WO2017043194A1 - マッピング画像表示制御装置および方法並びにプログラム - Google Patents
マッピング画像表示制御装置および方法並びにプログラム Download PDFInfo
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- 238000013507 mapping Methods 0.000 title claims abstract description 78
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- 210000004072 lung Anatomy 0.000 claims abstract description 84
- 210000000056 organ Anatomy 0.000 claims abstract description 65
- 238000000605 extraction Methods 0.000 claims abstract description 35
- 238000002271 resection Methods 0.000 claims abstract description 21
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- 238000002679 ablation Methods 0.000 claims description 59
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- 238000002595 magnetic resonance imaging Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
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- 210000000115 thoracic cavity Anatomy 0.000 description 1
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Definitions
- the mapping image display control device of the present invention includes an organ region extraction unit that extracts an organ region included in a three-dimensional image, a tubular structure extraction unit that extracts a tubular structure included in the organ region, and a tubular structure.
- An arrival position information estimation unit that estimates arrival position information at which the extension of the included branch reaches the surface of the organ region, an excision region information acquisition unit that acquires information on the excision region in the organ region, and information on the excision region Based on the arrival position information, the boundary specific arrival position information determination unit that determines the boundary position arrival position information used to identify the boundary of the ablation region from the arrival position information, and And a display control unit that generates a mapping image mapped on the surface and displays the mapping image on the display unit.
- information on the resection area in the organ area is acquired, and based on the information on the resection area, arrival position information for boundary specification used for specifying the boundary of the resection area from the above-described arrival position information is obtained. Then, a mapping image in which the arrival position information for specifying the boundary is mapped on the surface of the organ region is generated and displayed on the display unit.
- the staining position corresponding to the bronchus to be selected in order to appropriately remove the tumor from the staining position (arrival position information) on the lung surface obtained by the simulation is used as the boundary position specifying position information. Since it can be determined automatically, the user's work can be reduced.
- the organ region extraction unit 11 performs a process of extracting a lung region from the three-dimensional image 6 of the chest acquired by the medical image acquisition unit 10.
- a method of extracting the lung region since the lung field is a region where air exists, a method of extracting the lung region by thresholding the signal value of each pixel position of the three-dimensional image 6
- a known method such as a region expansion method based on a seed point representing a lung region can be used.
- the arrival position information that exists inside the ablation region is used as the boundary position arrival position information. It is desirable to decide. That is, even if the arrival position information is a short distance from the boundary of the ablation area, the arrival position information existing outside the ablation area is not determined as the arrival position information for specifying the boundary, and the arrival position information existing inside the ablation area is not determined. It is desirable to determine the position information that is the position information and has a short distance from the boundary of the ablation region as the position information for boundary identification.
- the arrival position information that maximizes the area of the polygon formed by connecting three or more arrival position information is used for boundary identification. It may be determined as position information. Specifically, all combinations of three or more arrival position information are set for a plurality of arrival position information existing in the excision region, and the area of the polygon formed by each combination is calculated. And the arrival position information of the combination which forms the polygon with the largest area among the polygons formed by each combination may be determined as the arrival position information for specifying the boundary.
- the polygon formed by a combination of three or more arrival position information is a polygon formed by connecting the arrival position information with a straight line with the three or more arrival position information as vertices.
- a branch position information acquisition unit 17 is further provided for the mapping image display control apparatus 1, and the branch position information acquired by the branch position information acquisition unit 17 and the branch end of the graph structure A straight line set based on the above may be estimated as an extension line of the branch of the bronchial region.
- the branch extension line is estimated using both the pulmonary vein region and the pulmonary artery region. However, only one of them may be used to estimate the branch extension line. Good.
- a branch extension line may be estimated from a straight line that is parallel to the first vector set based on the pulmonary artery region and passes through the branch end T.
- the branch extension line may be estimated from a straight line that is parallel to the second vector set based on the pulmonary vein region and passes through the branch end T.
