The objective is to provide a delay circuit and an electronic circuit including a delay circuit which are capable of changing the operation speed of a circuit system including an operational amplifier and the delay circuit with ease. The pixel electrode includes at least one oblique edge including a plurality of protruded and depressed portions. Each of a penetrating member can pass between spokes of the disk substrate to provide that a used penetrating member can be removed and a new penetrating inserted without removing the disk. Within time windows that are synchronized with the edges of the trigger signals, a switch unit allows the associated receiving signals to pass through to the processing unit and blanks out all other signals. In still other embodiments, either before or after generating a digitized x-ray image, written notice to a human subject concerning the identity of one or more authorized intended recipients may be provided.