A method is for displaying position information relating to a position of a region of interest of a patient relative to an examination unit of an imaging apparatus. A first examination plane is assignable to the examination unit and a camera is disposed relative to the examination unit such that, via a lens of the camera, three non-collinear reference points lying in a first reference plane parallel to the first examination plane are mapped to three collinear first image points lying on a first line. In an embodiment, the method includes capturing a camera image of the region of interest via the camera； displaying a positioning image, the positioning image including the camera image； and displaying first marking information relating to a position of the first line in the positioning image.
