JP2006314643A - 臓器動態の定量化方法、装置、臓器位置の予測方法、装置、放射線照射方法、装置及び臓器異常検出装置 - Google Patents
臓器動態の定量化方法、装置、臓器位置の予測方法、装置、放射線照射方法、装置及び臓器異常検出装置 Download PDFInfo
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Abstract
【解決手段】微小に変動・変形した臓器(10)の複数のCT画像を入力データとし、臓器内に分布した血管や気管12を抽出して細線化し、細線化した画像14を用いて分岐点16や連結点の座標を抽出し、これらを特徴点として複数のCT画像間の個々の点の移動を3次元空間中で追跡することにより、臓器(10)の連動を計測する。
【選択図】図1
Description
12…血管や気管
14…細線化画像
16…分岐点
18…変位ベクトル
20…肺領域抽出手段
22…細線化手段
24…分岐点抽出手段
26…特徴点追跡手段
30…患者
32…CTガントリ
36…X線管球
38…X線検出器
40…4次元CT(4D−CT)
50…呼吸センサ
52…運動情報取得手段
60…処理部
70…放射線治療装置
74…照射制御装置
76…放射線照射装置
Claims (11)
- 微少に変動・変形した臓器の複数のCT画像を入力データとし、
臓器内に分布した血管や気管を抽出して細線化し、
細線化した画像を用いて分岐点や連結点の座標を抽出し、
これらを特徴点として複数のCT画像間の個々の点の移動を3次元空間中で追跡することにより、臓器の運動を計測することを特徴とする臓器動態の定量化方法。 - 前記特徴点の追跡を、複数のCT画像及び特徴点座標を用いたポイントパターンマッチングにより行うことを特徴とする請求項1に記載の臓器動態の定量化方法。
- 複数の特徴点の運動を補間して、任意点の運動を求めることを特徴とする請求項1又は2に記載の臓器動態の定量化方法。
- 請求項1乃至3のいずれかに記載の方法により得られた動的な情報と、臓器の周期的な運動の情報との相関を取ることにより、臓器の位置を予測することを特徴とする臓器位置の予測方法。
- 請求項4に記載の方法により予測された臓器の位置に、放射線を照射することを特徴とする放射線照射方法。
- 微少に変動・変形した臓器の複数のCT画像を入力する手段と、
臓器内に分布した血管や気管を抽出して細線化する手段と、
細線化した画像を用いて分岐点や連結点の座標を抽出する手段と、
これらを特徴点として複数のCT画像間の個々の点の移動を3次元空間中で追跡することにより、臓器の運動を計測する手段と、
を備えたことを特徴とする臓器動態の定量化装置。 - 前記特徴点の追跡を、複数のCT画像及び特徴点座標を用いたポイントパターンマッチングにより行う手段を備えたことを特徴とする請求項6に記載の臓器動態の定量化装置。
- 複数の特徴点の運動を補間して、任意点の運動を求める手段を備えたことを特徴とする請求項6又は7に記載の臓器動態の定量化装置。
- 請求項6乃至8のいずれかに記載の装置により得られた動的な情報と、臓器の周期的な運動の情報との相関を取ることにより、臓器の位置を予測する手段を備えたことを特徴とする臓器位置の予測装置。
- 請求項9に記載の装置により予測された臓器の位置に、放射線を照射する手段を備えたことを特徴とする放射線照射装置。
- 請求項6乃至8のいずれかに記載の装置により得られた動的な情報に基づいて、臓器の局所的に異常な変形を捉える手段を備えたことを特徴とする臓器異常検出装置。
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JP2005141880A JP3932303B2 (ja) | 2005-05-13 | 2005-05-13 | 臓器動態の定量化方法、装置、臓器位置の予測方法、装置、放射線照射方法、装置及び臓器異常検出装置 |
PCT/JP2006/309593 WO2006121164A1 (ja) | 2005-05-13 | 2006-05-12 | 臓器動態の定量化方法、装置、臓器位置の予測方法、装置、放射線照射方法、装置及び臓器異常検出装置 |
EP06732574.6A EP1880673B1 (en) | 2005-05-13 | 2006-05-12 | Method of quantifying organ dynamic behavior, device, method of predicting organ position, device, radiation irradiating method, device and organ abnormality detecting device |
US11/920,254 US8457379B2 (en) | 2005-05-13 | 2006-05-12 | Method for quantifying organ motion, apparatus therefor, method for estimating organ position, apparatus therefor, method for irradiating radiation, apparatus therefor, and apparatus for detecting abnormal organ |
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JP2005141880A JP3932303B2 (ja) | 2005-05-13 | 2005-05-13 | 臓器動態の定量化方法、装置、臓器位置の予測方法、装置、放射線照射方法、装置及び臓器異常検出装置 |
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- 2006-05-12 US US11/920,254 patent/US8457379B2/en not_active Expired - Fee Related
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2007117108A (ja) * | 2005-10-24 | 2007-05-17 | Med Solution Kk | 器官の状態変化を評価する装置およびプログラム |
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EP1880673A4 (en) | 2010-05-12 |
JP3932303B2 (ja) | 2007-06-20 |
US8457379B2 (en) | 2013-06-04 |
EP1880673A1 (en) | 2008-01-23 |
EP1880673B1 (en) | 2013-11-20 |
WO2006121164A1 (ja) | 2006-11-16 |
US20090022379A1 (en) | 2009-01-22 |
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