A head holder for imaging is provided. The head holder includes a base, a head rest configured to receive a head of a subject, the head rest pivotally connected to the base and rotatable about a rotational axis defined through a lower end of the head rest, and a stopper configured to be inserted between the base and the head rest to support the head rest and fix the head rest at a tilt angle that corresponds to an insertion position of the stopper in a body axis direction of the subject.