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Abstract
Description
2 医用画像保管サーバ
3 表示装置
4 入力装置
10 医用画像取得部
11 臓器領域抽出部
12 管状構造物抽出部
13 到達位置情報推定部
14 切除領域情報取得部
15 境界特定到達位置情報決定部
16 表示制御部
17 分岐位置情報取得部
18 血管領域抽出部
Claims (12)
- 3次元画像に含まれる臓器領域を抽出する臓器領域抽出部と、
前記臓器領域内に含まれる管状構造物を抽出する管状構造物抽出部と、
前記管状構造物に含まれる分枝の延長線が前記臓器領域の表面に到達する到達位置情報を推定する到達位置情報推定部と、
前記臓器領域における切除領域の情報を取得する切除領域情報取得部と、
前記切除領域の情報に基づいて、前記到達位置情報の中から前記切除領域の境界を特定するために用いられる境界特定用の到達位置情報を決定する境界特定到達位置情報決定部と、
前記境界特定用の到達位置情報を前記臓器領域の表面にマッピングしたマッピング画像を生成して表示部に表示させる表示制御部とを備えたことを特徴とするマッピング画像表示制御装置。 - 前記境界特定到達位置情報決定部が、前記臓器領域の表面上における前記切除領域の境界から予め設定された範囲内に存在する前記到達位置情報を前記境界特定用の到達位置情報として決定する請求項1記載のマッピング画像表示制御装置。
- 前記境界特定到達位置情報決定部が、前記臓器領域の表面上における前記切除領域の境界からの距離が近い順で予め設定された個数の前記到達位置情報を前記境界特定用の到達位置情報として決定する請求項1記載のマッピング画像表示制御装置。
- 前記境界特定到達位置情報決定部が、前記切除領域の内側に存在する前記到達位置情報を前記境界特定用の到達位置情報として決定する請求項3記載のマッピング画像表示制御装置。
- 前記境界特定到達位置情報決定部が、前記臓器領域の表面上における前記切除領域内に存在する前記到達位置情報のうち、3個以上の前記到達位置情報を結んで形成される多角形の面積が最大となる前記3個以上の到達位置情報を前記境界特定用の到達位置情報として決定する請求項1記載のマッピング画像表示制御装置。
- 前記切除領域情報取得部が、前記臓器領域内に含まれる病変領域を抽出し、該病変領域に基づいて、前記切除領域の情報を取得する請求項1から5いずれか1項記載のマッピング画像表示制御装置。
- 前記切除領域情報取得部が、前記管状構造物に含まれる分枝の支配領域を決定し、該支配領域に基づいて、前記切除領域の情報を取得する請求項1から5いずれか1項記載のマッピング画像表示制御装置。
- 前記表示制御部が、前記境界特定用の到達位置情報によって特定される到達位置を含む領域を設定し、該領域を前記肺領域の表面にマッピングしたマッピング画像を生成して表示部に表示させる請求項1から7いずれか1項記載のマッピング画像表示制御装置。
- 前記臓器領域が肺領域であり、前記管状構造物が気管支領域である請求項1から8いずれか1項記載のマッピング画像表示制御装置。
- 前記管状構造物の分岐位置の情報を取得する分岐位置情報取得部を備え、
前記到達位置情報推定部が、前記分岐位置の情報に基づいて、前記到達位置情報を推定する請求項1から9いずれか1項記載のマッピング画像表示制御装置。 - 3次元画像に含まれる臓器領域を抽出し、
前記臓器領域内に含まれる管状構造物を抽出し、
前記管状構造物に含まれる分枝の延長線が前記臓器領域の表面に到達する到達位置情報を推定し、
前記臓器領域における切除領域の情報を取得し、
前記切除領域の情報に基づいて、前記到達位置情報の中から前記切除領域の境界を特定するために用いられる境界特定用の到達位置情報を決定し、
前記境界特定用の到達位置情報を前記臓器領域の表面にマッピングしたマッピング画像を生成して表示部に表示させることを特徴とするマッピング画像表示制御方法。 - コンピュータを、3次元画像に含まれる臓器領域を抽出する臓器領域抽出部と、
前記臓器領域内に含まれる管状構造物を抽出する管状構造物抽出部と、
前記管状構造物に含まれる分枝の延長線が前記臓器領域の表面に到達する到達位置情報を推定する到達位置情報推定部と、
前記臓器領域における切除領域の情報を取得する切除領域情報取得部と、
前記切除領域の情報に基づいて、前記到達位置情報の中から前記切除領域の境界を特定するために用いられる境界特定用の到達位置情報を決定する境界特定到達位置情報決定部と、
前記境界特定用の到達位置情報を前記臓器領域の表面にマッピングしたマッピング画像を生成して表示部に表示させる表示制御部として機能させることを特徴とするマッピング画像表示制御プログラム。
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