JP2001521404A - 多重超音波画像見当合わせシステム、その方法、及び、トランスジューサ - Google Patents
多重超音波画像見当合わせシステム、その方法、及び、トランスジューサInfo
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- G01S15/66—Sonar tracking systems
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- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/87—Combinations of sonar systems
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- G01—MEASURING; TESTING
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- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
- G01S7/52023—Details of receivers
- G01S7/52034—Data rate converters
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- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
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- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
- G01S7/52053—Display arrangements
- G01S7/52057—Cathode ray tube displays
- G01S7/52071—Multicolour displays; using colour coding; Optimising colour or information content in displays, e.g. parametric imaging
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Abstract
Description
Claims (1)
- 【特許請求の範囲】 1. 超音波トランスジューサにおいて、 支持エレメントと、 支持エレメントと共に動くように結合され、そして、方位軸に沿って配列さ れた複数の第1のトランスジューサエレメントを有する第1のトランスジュー サアレイとを有し、前記第1のトランスジューサアレイは方位軸に沿って間隔 を保つ第1及び第2の端部、及び、第1の中央画像平面を有し、 支持エレメントと共に動くように結合され、そして、複数の第2のトランス ジューサエレメントを有する第2のトランスジューサアレイを有し、前記のト ランスジューサアレイは第1のトランスジューサアレイの第1の端部の近くに 配置され、そして、第2の中央画像平面を有し、 支持エレメントと共に動くように結合され、そして、複数の第3のトランス ジューサエレメントを有する第3のトランスジューサアレイを有し、前記第3 のトランスジューサアレイは第1のトランスジューサアレイの第2の端部の近 くに配置され、そして、第3の中央画像平面を有し、 前記第1と第2の中央画像平面は非平行であり、前記第1と第3の中央画像 平面は非平行であることを特徴とするトランスジューサ。 2. 請求項1記載の発明において、ここに、第1と第2の中央画像平面が実質的 に直交し、ここに、第1と第3の中央画像平面が実質的に直交することを特徴 とする発明。 3. 請求項1記載の発明において、ここに、第2と第3のトランスジューサアレ イが、それぞれの軸に沿った長さにおいて、第1のトランスジューサアレイの 場合よりも実質的に短いことを特徴とする発明。 4. 請求項1記載の発明において、ここに、第2と第3のトランスジューサアレ イがそれぞれ、第1のトランスジューサアレイの場合よりも実質的に少ない個 数のそれぞれのトランスジューサエレメントを有することを特徴とする発明。 5. 請求項1記載の発明において、ここに、第1と第2と第3のトランスジュー サエレメントが、それぞれのピッチを以て間隔を保ち、ここに、第2のトラン スジューサエレメントのピッチが第1のトランスジューサエレメントのピッチ の第1の整数倍であることを特徴とする発明。 6. 