JPWO2018178272A5 - - Google Patents

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JPWO2018178272A5
JPWO2018178272A5 JP2019553250A JP2019553250A JPWO2018178272A5 JP WO2018178272 A5 JPWO2018178272 A5 JP WO2018178272A5 JP 2019553250 A JP2019553250 A JP 2019553250A JP 2019553250 A JP2019553250 A JP 2019553250A JP WO2018178272 A5 JPWO2018178272 A5 JP WO2018178272A5
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血管系の関心領域を含む2次元(2D)画像データを受信し、前記2D画像データは第1の画像取得デバイスによって得られ、
前記2D画像データに基づいて、第1の血管中心線に沿った複数の血管径を決定し、
前記関心領域の3次元(3D)画像データを受信し、前記3D画像データは第2の画像取得デバイスによって得られ、
前記3D画像データに基づいて、第2の血管中心線に沿った前記関心領域の第2のプロファイルを定める複数の第2の断面形状を決定し、
前記関心領域の拡張3Dモデルを生成し、
1つ又は複数のプロセッサと通信するディスプレイに前記拡張3Dモデルを出力する、
当該1つ又は複数のプロセッサを含む、血管系モデリングシステムであって、
前記拡張3Dモデルを生成するために、前記1つ又は複数のプロセッサは、
前記2D画像データに基づいて疑似3Dモデルを構築し、前記疑似3Dモデルは、前記第1の血管中心線に沿った前記関心領域の第1のプロファイルを定める複数の第1の断面形状を含み、前記複数の第1の断面形状は複数の円であり、前記複数の第1の断面形状のうちの第1の断面形状の各々は、前記複数の血管径のうちの対応する血管径を含み、
前記疑似3Dモデルを前記拡張3Dモデルへと変形し、
ここで、前記疑似3Dモデルを前記拡張3Dモデルへと変形するために、前記1つ又は複数のプロセッサは、前記複数の円を、前記複数の第2の断面形状となるように変形する、血管系モデリングシステム。
Two-dimensional (2D) image data including the region of interest of the vascular system is received , and the 2D image data is obtained by the first image acquisition device.
Based on the 2D image data, a plurality of blood vessel diameters along the first blood vessel center line are determined.
The 3D image data of the region of interest is received, and the 3D image data is obtained by the second image acquisition device.
Based on the 3D image data, a plurality of second cross-sectional shapes that define a second profile of the region of interest along the second blood vessel centerline are determined.
Generate an extended 3D model of the region of interest
Output the extended 3D model to a display that communicates with one or more processors.
A vasculature modeling system that includes the one or more processors.
To generate the extended 3D model, the one or more processors
A pseudo 3D model is constructed based on the 2D image data, and the pseudo 3D model includes a plurality of first cross-sectional shapes that define a first profile of the region of interest along the first blood vessel centerline. The plurality of first cross-sectional shapes are a plurality of circles, and each of the first cross-sectional shapes of the plurality of first cross-sectional shapes includes a corresponding blood vessel diameter of the plurality of blood vessel diameters.
The pseudo 3D model is transformed into the extended 3D model,
Here, in order to transform the pseudo 3D model into the extended 3D model, the one or more processors transforms the plurality of circles into the plurality of second cross-sectional shapes. System modeling system.
