JP2011053210A - 断層写真法画像における運動補正 - Google Patents
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Abstract
【解決手段】撮像方法(500)が、関心領域について同期放出断層写真法画像を再構成するステップ(504)と、この同期放出断層写真法画像と関心領域の計算機式断層写真法画像との間の不一致を調節するステップ(508)と、同期放出断層写真法画像を位置合わせするステップ(512)と、運動補正済み画像を形成するように位置合わせ済み同期放出断層写真法画像を結合するステップ(512)とを含んでいる。
【選択図】図4
Description
22 関心対象
100 PET−CTスキャナ
113 患者テーブル
114 テーブル寝台
115 制御ステーション
120 筐体
150 処理ユニット
200 CTシステム
204 X線ビーム
212 ガントリ
214 X線源
216 検出器アレイ
218 検出器素子
220 制御/インタフェイス・システム
222 制御部
224 データ取得システム
230 再構成エンジン
232 プロセッサ
234 メモリ
240 システム管理コンピュータ
242 CPU
244 メモリ
300 PETシステム
311 検出器環アセンブリ
318 構内網
320 検出器モジュール
325 取得回路の組
326 ケーブル
327 事象位置決め回路
329 取得CPU
330 データ取得プロセッサ
331 バックプレーン・バス
332 同時計数検出器
333 リンク
334 ソータ
335 動的ヒストグラム・メモリ
336 未処理データ・ディスク
337 アレイ・プロセッサ
342 CTACサーバ
345 付加的なプロセッサ
348 PETデータベース
350 記憶サブシステム
410 PET−CT画像プロセッサ
420 表示器
500 撮像方法
502 関心領域の指定
504 再構成ブロック
506 セグメント分割ブロック
508 不一致調節ブロック
510 減弱不一致ブロック
512 位置合わせ及び結合ブロック
514 表示ブロック
516 定量化ブロック
518 不一致調節工程の一実施形態
520 同期CT画像
522 同期PET画像
524 質量中心
526 同期PET画像の位置合わせ
528 運動補正済み画像
530 もう一つの実施形態
532 単一のCT画像
534 同期PET画像
535 不一致調節済み同期PET画像
536 同期PET画像の位置合わせ
538 運動補正済み画像
550 もう一つの実施形態
552 同期PET画像
554 同期PET画像の位置合わせ
556 減弱不一致補正及びPET画像整列
558 単一の(非同期)CT画像
560 運動補正済み画像
Claims (10)
- 関心領域について同期放出断層写真法画像を再構成するステップ(504)と、
前記同期放出断層写真法画像と前記関心領域の計算機式断層写真法画像との間の不一致を調節するステップ(508)と、
前記同期放出断層写真法画像を位置合わせするステップ(512)と、
運動補正済み画像を形成するように前記位置合わせ済み同期放出断層写真法画像を結合するステップ(512)と
を備えた撮像方法(500)。 - 不一致を調節する前記ステップ(508)は、前記計算機式断層写真法画像(532)と前記同期放出断層写真法画像(534)との間の前記関心領域の特徴(524)の前記不一致を調節するステップを含んでいる、請求項1に記載の方法(500)。
- 前記関心領域の特徴の前記不一致を調節する前記ステップ(508)は、前記同期放出断層写真法画像(534)の前記特徴の前記不一致を調節するステップを含んでいる、請求項2に記載の方法(500)。
- 前記特徴(524)は、質量中心を含む前記関心領域の位置を含んでいる、請求項2に記載の方法(500)。
- 前記同期放出断層写真法画像に減弱不一致補正を施すステップ(510)をさらに含んでいる請求項1に記載の方法。
- 前記計算機式断層写真法画像は、同期計算機式断層写真法画像(520)を含んでいる、請求項1に記載の方法(500)。
- 前記計算機式断層写真法画像及び前記同期放出断層写真法画像をセグメント分割するステップ(506)をさらに含んでいる請求項1に記載の方法(500)。
- 前記同期放出断層写真法画像を位置合わせした後に前記関心領域を表示するステップ(514)をさらに含んでいる請求項1に記載の方法(500)。
- 計算機式断層写真法−放出断層写真法融合画像を形成して表示するステップ(514)をさらに含んでいる請求項1に記載の方法(500)。
- 前記放出断層写真法画像は、陽電子放出断層写真法(PET)画像又は単光子放出計算機式断層写真法(SPECT)画像を含んでいる、請求項1に記載の方法(500)。
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US12/550,773 US8472683B2 (en) | 2008-05-09 | 2009-08-31 | Motion correction in tomographic images |
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