請求項5記載の発明において、ここに、第3のトランスジューサエレメント のピッチが第1のトランスジューサエレメントのピッチの第2の整数倍である ことを特徴とする発明。 7. 請求項8記載の発明において、ここに、第1の整数倍数が第2の整数倍数に 等しいことを特徴とする発明。 8. 請求項1記載の発明において、更に、送信ビーム形成器と、第1と第2と第 3のトランスジューサアレイに結合された受信ビーム形成器とを有することを 特徴とする発明。 9. 請求項8記載の発明において、ここに、送信ビーム形成器が多重同時送信ビ ームを形成することを特徴とする発明。 10.請求項8記載の発明において、ここに、受信ビーム形成器が多重同時受信ビ ームを形成することを特徴とする発明。 11.請求項8記載の発明において、ここに、送信ビーム形成器が第1と第2のト ランスジューサアレイを異なる超音波周波数において作動させることを特徴と する発明。 12.請求項8記載の発明において、ここに、送信ビーム形成器が第1と第2と第 3のトランスジューサアレイを共通超音波周波数において作動させることを特 徴とする発明。 13.請求項8記載の発明において、ここに、送信ビーム形成器が、第1のトラン スジューサアレイの場合よりも少ない本数の走査線を以て第2と第3のトラン スジューサアレイを作動させることを特徴とする発明。 14.請求項8記載の発明において、ここに、送信および受信ビーム形成器が第1 と第2と第3のトランスジューサアレイからディスプレイ用の同時発生画像を 獲得することを特徴とする発明。 15.請求項8記載の発明において、ここに、第1のトランスジューサアレイから の隣接フレームの間において第2と第3のトランスジューサアレイの少なくと も1つから複数のフレームを獲得するために送信ビーム形成器が第2と第3の トランスジューサアレイを作動させることを特徴とする発明。 16.請求項8記載の発明において、ここに、第2のトランスジューサアレイから の隣接フレームの間において第1のトランスジューサアレイから複数のフレー ムを獲得するために送信ビーム形成器が第1のトランスジューサアレイを作動 させることを特徴とする発明。 17.請求項14記載の発明において、更に、第1と第2と第3のトランスジュー サアレイからの同時発生画像をディスプレイするようにビーム形成器へ結合さ れたディスプレイシステムを有することを特徴とする発明。 18.請求項1記載の発明において、更に、変位と位置決めのうちの少なくとも1 つに関する絶対センサを有し、前記の絶対センサが支持エレメントと共に動く ように結合されることを特徴とする発明。 19.請求項18記載の発明において、ここに、絶対的センサが磁気センサを有す ることを特徴とする発明。 20.請求項1記載の発明において、ここに、第2のトランスジューサエレメント の少なくとも一部分が第1のトランスジューサエレメントの少なくとも一部分 と並列に接続され、ここに、第2のトランスジューサエレメントの一部分が第 1のトランスジューサエレメントの一部分に対して無秩序であることを特徴と する発明。 21.請求項1記載の発明において、ここに、第1と第2と第3のトランスジュー サアレイのなかの少なくとも2つがクロスアレイを形成することを特徴とする 発明。 22.請求項1記載の発明において、ここに、第2と第3のトランスジューサアレ イが第1のトランスジューサアレイに対してその横側にこれと横方向に間隔を 保って配置されることを特徴とする発明。 23.請求項1記載の発明において、更に、支持エレメントと共に動くように結合 され、そして、第1のトランスジューサアレイのそれぞれの端部に近接して配 置された第3と第4のトランスジューサアレイを有し、前記の第3と第4のト ランスジューサアレイが第1の画像平面に対して非平行に位置決めされたそれ ぞれ第4と第5の画像平面を有することを特徴とする発明。 24.目標から獲得された超音波画像情報を見当合わせするための方法において、 (a)少なくとも1つの超音波トランスジューサアレイを用いて画像情報の 複数の集合を獲得する過程を有し、少なくとも幾つかの画像情報の集合の間に おいて前記の少なくとも1つのアレイが動かされ、前記の複数の集合が複数の 画像データ集合と複数の追跡集合とを有し、 (b)過程(a)において獲得された追跡集合の少なくとも一部分の比較に 基づく運動成分を自動的に決定する過程と、 (c)過程(a)において獲得された画像データ集合のうちの選定された幾 つかを見当合わせするために過程(b)において決定された運動成分を自動的 に使用する過程とを有することを特徴とする方法。 25.請求項24記載の発明において、ここに、少なくとも1つの超音波トランス ジューサアレイが映像アレイと少なくとも1つの追跡アレイを有し、ここに、 映像アレイが画像平面を定義し、ここに、追跡アレイが追跡平面を定義し、こ こに、画像平面が追跡平面に対して非ゼロ角度に位置決めされることを特徴と する発明。 