JP2005028121A - 呼吸気ct画像による換気分布計測方法 - Google Patents
呼吸気ct画像による換気分布計測方法 Download PDFInfo
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Abstract
【解決手段】3次元的に撮像された肺の吸気時CT画像1および呼気時CT画像2より肺領域を抽出する。非剛体レジストレーション手法を用いて、吸気時CT画像1と呼気時CT画像2との間で、肺領域の位置合せを行なう。この位置合せにより肺領域における変位ベクトル場を求め、求められた変位ベクトル場の各点において発散を計算する。計算された発散により肺の局所換気量を求め、発散を肺領域内において体積積分することにより肺の総換気量を求める。
【選択図】 図1
Description
2 呼気時CT画像
3 平面画像
4 立体画像
5 容積減少部
6 容積変化が無い部分
7 容積増加部
Claims (5)
- 3次元的に撮像された肺の呼気時のCT画像および吸気時のCT画像より肺領域を抽出し、
非剛体レジストレーション手法を用いて前記呼気時のCT画像と前記吸気時のCT画像との間で、前記肺領域の位置合せを行ない、
該位置合せにより前記肺領域における変位ベクトル場を求め、
求められた前記変位ベクトル場の各点において発散を計算し、
計算された前記各点における前記発散に基づき前記肺の局所換気量を求めることを特徴とする呼吸気CT画像による換気分布計測方法。 - 前記局所換気量に基づき、前記肺の換気分布状態を求めることを特徴とする請求項1記載の呼吸気CT画像による換気分布計測方法。
- 前記発散の体積積分により前記肺の総換気量を求めることを特徴とする請求項1または2記載の呼吸気CT画像による換気分布計測方法。
- 前記非剛体レジストレーション手法が、前記位置合せをボクセルベースで行なって、前記変位ベクトル場を求めるボクセルベース非剛体レジストレーション手法であることを特徴とする請求項1〜3までのいずれか1項記載の呼吸気CT画像による換気分布計測方法。
- 前記ボクセルベース非剛体レジストレーション手法において用いられる評価関数は、前記変位ベクトル場の前記発散を記述する発散項を含み、該発散項は、肺実質のボクセルに対応するものに対しては負の所定の重みが与えられ、肺胸膜、血管のボクセルに対応するものには正の所定の重みが与えられることを特徴とする請求項4記載の呼吸気CT画像による換気分布計測方法。
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Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007111207A1 (ja) * | 2006-03-16 | 2007-10-04 | Osaka University | 3次元スパイログラム計測方法及びコンピュータプログラム |
| JP2008520267A (ja) * | 2004-11-17 | 2008-06-19 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 改良された弾性画像レジストレーション機能 |
| JP2008259696A (ja) * | 2007-04-12 | 2008-10-30 | Fujifilm Corp | 三次元画像処理装置および方法並びにプログラム |
| WO2009078297A1 (ja) * | 2007-12-19 | 2009-06-25 | Konica Minolta Medical & Graphic, Inc. | 動態画像処理システム |
| JP2010110352A (ja) * | 2008-11-04 | 2010-05-20 | Rigaku Corp | 領域特定方法、これを用いた容積計測方法、領域特定装置および領域特定プログラム |
| WO2010086776A1 (en) | 2009-01-30 | 2010-08-05 | Koninklijke Philips Electronics N.V. | System for providing lung ventilation information |
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| EP2375378A1 (en) | 2010-03-31 | 2011-10-12 | Fujifilm Corporation | Medical image diagnosis assisting apparatus and method, and computer readable recording medium on which is recorded program for the same |
| WO2013140749A1 (ja) | 2012-03-23 | 2013-09-26 | 富士フイルム株式会社 | 画像解析装置および方法並びにプログラム |
| JP2014210171A (ja) * | 2013-04-05 | 2014-11-13 | 東芝メディカルシステムズ株式会社 | 医用画像処理装置及び医用画像処理方法 |
| JP2015006303A (ja) * | 2013-05-30 | 2015-01-15 | 株式会社東芝 | 医用画像処理装置 |
| WO2015175746A1 (en) * | 2014-05-15 | 2015-11-19 | Vida Diagnostics, Inc. | Visualization and quantification of lung disease utilizing image registration |
| JP2016508398A (ja) * | 2013-02-14 | 2016-03-22 | フル−イドディーエー レスピ | 機能的呼吸イメージングに基づいて呼吸疾患を決定する方法 |
| CN106415659A (zh) * | 2014-05-19 | 2017-02-15 | 皇家飞利浦有限公司 | 对比增强图像数据中的感兴趣组织的可视化 |
| JP2017124325A (ja) * | 2008-01-15 | 2017-07-20 | コニカミノルタ株式会社 | 動態画像解析装置 |
| JP2017225701A (ja) * | 2016-06-23 | 2017-12-28 | コニカミノルタ株式会社 | 動態解析システム |
| JP2018043068A (ja) * | 2017-12-21 | 2018-03-22 | コニカミノルタ株式会社 | 動態画像解析装置 |
| JP2018192047A (ja) * | 2017-05-18 | 2018-12-06 | Psp株式会社 | 医用画像診断支援システム及び装置、並びに、プログラム |
| US10165964B2 (en) | 2015-05-08 | 2019-01-01 | Vida Diagnostics, Inc. | Systems and methods for quantifying regional fissure features |
| JP2019528116A (ja) * | 2016-08-18 | 2019-10-10 | ウィリアム・ボーモント・ホスピタルWilliam Beaumont Hospital | 4dコンピュータ断層撮影から呼吸性血液量変化を決定するシステム及び方法 |
| US11051715B2 (en) | 2016-02-15 | 2021-07-06 | Samsung Electronics Co., Ltd. | Image processing apparatus, image processing method, and recording medium recording same |
| JP2022023564A (ja) * | 2020-07-27 | 2022-02-08 | キヤノン株式会社 | 情報処理装置、情報処理方法、及びプログラム |
| CN116763331A (zh) * | 2023-05-16 | 2023-09-19 | 深圳市安健科技股份有限公司 | 一种基于dr的通气量测量方法及装置 |
-
2004
- 2004-06-17 JP JP2004179618A patent/JP4560643B2/ja not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| JPN6010024352, 北岡裕子, "吸気呼気3D−CTを用いた局所換気量の推定", 臨床放射線, 20040110, 第49巻 第1号, P.72−78, JP, 金原出版 * |
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