Angiography system for angiographic examination of an object under examination and angiographic examination method

An angiography system for angiographic examination or treatment of an organ, vascular system or other regions of an object of a patient is proposed. The system has an x-ray source and an x-ray image detector disposed at ends of a C-arm, a patient support table, a system control unit, an image system, and a monitor. The object contains two details hiding each other in the x-ray images depending on angulation of the C-arm. The system control unit has a device that detects a 3D dataset of the object registered to the C-arm and detects the information about a course of the object. The device calculates a desired and/or optimum angulation of the C-arm from the detected information and transfers the calculated angulation to the system control unit for adjusting the C-arm to the angulation.