26.請求項24記載の発明において、ここに、画像情報の集合が相互に実質的に 平行に位置決めされ、ここに、過程(c)が拡張された視界を形成することを 特徴とする発明。 27.請求項24記載の発明において、ここに、少なくとも幾つかの追跡集合が少 なくとも幾つかの画像データ集合と交差しないことを特徴とする発明。 28.請求項24記載の発明において、ここに、過程(b)が前記追跡集合の少な くとも一部分と相互相関する過程を有することを特徴とする発明。 29.請求項25記載の方法において、ここに、少なくとも1つの追跡アレイが第 1と第2の追跡アレイを有し、それぞれがそれぞれの第1と第2の追跡平面に おいて追跡集合を獲得するために映像アレイのそれぞれの端部に隣接して配置 され、ここに、過程(b)が前記の第1と第2の両追跡平面における運動成分 を決定することを特徴とする方法。 30.請求項24記載の方法において、ここに、画像データ集合がBモード情報と カラードップラー速度情報とカラードップラーエネルギ情報とこれらの組合わ せとによって構成されるグループから選定された情報を有することを特徴とす る方法。 31.請求項24記載の方法において、更に、少なくとも幾つかの選定された画像 データ集合の比較に基づく第2の運動成分を決定する過程を有し、ここに、過 程(c)が前記の画像データ集合を見当合わせするために第2の運動成分を有 することを特徴とする方法。 32.請求項24記載の方法において、ここに、追跡集合を獲得する際に用いられ た周波数と異なる周波数を用いて画像データ集合が獲得されることを特徴とす る方法。 33.請求項24記載の方法において、ここに、画像データ集合と追跡集合とを同 時に獲得するために過程(a)が二重ビーム形成器を使用する過程を有するこ とを特徴とする方法。 34.請求項33記載の方法において、ここに、過程(a)がそれぞれのビーム形 成器と関連してそれぞれのバンドパス濾波を使用する過程を有することを特徴 とする方法。 35.請求項24記載の方法において、ここに、過程(a)が追跡集合を走査変換 されたデータとして提供することを特徴とする方法。 36.請求項24記載の方法において、ここに、過程(a)が走査変換以前に追跡 集合を音波ラインデータとして提供することを特徴とする方法。 37.請求項24記載の方法において、ここに、過程(b)が追跡集合の全てのN 番目毎の画素を用いて比較を実施し、ここに、Nはゼロより大きい整数である ことを特徴とする方法。 38.請求項24記載の方法において、ここに、過程(b)が運動成分の複数の測 定値を組み合わせる過程を有することを特徴とする方法。 39.請求項38記載の方法において、組み合わせる過程が運動成分の個別測定値 に重みを割り当てる過程を有し、各重みがそれぞれの測度の品質を表すことを 特徴とする方法。 40.請求項39記載の方法において、ここに、重みを割り当てる過程が運動成分 の空間的に隣接する測定値を比較する過程を有することを特徴とする方法。 41.請求項39記載の方法において、ここに、重みを割り当てる過程が運動成分 の連続した測定値を比較する過程を有することを特徴とする方法。 42.請求項39記載の方法において、重みを割り当てる過程がファジー理論を用 いることを特徴とする方法。 43.請求項38記載の方法において、ここに、組み合わせる過程が運動成分の低 質測定値を放棄する過程を有することを特徴とする方法。 44.請求項24記載の方法において、更に、 (d)過程(b)において決定された運動成分が好ましい値の範囲の外側に 在る場合をオペレータに指示する過程を有することを特徴とする方法。 45.請求項24記載の方法において、更に、 (d)過程(b)を決定する過程が効果的に作動していない場合をオペレー タに警告する過程を有することを特徴とする方法。 46.請求項25記載の方法において、ここに、過程(a)が映像アレイと追跡ア レイとを並列作動させる過程を有することを特徴とする方法。 47.請求項46記載の方法において、ここに、過程(a)が映像アレイと追跡ア レイとを異なる電圧レベルにおいて作動させる過程を有することを特徴とする 方法。 48.請求項24記載の方法において、更に、 (d)過程(b)において決定された運動成分の複数の測定値の間を補間す る過程を有することを特徴とする方法。 49.請求項24記載の方法において、ここに、画像情報の集合が過程(a)にお いて複数の個別周波数を用いて獲得されることを特徴とする方法。 50.請求項24記載の方法において、ここに、画像情報の集合が過程(a)にお いて複数の異なる帯域幅を用いて獲得されることを特徴とする方法。 