A computer-implemented method (and corresponding data processing facility and computer PROGRAM) for creating a 3D bifurcation healthy model from multiple 2D angiographic images comprises the following: a. Creating a 3-D model based ON said images b. Defining a bifurcation region regarding said 3D model c. Creating an area curve regarding said region d. Creating a reference area curve regarding said region whilst reconstructing in 2D e. Creating a healthy model regarding said area curves and f. Computing quantitative analysis results regarding said healthy model based ON the healthy cross-sectional areas of the bifurcation, obstruction boundaries and the diseased 3D model consisting of the bifurcation centerlines and cross-sections of the lumen ON the centerline and the healthy centerline and cross-sections.
