Film density template and method for comparison of film exposure

A system for determining an optical density of radiographic imaging film, said system comprising:

• an emitter of soft x-ray radiation disposed about an axis at a first end;
• a platform disposed about said axis at a second end;
• an attenuator disposed between said emitter and said platform about said axis;
• a radiographic imaging film defining a surface normal to said axis and disposed between said platform and said attenuator;
• a mask for absorbing soft x-ray radiation disposed between said attenuator and said radiographic imaging film during a reference exposure;
• a template disposed between said attenuator and said radiographic imaging film, said template defining at least one aperture for selectively transmitting x-rays through to said radiographic imaging film during at least one template exposure thereby irradiating an exposed area of said radiographic film;
• wherein a predetermined sequence of said at least one template exposure and said reference exposure irradiate said radiographic film such that an optical density measurement of said radiographic film corresponds to a predetermined number of exposures.