JP2017522952A - 肺のセグメント化のためのシステムおよび方法 - Google Patents
肺のセグメント化のためのシステムおよび方法 Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0012—Biomedical image inspection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/11—Region-based segmentation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/13—Edge detection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/136—Segmentation; Edge detection involving thresholding
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/155—Segmentation; Edge detection involving morphological operators
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/187—Segmentation; Edge detection involving region growing; involving region merging; involving connected component labelling
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H30/00—ICT specially adapted for the handling or processing of medical images
- G16H30/20—ICT specially adapted for the handling or processing of medical images for handling medical images, e.g. DICOM, HL7 or PACS
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H30/00—ICT specially adapted for the handling or processing of medical images
- G16H30/40—ICT specially adapted for the handling or processing of medical images for processing medical images, e.g. editing
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- 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
- G06T2207/10—Image acquisition modality
- G06T2207/10072—Tomographic images
- G06T2207/10081—Computed x-ray tomography [CT]
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- 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
- G06T2207/20—Special algorithmic details
- G06T2207/20092—Interactive image processing based on input by user
- G06T2207/20101—Interactive definition of point of interest, landmark or seed
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- 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
- G06T2207/20—Special algorithmic details
- G06T2207/20112—Image segmentation details
- G06T2207/20156—Automatic seed setting
-
- 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
- G06T2207/30061—Lung
Abstract
Description
本出願は、2014年7月2日に出願された米国仮特許出願番号第62/020,261号に基づく利益および優先権を主張しており、その全体の開示は参考として本明細書中に援用される。
(技術分野)
本開示は、肺の分割(セグメント化)のためのシステムおよび方法に関する。より具体的には、本開示は、患者の胸部のCTスキャン画像データに基づいて生成される3次元(3D)モデルに基づいて、肺の境界を画定するシステムおよび方法に関する。
患者の肺は、肺の基部に位置する筋肉横隔膜によって腹腔から分離される、胸腔内に位置する。さらに、肺は、胸膜(臓側胸膜および壁側胸膜)と呼ばれる二重壁嚢および胸膜と肺との間の胸膜液によって取り囲まれる。胸膜液は、肺が胸膜に付着することなく拡張および収縮することを可能にする。
本開示に従って、肺の胸膜境界を判定するための方法が提供される。
本開示は、患者の肺の胸膜境界を識別するように患者の胸部の画像データを分割するためのシステムおよび方法に関する。
Claims (16)
- 肺の胸膜境界を判定するための分割方法であって、
撮像デバイスから画像データを取得するステップと、
前記取得された画像データに基づいて、2次元(2D)スライス画像のセットを生成するステップと、
プロセッサによって、前記2Dスライス画像のセットからの第1のスライス画像内のシードボクセルを判定するステップと、
前記プロセッサによって、閾値を使用して前記シードボクセルで始まって、領域増大プロセスを前記2Dスライス画像のセットからの前記第1のスライス画像に適用するステップと、
前記プロセッサによって、前記シードボクセルから増大させられる領域に基づいて、2値化2Dスライス画像のセットを生成するステップと、
