OPTIMAL ROTATIONAL TRAJECTORY DETERMINATION FOR RA BASED ON PRE-DETERMINED OPTIMAL VIEW MAP

摘要

It is described a method for determining an optimal trajectory (25) for 3-dimensional rotational X-ray coronary angiography for a C-arm X-ray system. The C-arm X-ray system has at least two degrees of freedom. They are defined by a rotational movement of the C-arm (11) expressed in a left/right coronary artery oblique angle, and a roll motion of the C-arm (11) expressed in a caudal/cranial angle. The method performs the following steps in a sequence. Firstly, a generation of a 3-dimensional representation of a centre-line of a body vessel in a region of interest is performed. Secondly, at least one optimal view map is generated. Finally, an optimal trajectory (25) for the X-ray system within the optimal view map is determined, wherein an optimal trajectory (25) is at least determined by movements of the C-arm within its two degrees of freedom allowing image projections with minimal foreshortening and/or overlap while minimizing an exposure to X-rays.