Radiation sensitive recording plate with orientation identifying marker, method of making, and of using same

A method of identifying a side from which a radiation-recording plate having a capacity to form an image of an object upon exposure to radiation impinging on the object and then incident upon the plate from a front side and having a capacity to form an image of an object upon exposure to radiation impinging on the object and then incident upon the plate from a back side has been exposed to radiation, comprising:

• exposing the plate to the radiation incident upon the plate from only one of the front side and the back side without constraint as to which;
• obtaining an image of the object produced by exposing the plate to the radiation impinging on the object and then incident upon the plate;
• and
• incorporating in the plate prior to exposure, in a position that substantially does not interfere with an image area of the plate, a marker producing a mark whose appearance in an image identifies both which side the plate is exposed from and which is indicative of any mirroring transformations performed upon an image recovered from the plate after exposure;
• and
• observing the image for the identification of the side of the plate exposed and for the indication of any mirroring transformations.

A method of making a radiation sensitive plate having at least one radiation sensitive layer, comprising:

• providing a film sensitive to the radiation on a first side of the radiation sensitive plate;
• applying a suspension of a heavy metal in a binder to a region of a second side of the radiation sensitive layer;
• providing a detectable marker on the first side;
• and wherein
• the detectable marker and the suspension of a heavy metal applied combined are distinct and asymmetric.

An image storage device holding an image data structure comprising:

• a recording medium;
• a data structure defined by a record in the recording medium of an image produced by exposure to radiation of a radiation-sensitive medium;
• and
• a mark embedded in the data structure, the mark produced during the exposure of the radiation-sensitive medium, and the mark both indicative of which side the radiation-sensitive medium was exposed from and indicative of any mirroring transformations performed upon the image in whose record the mark is embedded.