前記2D画像データの空間解像度は、前記3D画像データの空間解像度より大きい、請求項1に記載の血管系モデリングシステム。 The vascular modeling system according to claim 1, wherein the spatial resolution of the 2D image data is larger than the spatial resolution of the 3D image data. 前記1つ又は複数のプロセッサは、前記2D画像データの空間解像度を有する前記関心領域の前記拡張3Dモデルを生成する、請求項1に記載の血管系モデリングシステム。 The vascular modeling system according to claim 1, wherein the one or more processors generate the extended 3D model of the region of interest having the spatial resolution of the 2D image data. 前記1つ又は複数のプロセッサは、前記拡張3Dモデルにおいて、
血管中心線データに基づく前記第2の血管中心線、
前記複数の第2の断面形状、
前記2D画像データから導出される空間解像度、又は
前記2D画像データから導出される血管中心線データに基づく前記複数の血管径
のうちの少なくとも1つを維持するための条件を含む画像レジストレーション及び画像変形技法を使用して、前記3D画像データ及び前記2D画像データを組み合わせることによって、前記関心領域の前記拡張3Dモデルを生成する、請求項1に記載の血管系モデリングシステム。
The one or more processors in the extended 3D model
The second blood vessel center line based on the blood vessel center line data ,
The plurality of second cross- sectional shapes,
Spatial resolution derived from the 2D image data, or
Using image registration and image transformation techniques that include conditions for maintaining at least one of the plurality of blood vessel diameters based on the blood vessel centerline data derived from the 2D image data, the 3D image data and The vasculature modeling system according to claim 1, wherein the extended 3D model of the region of interest is generated by combining the 2D image data.
前記3D画像データは、磁気共鳴映像(MRI)画像データ若しくはコンピュータ断層撮影(CT)画像データである又は、
前記2D画像データは血管造影画像データである
のうちの少なくとも1つである、請求項1に記載の血管系モデリングシステム。
The 3D image data is magnetic resonance imaging (MRI) image data or computer tomography (CT) image data , or
The 2D image data is angiographic image data .
The vasculature modeling system according to claim 1, which is at least one of .
前記1つ又は複数のプロセッサは、
前記拡張3Dモデルを使用して血行動態シミュレーションを行い、及び
前記血行動態シミュレーションに基づいて少なくとも1つの血行動態パラメータを導出する、請求項1に記載の血管系モデリングシステム。
The one or more processors
Hemodynamic simulation was performed using the extended 3D model, and
The vasculature modeling system according to claim 1, wherein at least one hemodynamic parameter is derived based on the hemodynamic simulation.
前記1つ又は複数のプロセッサは、前記2D画像データ及び前記3D画像データに基づいて2D/3D画像レジストレーションプロセスを行って、レジストレーションされた2D及び3D画像データを作り出し、前記レジストレーションされた2D及び3D画像データに基づいて画像変形プロセスを行う、請求項1に記載の血管系モデリングシステム。 The one or more processors perform a 2D / 3D image registration process based on the 2D image data and the 3D image data to produce registered 2D and 3D image data, and the registered 2D. The vasculature modeling system according to claim 1, wherein the image transformation process is performed based on the 3D image data. 血管系の関心領域を含む2次元(2D)画像データを受信するステップであって、前記2D画像データは第1の画像取得デバイスによって得られる、前記2D画像データを受信するステップと、
前記2D画像データに基づいて、第1の血管中心線に沿った複数の血管径を決定するステップと、
前記関心領域の3次元(3D)画像データを受信するステップであって、前記3D画像データは第2の画像取得デバイスによって得られる、前記3D画像データを受信するステップと、
前記3D画像データに基づいて、第2の血管中心線に沿った前記関心領域の第2のプロファイルを定める複数の第2の断面形状を決定するステップと、
前記関心領域の拡張3Dモデルを生成するステップであって、当該生成するステップは、
前記2D画像データに基づいて疑似3Dモデルを構築するステップであって、前記疑似3Dモデルは、前記第1の血管中心線に沿った前記関心領域の第1のプロファイルを定める複数の第1の断面形状を含み、前記複数の第1の断面形状は複数の円であり、前記複数の第1の断面形状のうちの第1の断面形状の各々は、前記複数の血管径のうちの対応する血管径を含む、構築するステップと、
前記複数の円を、前記複数の第2の断面形状となるように変形することを含む、前記疑似3Dモデルを前記拡張3Dモデルへと変形するステップと、
を含む、生成するステップと、
1つ又は複数のプロセッサと通信するディスプレイに前記拡張3Dモデルを出力するステップと、を有する、血管系モデリングのためのコンピュータ実施方法。
A step of receiving two-dimensional (2D) image data including a region of interest of the vascular system , wherein the 2D image data is obtained by a first image acquisition device, and a step of receiving the 2D image data .