前記プロセッサによって、前記2値化2Dスライス画像のセットの各スライス画像内の前記肺の接続される構成要素を除外するステップと、
前記プロセッサによって、前記2値化2Dスライス画像のセットに基づいて、前記肺の前記胸膜境界を識別するステップと、
を含む、分割方法。 - 前記シードボクセルは、前記肺の気管に対応する前記2値化2Dスライス画像のセットからの前記第1のスライス画像の一部の中にある、請求項1に記載の分割方法。
- 前記閾値は、前記シードボクセルの強度を上回るか、またはそれに等しい、請求項1に記載の分割方法。
- 前記取得された画像データは、医用デジタル画像および通信(DICOM)画像形式で記憶される、請求項1に記載の分割方法。
- 前記画像データは、ネットワークデバイスを介して取得される、請求項1に記載の分割方法。
- 前記領域増大プロセスを適用するステップは、
前記2Dスライス画像のセットからの前記第1のスライス画像内の第1のボクセルの強度が事前判定された閾値より低く、前記第1のボクセルが前記シードボクセルに接続される場合、前記第1のボクセルの前記強度を最大値として設定することと、
前記2Dスライス画像のセットからの前記第1のスライス画像内の第2のボクセルの強度が事前判定された閾値より低くないか、または前記第1のボクセルが前記シードボクセルに接続されない場合、前記第2のボクセルの前記強度を最小値として設定することと、
を含む、請求項1に記載の分割方法。 - 前記閾値は、前記2Dスライス画像のセット内の前記シードボクセルの周囲に高強度領域を出現させる、請求項6に記載の分割方法。
- 前記領域増大プロセスを適用するステップはさらに、前記2値化2Dスライス画像のセットを得るように、前記最小値から前記最大値まで、および前記最大値から前記最小値まで、前記2Dスライス画像のセットの中のボクセルの値を逆に割り当てることを含む、請求項6に記載の分割方法。
- 前記肺の接続される構成要素を除外するステップは、
前記2値化2Dスライス画像のセットの中の接続される構成要素を検出することと、
前記2値化2Dスライス画像のセットの中の各接続される構成要素の面積を計算することと、
各接続される構成要素の前記面積が事前判定された値未満であるかどうかを判定することと、
第1の接続される構成要素の面積が前記事前判定された値未満であることが判定されるときに、前記最小値を前記第1の接続される構成要素のピクセルに割り当てることと、
第2の接続される構成要素の面積が前記事前判定された値を上回るか、または等しいことが判定されるときに、前記最大値を前記接続される構成要素のピクセルに割り当てることと、
を含む、請求項1に記載の分割方法。 - 接続される構成要素は、高い強度を伴う囲われた面積である、請求項9に記載の分割方法。
- 前記接続される構成要素は、血管または気道である、請求項9に記載の分割方法。
- それぞれが3つの独立した方向のそれぞれに由来する3つの2Dスライス画像の交差点は、前記2Dスライス画像のセットの中のボクセルを識別する、請求項9に記載の分割方法。
- 前記3つの独立した方向は、軸方向、冠状方向、および矢状方向である、請求項12に記載の分割方法。
- 前記2値化2Dスライス画像のセットの各ボクセルは、高いかまたは低い強度のいずれか一方を有する、請求項1に記載の分割方法。
- 前記画像データは、コンピュータ断層撮影技法、X線撮影法、コンピュータ軸トモグラフィスキャンによって生成されるトモグラム、磁気共鳴撮像、超音波検査法、造影撮像、蛍光透視法、核スキャン、および陽電子放射トモグラフィから取得される、請求項1に記載の分割方法。
- 肺の胸膜を判定するためのシステムであって、
患者の胸部を撮像して画像データを得るように構成される、撮像デバイスと、
画像処理デバイスであって、
データおよびプロセッサ実行可能命令を記憶するように構成されるメモリと、
前記取得された画像データに基づいて、2次元(2D)スライス画像のセットを生成し、
前記2Dスライス画像のセットからの第1のスライス画像内のシードボクセルを判定し、
閾値を使用して前記シードボクセルで始まって、領域増大プロセスを前記2Dスライス画像のセットからの前記第1のスライス画像に適用し、
前記シードボクセルから増大させられる領域に基づいて、2値化2Dスライス画像のセットを生成し、
前記2値化2Dスライス画像のセットの各スライス画像内の前記肺の接続される構成要素を除外し、
前記2値化2Dスライス画像のセットに基づいて、前記肺の前記胸膜境界を識別する、
前記プロセッサ実行可能命令を実行するように構成される、プロセッサと、
を含む、画像処理デバイスと、
を備える、システム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US201462020261P | 2014-07-02 | 2014-07-02 | |
US62/020,261 | 2014-07-02 | ||
PCT/US2015/038541 WO2016004030A1 (en) | 2014-07-02 | 2015-06-30 | System and method for segmentation of lung |
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JP2017522952A true JP2017522952A (ja) | 2017-08-17 |
JP6603245B2 JP6603245B2 (ja) | 2019-11-06 |
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EP (1) | EP3164072B1 (ja) |
JP (1) | JP6603245B2 (ja) |
CN (1) | CN106659453B (ja) |
AU (1) | AU2015284218B2 (ja) |
CA (1) | CA2953146A1 (ja) |
WO (1) | WO2016004030A1 (ja) |
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AU2015284218A1 (en) | 2017-01-05 |
JP6603245B2 (ja) | 2019-11-06 |
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