51.請求項24記載の方法において、ここに、追跡集合が複数の異なる超音波周 波数を用いて獲得される集合を有することを特徴とする方法。 52.請求項24記載の方法において、ここに、追跡集合が複数の異なる超音波帯 域幅を用いて獲得される集合を有することを特徴とする方法。 53.請求項24記載の方法において、ここに、過程(b)が運動成分の複数の測 定値から導出される曲線適合値を生成する過程を有することを特徴とする方法 。 54.請求項24記載の方法において、ここに、過程(b)が運動成分を選定済み 範囲に近付ける運動成分を決定する際に用いられる追跡集合を獲得する時限の 間の時間を適応的に変える過程を有することを特徴とする方法。 55.請求項24記載の発明において、ここに、過程(b)が運動成分を決定する 以前に追跡集合の少なくとも1つの集合の複数の画素を平均する過程を有する ことを特徴とする発明。 56.請求項24記載の方法において、更に、過程(a)において獲得された追跡 集合の強度マッピングを運動検出を強化するために自動的に変える過程を有す ることを特徴とする方法。 57.請求項24記載の発明において、更に、 (d)過程(b)の比較以前に画像情報の追跡集合の少なくとも前記の部分 を濾波する過程を有する発明。 58.請求項24記載の方法において、ここに、画像情報の前記第1の追跡集合に 関して運動成分が決定されるまで過程(b)が画像情報の追跡集合の第1の1 つを過程(b)の比較の複数の連続する幾つかにおける基準として繰り返して 使用する過程を有することを特徴とする方法。 59.請求項24記載の方法において、ここに、過程(b)が画像情報の追跡集合 の探索領域全体に亙って比較を実施する過程を有し、ここに、探索領域の形状 が運動成分と実質的に直線配置される方向において延長されることを特徴とす る方法。 60.請求項24記載の方法において、ここに、過程(b)が追跡集合の可変探索 領域全体に亙り比較を実施する過程を有することを特徴とする方法。 61.請求項60記載の方法において、ここに、過程(b)が以前に決定済みの運 動成分に基づき可変探索領域を位置決めする過程を有することを特徴とする方 法。 62.請求項60記載の方法において、ここに、過程(b)が以前に決定済みの複 数の運動成分の可変性に基づき可変探索領域のサイズを決定する過程を有する ことを特徴とする方法。 63.請求項24記載の方法において、ここに、過程(b)が一連の追跡集合の比 較を実施する過程を有し、ここに、比較が空間的および信号水準解像度の少な くとも1つにおける解像度の差異に関することを特徴とする方法。 64.請求項24記載の方法において、ここに、過程(b)が運動成分のベクトル 成分を決定するために過程(a)において獲得された画像情報の2つの追跡集 合に含まれる画像情報の2つの非平行線を相互関係付ける過程を有する過程を 有し、前記のベクトル成分が前記の線と直線配置されることを特徴とする方法 。 65.請求項24記載の方法において、更に、 (d)過程(b)及び(c)の少なくとも1つよりも以前に過程(a)にお いて獲得された画像データ集合と追跡セット集合の少なくとも幾つかのデータ 圧縮されたバージョンを形成する過程を有することを特徴とする方法。 66.請求項65記載の方法において、更に、 (e)過程(b)及び(c)の少なくとも1つよりも以前に過程(d)のデ ータ圧縮されたバージョンにデータ圧縮解除を適用する過程を有することを特 徴とする方法。 67.請求項25記載の方法において、更に、画像平面に対して傾斜して位置決め された平面内に2D画像を形成するために見当合わせ済み画像データ集合を用 いる過程(d)を有することを特徴とする方法。 68.請求項24記載の方法において、ここに、過程(b)が比較に際して1つの ECGサイクルと1つの呼吸サイクルから成るグループから選定されたサイク ルの選定済み部分に対応する追跡集合のみを利用する過程を有することを特徴 とする方法。 69.請求項24記載の方法において、ここに、過程(b)の比較に際して用いら れる追跡集合の情報が、走査変換、エンベロープ検波以前のRFビーム形成器 信号、及び、エンベロープ検波以前のベースバンドビーム形成器信号以前にお いてエンベロープ検出されたデータによって構成されるグループの中から選択 されることを特徴とする方法。 70.請求項24記載の方法において、ここに、画像データ集合が追跡集合を獲得 する際に用いられる周波数と異なる周波数を用いて獲得されることを特徴とす る方法。 71.請求項24記載の方法において、ここに、画像データ集合が追跡集合を獲得 する際に用いられる帯域幅と異なる帯域幅を用いて獲得されることを特徴とす る方法。 