Abstract: A security system for digital x-ray images is disclosed. In one example system, a direct capture digital x-ray imaging device is used to capture digital x-ray images. The direct capture digital x-ray imaging device then associates an identifier with the image. This identifier identifies the source of the image as being that particular device. In some example systems, the identifier is used to create a digital signature that identifies that particular image as being from that particular device. Some systems optionally include image encryption and/or compression.

Abstract: A filmless digital x-ray cassette comprising the following. A standard sized x-ray cassette housing having external dimensions approximately equal to the external dimensions of a standard x-ray cassette. An array system having a plurality of light sensitive pixels, the array system being disposed at least partially within the standard sized x-ray cassette housing. An electronics system, coupled in communications with the array system, the electronics system converting pixel values received from the array system into a digital image. A communications circuit, coupled to the electronics system, having a digital image output.

Abstract: In a diagnostic process in which two images are made on an image recording medium of the same structure at the beginning and the end of a time interval during which the structure changes, a method is provided for permitting a computing device to improve the alignment of the images as reproduced in the form of pixels on a monitor screen. A particular spatial pattern of marker elements is provided, when each of the images is made, in a particular juxtaposition to the structure being imaged, so that the shadows of the elements arise on the respective images. The computing device can then rotate, translate and alter the scale of one image with respect to the other until the shadows of the elements on one image coincide as closely as possible with those on the other image.