A step of determining a plurality of blood vessel diameters along the first blood vessel center line based on the 2D image data, and
The step of receiving the three-dimensional (3D) image data of the region of interest, wherein the 3D image data is obtained by the second image acquisition device, and the step of receiving the 3D image data.
A step of determining a plurality of second cross-sectional shapes that define a second profile of the region of interest along the second blood vessel centerline, based on the 3D image data.
The step of generating the extended 3D model of the region of interest is the step of generating.
A step of constructing a pseudo 3D model based on the 2D image data, wherein the pseudo 3D model is a plurality of first cross sections that define a first profile of the region of interest along the first blood vessel centerline. The plurality of first cross-sectional shapes including shapes are a plurality of circles, and each of the first cross-sectional shapes of the plurality of first cross-sectional shapes is a corresponding blood vessel of the plurality of blood vessel diameters. Steps to build, including diameter,
A step of transforming the pseudo 3D model into the extended 3D model, which comprises transforming the plurality of circles into the plurality of second cross-sectional shapes.
Including the steps to generate and
A computer-implemented method for vascular modeling , comprising outputting the enhanced 3D model to a display that communicates with one or more processors .
前記拡張3Dモデルに対する血行動態シミュレーションを行うステップと、前記血行動態シミュレーションから血行動態パラメータを導出するステップと、をさらに有する、請求項に記載のコンピュータ実施方法。 The computer implementation method according to claim 8 , further comprising a step of performing a hemodynamic simulation for the extended 3D model and a step of deriving a hemodynamic parameter from the hemodynamic simulation. 前記生成するステップは、
前記拡張3Dモデルにおいて、
前記3D画像データから導出される血管中心線データに基づく前記第2の血管中心線、
前記複数の第2の断面形状、
前記2D画像データから導出される空間解像度、又は
前記2D画像データから導出される血管中心線データに基づく前記複数の血管径
のうちの少なくとも1つを維持することを含む画像レジストレーション及び画像変形手順を使用する、請求項に記載のコンピュータ実施方法。
The step to generate is
In the extended 3D model,
The second blood vessel center line based on the blood vessel center line data derived from the 3D image data,
The plurality of second cross- sectional shapes,
Spatial resolution derived from the 2D image data, or
8. The computer practice of claim 8 , using image registration and image transformation procedures comprising maintaining at least one of the plurality of vessel diameters based on vessel centerline data derived from the 2D image data. Method.
少なくとも1つのプロセッサによって実行される時、画像処理システムを実施する、又は請求項に記載のコンピュータ実施方法のステップを実行する、コンピュータプログラム。 A computer program that, when executed by at least one processor, implements an image processing system or performs the steps of the computer implementation method of claim 8 . 前記1つ又は複数のプロセッサはさらに、 The one or more processors further
前記2D画像データに基づいて、2D経路を含む前記第1の血管中心線を決定し、 Based on the 2D image data, the first blood vessel center line including the 2D path is determined.
前記3D画像データに基づいて、3D経路を含む前記第2の血管中心線を決定し、 Based on the 3D image data, the second blood vessel center line including the 3D path is determined.
前記疑似3Dモデルは前記第1の血管中心線を含み、 The pseudo 3D model includes the first blood vessel centerline.
前記疑似3Dモデルを前記拡張3Dモデルへと変形するために、前記1つ又は複数のプロセッサはさらに、前記第1の血管中心線を、前記第2の血管中心線の前記3D経路を有するように変形する、請求項1に記載の血管系モデリングシステム。 In order to transform the pseudo 3D model into the extended 3D model, the one or more processors further have the first vessel centerline with the 3D path of the second vessel centerline. The vasculature modeling system according to claim 1, which is deformed.
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