JP2016034351A - X線診断装置 - Google Patents
X線診断装置 Download PDFInfo
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- JP2016034351A JP2016034351A JP2014158093A JP2014158093A JP2016034351A JP 2016034351 A JP2016034351 A JP 2016034351A JP 2014158093 A JP2014158093 A JP 2014158093A JP 2014158093 A JP2014158093 A JP 2014158093A JP 2016034351 A JP2016034351 A JP 2016034351A
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Abstract
Description
まず、第1の実施形態に係るX線診断装置の全体構成について説明する。図1は、第1の実施形態に係るX線診断装置100の構成の一例を示す図である。図1に示すように、第1の実施形態に係るX線診断装置100は、高電圧発生器11と、X線管12と、X線絞り装置13と、天板14と、Cアーム15と、X線検出器16と、Cアーム回転・移動機構17と、天板移動機構18と、Cアーム・天板機構制御部19と、絞り制御部20と、システム制御部21と、入力部22と、表示部23と、画像データ生成部24と、画像データ記憶部25と、画像処理部26とを有する。
上述した第1の実施形態では、先に実行したLearningモードの結果を用いて以後のTrackingモードを実行する場合について説明した。第2の実施形態では、手技中にLearningモードを継続して実行する場合について説明する。なお、第2の実施形態は、第1の実施形態と比較して、検出制御部21aによる制御内容が異なる。以下、これを中心に説明する。なお、以下では、所定の対象物としてステントマーカーを例に挙げて説明する。
上述した第2の実施形態では、Learningモードを常時実施しておき、手技条件が変更された場合に、新たなLearningモードの処理結果に基づいて検出された所定の対象物(ステントマーカー)の位置を一致させるTrackingモードを実行する場合について説明した。第3の実施形態では、手技条件の変更に応じて所定の対象物の検出処理を修正することで、Trackingモードを成功させる場合について説明する。なお、第3の実施形態に係るX線診断装置100は、第1の実施形態と比較して、検出制御部21aによる制御内容が異なる。以下、これを中心に説明する。なお、以下では、所定の対象物としてステントマーカーを例に挙げて説明する。
上述した実施形態では、単一のステントが用いられる場合について説明した。しかしながら、血管内インターベンション治療においては、複数のステントが同時に挿入される場合がある。例えば、2つのステントが挿入されている場合、第4の実施形態に係るX線診断装置100において、システム制御部21は、これら2つのステント同士の距離に基づいて、以下に説明する制御を行なう。なお、ステント同士の距離は、第1フレーム(原画像)を参照する操作者(医師)によって入力部22を介して指定された座標を用いてマーカー座標検出部26aが算出する場合であってもよいし、マーカー座標検出部26aが教師画像を用いて第1フレーム内で検出したステントマーカーの座標を用いて算出する場合であってもよい。
上述した実施形態では、新規画像ごとにステントマーカーの座標を検出して補正画像を生成する場合について説明した。第5の実施形態では、新規画像におけるステントマーカーの座標を検出せずに補正画像を生成する場合について説明する。図20は、第5の実施形態に係る画像処理部26の構成の一例を示す図である。第5の実施形態に係る画像処理部26は、図3に示した画像処理部26と比較して、心電情報取得部26f、周期的軌跡データ取得部26dおよび周期的軌跡データ記憶部26eを新たに備える点が異なる。以下、これを中心に説明する。
第6の実施形態では、上述した各実施形態のX線診断装置100の機能を併用する場合について、図26および図27を用いて説明する。なお、図26および図27は、第6の実施形態に係るX線診断装置100を説明するための図である。第6の実施形態に係るX線診断装置100は、上述した実施形態で説明した『マーカー座標検出部26aによって検出された新規画像におけるステントマーカーの座標を用いて補正画像の生成処理を実行する「リアルタイムマーカー座標検出使用モード」』と、『周期的軌跡データを用いて補正画像の生成処理を実行する「周期的軌跡データ使用モード」』とのいずれかのモードを実行する指示を、操作者から入力部22を介して受け付ける。
26 画像処理部
21a 検出制御部
21b 表示制御部
26a マーカー座標検出部
26b 補正画像生成部
Claims (6)
- X線管から照射され被検体を透過したX線に基づいて、X線画像を順次生成する画像生成部と、
所定の期間に前記画像生成部によって順次生成されたX線画像群を用いて、前記被検体の体内に挿入された医療デバイスに関する所定の対象物を特定し、特定結果に基づいて新たに生成されたX線画像における前記所定の対象物の位置を検出する検出部と、
所定のX線画像である基準画像において検出された前記所定の対象物の位置を基準位置とし、新たに生成されたX線画像において検出された前記所定の対象物の位置を前記基準位置と一致させる補正処理を前記新たに生成されたX線画像に施した補正画像を順次生成する補正画像生成部と、
前記被検体に対する手技に応じて前記検出部による前記所定の対象物の特定処理を制御する制御部と、
前記補正画像生成部が順次生成する補正画像を表示部に動画表示させる表示制御部と、
を備えたことを特徴とするX線診断装置。 - 前記制御部は、前記画像生成部によって順次生成されるX線画像群が複数生成される場合に、前記被検体に対する手技の条件が同一であることを条件に、時系列的に先に生成されるX線画像群を用いた前記所定の対象物の特定結果に基づいて、後に生成されるX線画像群に対する前記所定の対象物の検出処理を実行するように制御することを特徴とする請求項1記載のX線診断装置。
- 前記制御部は、前記X線画像を保存するための撮影によりX線画像群が生成される場合に、直前の透視により生成されるX線画像群を用いた前記所定の対象物の特定結果に基づいて、前記撮影により生成されるX線画像群に対する前記所定の対象物の検出処理を実行するように制御することを特徴とする請求項2記載のX線診断装置。
- 前記制御部は、前記画像生成部によって前記X線画像が生成される間、前記検出部による前記所定の対象物の特定処理を継続して実行するように制御し、前記補正画像生成部による前記補正画像の生成が失敗した場合に、継続して実行させた特定処理の特定結果に基づいて新たに生成されたX線画像に含まれる前記所定の対象物の位置を検出するように制御することを特徴とする請求項1〜3のいずれか一項に記載のX線診断装置。
- 前記制御部は、前記被検体に対する手技の条件が変更された場合に、前記特定結果を前記条件の変更内容に応じて変更し、変更後の特定結果に基づいて新たに生成されたX線画像に含まれる前記所定の対象物の位置を検出するように制御することを特徴とする請求項1〜4のいずれか一項に記載のX線診断装置。
- 前記表示制御部は、前記検出部による特定処理、前記補正画像生成部による補正画像の生成処理、及び、前記補正画像の生成処理の成否のうち、少なくとも一つについて前記表示部に表示させるように制御することを特徴とする請求項1〜5のいずれか一項に記載のX線診断装置。
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