Abstract: The present invention provides a method for measuring a two-dimensional distribution of ionizing radiation doses with high spatial resolution. The method comprises exposing radiation sensitive film to a pattern of ionizing radiation to form a measurement film, exposing areas of radiation sensitive film to a plurality of known doses of the ionizing radiation to form a calibration film(s), scanning all the exposed films together with an unexposed radiation sensitive film at a single time to produce a digital image, measuring those areas of the digital image corresponding to the unexposed film and the calibration film(s) exposed to different known doses, associating the measured responses in the areas to the known doses and using the association to convert the values in the scanned image corresponding to the measurement film from scanner response values to dose values. In a preferred embodiment, all of the radiation sensitive films are the same type of film.

Abstract: The present invention provides a method for measuring a two-dimensional distribution of ionizing radiation doses with high spatial resolution. The method comprises exposing radiation sensitive film to a pattern of ionizing radiation to form a measurement film, exposing areas of radiation sensitive film to a plurality of known doses of the ionizing radiation to form a calibration film(s), scanning all the exposed films together with an unexposed radiation sensitive film at a single time to produce a digital image, measuring those areas of the digital image corresponding to the unexposed film and the calibration film(s) exposed to different known doses, associating the measured responses in the areas to the known doses and using the association to convert the values in the scanned image corresponding to the measurement film from scanner response values to dose values. In a preferred embodiment, all of the radiation sensitive films are the same type of film.

Abstract: A film media which is sensitive to low-energy x-rays which is suitable for use for measuring exposures within the range from about 200 to 1500 rads which is the range likely to cause patient skin injury. Moreover, the film product of the present invention can be made in large sheets. Accordingly, it is suitable for use during surgical procedures and particularly for full body exposure and in those cases when the location of the point of maximum exposure is not necessarily known. The Inventive film media is composed of a first support layer of a polymeric film which is permeable to low energy x-rays and a second layer thereon of a composition comprising a microcrystalline dispersion of a substantially crystalline image receptive polyacetylenic compound, and a compound that selectively absorbs incident low energy photon radiation.