Abstract: A medical targeting apparatus has assembly composed of several parts arranged so as to be able to be displaced relative to one another, an instrument control unit fastened to the assembly an adjustment arrangement for adjusting the parts and the instrument control unit relative to one another, a patient mount for positioning at least a body part of a patient in a diagnostic imaging apparatus, and a marking device, connected to the patient mount in a first position, for producing a visible mark in an image of the body part. A manually actuatable fastening arrangement is disposed on the assembly and/or on the patient mount for detachably fastening the assembly on the patient mount in a second position. The first and second positions are spaced from, and have a fixed relation to, one another.