
- 前記パラメータから情報を得るように構成された決定木を更に有する請求項16に記載のシステム。
- 検出器の第1のアレーを形成する検出器アレーを有し、システムは、さらに検出器の第2のアレーを有し、前記処理手段は前記第1の検出器アレーからの信号を処理して走査された対象物の断層撮影画像データを生成し、前記第2の検出器アレーからの信号を処理して、走査された前記対象物の投影画像データを生成するように構成され、前記処理手段は走査された前記対象物の前記断層撮影画像データと前記投影画像データを処理して走査された前記対象物を複数の区分の1つに割り当てるように構成されていることを特徴とする請求項1記載のシステム。
- 各前記第2の検出器アレーはデータ収集手段に接続され、前記データ収集手段は前記第2の検出器アレーの各センサーから同時にデータを収集して前記投影画像データを生成するように構成されていることを特徴とする請求項22に記載のシステム。
- 前記データ収集手段は、2つの各点状放射源が動作している時、前記第2の検出器アレーの前記センサーからデータを収集して、2セットの投影画像データを生成するように構成されていることを特徴とする請求項23に記載のシステム。
- 前記処理手段は前記2セットの投影画像データを合成して3次元画像を生成するように構成されていることを特徴とする請求項24に記載のシステム。
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