72.請求項24記載の方法において、ここに、画像データ集合が追跡集合を獲得 する際に用いられる方位焦点と異なる方位焦点を用いて獲得されることを特徴 とする方法。 73.請求項24記載の方法において、ここに、過程(a)が、更に、追跡集合の 場合と異なる画像データ集合用信号レベルの対数圧縮を用いる過程を有するこ とを特徴とする 74.請求項26記載の方法において、ここに、少なくとも1つのトランスジュー サアレイが第1のトランスジューサアレイと少なくとも1つの付加トランスジ ューサアレイを有し、ここに、画像データ集合が第1のトランスジューサアレ イを用いて獲得され、ここに、追跡集合が少なくとも1つの付加トランスジュ ーサアレイを用いて獲得されることを特徴とする方法。 75.請求項74記載の方法において、ここに、第1および少なくとも1つの付加 トランスジューサアレイが相互にコリニア的及び軸方向に相互に間隔を保って 位置することを特徴とする方法。 76.請求項74記載の方法において、ここに、第1及び少なくとも1つの付加ト ランスジューサアレイが相互に並びかつ横方向に相互に間隔を保って位置決め されることを特徴とする方法。 77.請求項24記載の方法において、ここに、過程(a)が運動検出を強化する ために追跡集合の強度マッピングを自動的に変える過程を有することを特徴と する方法。 78.請求項24記載の方法において、ここに、画像データ集合及び追跡集合が異 なるトランスジューサアレイを用いて獲得されることを特徴とする方法。 79.請求項78記載の方法において、ここに、獲得過程が1組の共通信号導体を 経て異なるトランスジューサアレイへ供給される信号を多重化する過程を有す ることを特徴とする方法。 80.請求項24記載の方法において、ここに、画像データ及び追跡集合がそれぞ れ複数の走査線を有し、ここに、画像データ集合の1つ又は複数の走査線の集 合が追跡集合の1つ又は複数の走査線の集合を用いて時間的にインタリーブさ れることを特徴とする方法。 81.請求項24記載の方法において、ここに、過程(a)が少なくとも1つのト ランスジューサアレイを用いて多重同時送信ビームを形成する過程を有するこ とを特徴とする方法。 82.請求項24記載の方法において、ここに、過程(a)が少なくとも1つのト ランスジューサアレイを用いて多重同時受信ビームを形成する過程を有するこ とを特徴とする方法。 83.請求項24記載の方法において、ここに、過程(a)が少なくとも追跡集合 をコヒーレントに形成する過程を有することを特徴とする方法。 84.請求項24記載の方法において、更に、少なくとも1つのトランスジューサ アレイに含まれるトランスジューサアレイに関して組織接触が失われたことを オペレータに指示する過程(d)を有することを特徴とする方法。 85.請求項24記載の方法において、ここに、画像データ集合の選定された幾つ かが連続的に獲得された画像フレームを有することを特徴とする方法。 86.請求項24記載の方法において、ここに、画像データ集合の選定された幾つ かが少なくとも1つの介在画像フレームによって時間的に分離された非連続的 に獲得済みの画像フレームを有することを特徴とする方法。 87.請求項24記載の方法において、ここに、過程(c)が選定された画像デー タ集合の間の境界における画像データ集合の間において平滑に補間する過程を 有することを特徴とする方法。
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US6102865A (en) | 2000-08-15 |
JP4237256B2 (ja) | 2009-03-11 |
EP0883860B1 (en) | 2006-08-23 |
WO1997032277A1 (en) | 1997-09-04 |
DE69736549T2 (de) | 2007-08-23 |
US6014473A (en) | 2000-01-11 |
EP0883860A1 (en) | 1998-12-16 |
AU1983397A (en) | 1997-09-16 |
US6201900B1 (en) | 2001-03-13 |
DE69736549D1 (de) | 2006-10-05 |
EP0883860A4 (en) | 2002-03-06 |
US6132376A (en) | 2000-10-17 |
US6360027B1 (en) | 2002-03-19 |
US6222948B1 (en) | 2001-04-24 |
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