The present invention relates to an apparatus for automatic quantification of a part of a vascular structure. At least one first image comprising the spatial representation of the region of interest of the vascular structure is provided (12). The at least one first image includes image data representing a location of a portion of the medical device. The medical device is used for vascular treatment and a portion of the medical device is configured to be in multiple states associated with various stages of vascular treatment. At least one second image comprising a spatial representation of the region of interest of the vascular structure is provided (14). The at least one second image includes image data representing at least a portion of the vascular structure in a clearly visible manner. The location of the feature in the spatial representation of the region of interest of the vascular structure of the at least one first image is determined (18). The feature is associated with a portion of the medical device in one of a plurality of states associated with a stage of vascular treatment. A transformation relating at least one location in the at least one first image to a corresponding at least one location in the at least one second image is determined 20 and the vascular structure of the at least one first image Of the features of interest in the spatial representation of the region of interest to provide a determined location in the spatial representation of the region of interest of the vascular structure of the at least one second image. Data representing the blood vessel structure at the determined location is output (22).本発明は、血管構造の一部の自動定量化のための装置に関する。血管構造の関心領域の空間表現を含む少なくとも1つの第1の画像が提供される(12)。少なくとも1つの第1の画像は、医療デバイスの一部の場所を表す画像データを含む。医療デバイスは、血管治療に使用され、医療デバイスの一部は、血管治療の様々な段階に関連付けられる複数の状態となるように構成される。血管構造の関心領域の空間表現を含む少なくとも1つの第2の画像が提供される(14)。少なくとも1つの第2の画像は、血管構造の少なくとも一部を表す画像データを、明白に見えるように含む。少なくとも1つの第1の画像の血管構造の関心領域の空間表現における特徴の場所が決定される(18)。特徴は、血管治療の段階に関連付けられる複数の状態のうちの1つにある医療
