JP4542415B2 - デジタル減算アンギオグラフィに適用される画像の位置合わせ方法 - Google Patents
デジタル減算アンギオグラフィに適用される画像の位置合わせ方法 Download PDFInfo
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- JP4542415B2 JP4542415B2 JP2004336202A JP2004336202A JP4542415B2 JP 4542415 B2 JP4542415 B2 JP 4542415B2 JP 2004336202 A JP2004336202 A JP 2004336202A JP 2004336202 A JP2004336202 A JP 2004336202A JP 4542415 B2 JP4542415 B2 JP 4542415B2
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Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/14—Transformations for image registration, e.g. adjusting or mapping for alignment of images
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/30—Determination of transform parameters for the alignment of images, i.e. image registration
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30004—Biomedical image processing
- G06T2207/30101—Blood vessel; Artery; Vein; Vascular
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- Engineering & Computer Science (AREA)
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- Apparatus For Radiation Diagnosis (AREA)
- Image Processing (AREA)
Description
Meijering他、「ImageEnhancement in Digital X−Ray Angiography」 Image Sciences Institute,Utrecht,Netherlands, chap. 2, 2000
15 ランドマーク
16 ランドマーク
17 ランドマーク
18 ランドマーク
19 三角形
20 下位三角形
21 下位三角形
22 下位三角形
23 下位三角形
24 中間ランドマーク
25 中間ランドマーク
26 中間ランドマーク
36 輪郭
37 輪郭
38 第1の種類の画素
39 第2の種類の画素
Claims (7)
- デジタル減算アンギオグラフィにおける画像の位置合わせ方法であって、
身体内に造影剤を注射することなく収集された第1のデジタルマスク画像を規則的な幾何学的パターンで分割する段階と、
前記幾何学的パターンの角に定められるランドマークを用いることにより前記身体内に造影剤を注射したときに収集された第2のデジタルコントラスト画像に対して前記マスク画像を位置合わせする段階と、
位置合わせ後にこれら2つの画像を減算処理する段階と、
前記減算処理した画像を表示する段階と、
前記ランドマークの堅牢性を試験する段階と、
前記堅牢性が不十分である場合に前記規則的な幾何学的パターンの細区画を行う段階と、
を含む方法。 - 前記マスク画像の分割中に用いられる前記規則的な幾何学的パターンが三角形である請求項1に記載の方法。
- 前記堅牢性が前記規則的な幾何学的パターン内の画素の同質性を評価することにより試験される請求項1又は2に記載の方法。
- 前記マスク画像の位置合わせが、各ランドマークに関するシフトベクトルを計算し、これらのシフトベクトルを補間によって前記マスク画像の画素の残りの部分に反映させる非固定位置合わせである請求項1から請求項3のうちの1項に記載の方法。
- 位置合わせすべき前記マスク画像の各ランドマークに関して関心領域を選択する段階と、
前記マスク画像と前記コントラスト画像との間の類似性の処理によって前記ランドマークのシフトを計算する段階とを含む請求項4に記載の方法。 - コンピュータシステムに請求項1から請求項5のうちの1項に記載の方法の各段階を実行させるためのプログラムコード手段を含むコンピュータプログラム。
- 機械によって実行可能な請求項1から請求項5のうちの1項に記載の方法の前記各段階を実行するための命令プログラムを有形的に具現する機械によって読み出し可能なプログラム記憶デバイス。
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FR0350882A FR2862786B1 (fr) | 2003-11-21 | 2003-11-21 | Procede de recalage elastique d'une image applique a l'angiographie soustraite numerisee |
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JP4542415B2 true JP4542415B2 (ja) | 2010-09-15 |
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US (1) | US7409078B2 (ja) |
JP (1) | JP4542415B2 (ja) |
DE (1) | DE102004056095A1 (ja) |
FR (1) | FR2862786B1 (ja) |
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2003
- 2003-11-21 FR FR0350882A patent/FR2862786B1/fr not_active Expired - Fee Related
-
2004
- 2004-11-10 US US10/985,803 patent/US7409078B2/en active Active
- 2004-11-19 DE DE102004056095A patent/DE102004056095A1/de not_active Withdrawn
- 2004-11-19 JP JP2004336202A patent/JP4542415B2/ja not_active Expired - Fee Related
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JPH03244440A (ja) * | 1990-02-23 | 1991-10-31 | Toshiba Corp | X線診断装置 |
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Publication number | Publication date |
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FR2862786A1 (fr) | 2005-05-27 |
FR2862786B1 (fr) | 2006-01-06 |
US20050111719A1 (en) | 2005-05-26 |
JP2005204282A (ja) | 2005-07-28 |
US7409078B2 (en) | 2008-08-05 |
DE102004056095A1 (de) | 2005-06-23 |
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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