JP2020533102A - 3次元脳地図の生成方法及びプログラム - Google Patents
3次元脳地図の生成方法及びプログラム Download PDFInfo
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Abstract
Description
は最適点を定義する際に用いられたfを最適点である
で微分した値であり、v(x、y、z)は(x、y、z)方向への法線ベクトルを意味する。
Claims (10)
- 対象体の脳MRI画像を獲得する段階と、
前記脳MRI画像を複数の領域にセグメンテーションする段階と、
セグメンテーションされた前記脳MRI画像を用いて前記複数の領域を含む前記対象体の3次元脳画像を生成する段階と、
前記3次元脳画像に含まれている複数の領域のそれぞれの性質に基づいて、前記対象体の脳に対する電気的刺激の伝達過程をシミュレーションできる前記対象体の3次元脳地図を生成する段階と、
を含み、
前記セグメンテーションする段階は、
複数の加工された脳MRI画像を用いて学習されたモデルに前記対象体の脳MRI画像を入力してセグメンテーションされた前記対象体の脳MRI画像を獲得する段階を含む、
3次元脳地図の生成方法。 - 前記加工された脳MRI画像は、前記加工された脳MRI画像に含まれている複数の領域のそれぞれがラベリングされた画像であり、
前記学習されたモデルは、
脳MRI画像の入力を受けて、セグメンテーションされた脳MRI画像を出力するモデルであることを特徴とする請求項1に記載の3次元脳地図の生成方法。 - 前記対象体の3次元脳地図を生成する段階は、
前記対象体の3次元脳画像を用いて前記対象体の脳に対する電気的刺激の伝達過程をシミュレーションできる複数の格子(mesh)で構成された3次元立体画像を生成する段階を含むことを特徴とする請求項1に記載の3次元脳地図の生成方法。 - 前記対象体の3次元脳地図を生成する段階は、
前記対象体の脳に対する電気的刺激による電流の流れをシミュレーションするための前記複数の領域それぞれの物理的特性を獲得する段階を含み、
前記物理的特性は、前記複数の領域のそれぞれの等方性(isotropic)電気伝導率及び異方性(anisotropic)電気伝導率のうちの少なくとも1つを含むことを特徴とする請求項1に記載の3次元脳地図の生成方法。 - 前記物理的特性を獲得する段階は、
前記対象体の脳MRI画像から前記対象体の脳に対する伝導テンソル画像を獲得する段階と、
前記伝導テンソル画像を用いて前記複数の領域のそれぞれの異方性電気伝導率を獲得する段階と、
を含むことを特徴とする請求項4に記載の3次元脳地図の生成方法。 - 前記対象体の脳MRI画像は拡散テンソル画像を含み、
前記物理的特性を獲得する段階は、
前記対象体の拡散テンソル画像を用いて前記複数の領域のそれぞれの異方性電気伝導率を獲得する段階と、
を含むことを特徴とする請求項4に記載の3次元脳地図の生成方法。 - 前記3次元脳地図を用いて、前記対象体の頭の一地点に特定の電気的刺激が与えられるときに、前記特定の電気的刺激が前記対象体の脳から伝播される状態をシミュレーションする段階を更に含むことを特徴とする請求項1に記載の3次元脳地図の生成方法。
- 前記対象体の脳で電気的刺激を与える刺激目標地点を獲得する段階と、
前記3次元脳地図を用いて、前記刺激目標地点に電気的刺激を与えるために前記対象体の頭に電気的刺激を与える位置を獲得する段階と、
を更に含むことを特徴とする請求項1に記載の3次元脳地図の生成方法。 - 前記電気的刺激を与える位置を獲得する段階は、
前記3次元脳地図を用いて、前記対象体の頭皮から前記刺激目標地点まで電気的刺激が伝達されるための推薦経路を獲得する段階と、
前記推薦経路から前記対象体の頭に電気的刺激を与える位置を獲得する段階と、
を含むことを特徴とする請求項8に記載の3次元脳地図の生成方法。 - ハードウェアであるコンピュータで読み取り可能な記録媒体に格納され、請求項1に記載の方法を前記コンピュータで実行するためのコンピュータプログラム。
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