Abstract: A radiation image formation system capable of reducing a magnified phase contrast image radiographed to life size and of outputting the reduced image at an output apparatus.

Abstract: A mammography apparatus capable of irradiating radiation having enough irradiation dose to radiograph an image surely. The mammography apparatus has: a radiation source; a subject platform for supporting a subject so as to face the subject to the radiation source; a radiation image detector located so as to be faced to the radiation source with respect to the subject platform for detecting radiation transmitted through the subject; a controller for controlling the radiation source; wherein the controller sets an irradiation condition of the radiation to be irradiated from the radiation source based on control conditions including at least thickness of the subject and a distance from the radiation source to the subject platform.

Abstract: An X-ray image radiographing system for radiographing a subject is provided with an X-ray source to emit X-rays; a digital X-ray detector to detect a digital X-ray image of the subject, wherein the subject is placed between the X-ray source and the digital X-ray detector in an arrangement to satisfy the following formulas so than an edge of the digital X-ray image is enhanced oven an edge-enhanced width: 0.1 m≦R1≦10 m, and 0.15 m≦R2≦10 m, where R1 is a distance between the X-ray tube and the subject and R2 is a distance between the subject and the digital X-ray detector. The digital X-ray detector has a pixel size almost equal to the half of the edge-enhanced width.

Abstract: A radiation image processing apparatus is provided with a defect detecting device to receive first image data from a sensor which comprises plural elements arranged two-dimensionally, converts irradiated radiation into electric image signals by the plural elements and outputs image data in which each element outputs an image datum of a single pixel, the defect detecting device to detect an image defect in the first image data and to produce defect information indicating a position of the image defect; a memory to store the defect information; and a correcting device for receiving second image data outputted from the sensor on a condition that the sensor is irradiated with radiation passing through an object, for correcting the second image data on the basis of the defect information read out from the memory, and for producing third image data.

Abstract: A radiation image detector is provided with a first layer to emit light corresponding to a strength of a radiation incident thereon; a second layer to convert the light emitted from the first layer into electric energy; a third layer to accumulate the electric energy obtained by the second layer and to output a signal based on the accumulated electric energy so that the radiation image detector outputs an image signal corresponding to the incident radiation based on the signal outputted from the third layer; and a forth layer made of a resin and to hold the first, second and third layers.

Abstract: A radiation image detecting device, comprises: a scintillator to emit light in accordance with an intensity of radiation energy when being irradiated with radiation; a lens array in which a plurality of lens units are arranged in a form of an array, wherein the light emitted from the scintillator passes through the lens array; a lattice to partition the lens array, wherein the plurality of lens units are arranged on the lattice; and a plurality of area sensors corresponding to the plurality of lens units of the lens array, the plurality of area sensors receiving the light having passed through the plurality of lens units and converting the light into electric signals, wherein the scintillator, the lens array and the plurality of area sensors are arranged in that order.

Abstract: A X-ray image forming method, comprising steps of: conducting a magnifying radiography by irradiating an object with divergent X-ray emitted from a X-ray tube; and forming a X-ray image by detecting X-ray passing through the object by a X-ray detector; wherein the magnifying radiography is conducted to satisfy the following formula: 9E≧B, where B is a width (&mgr;m) of a blurred portion of the X-ray image caused by penumbra and E is a width (&mgr;m) of an edge portion enhanced by X-ray refraction contrast.

Abstract: A photographic combination for use in radiography to project a refraction contrast image is disclosed, comprising a radiographic intensifying screen and a silver halide light sensitive photographic material, wherein the photographic material comprises a support having on only one side of the support a light sensitive layer, the photographic combination exhibiting a speed of 200 to 750. A radiographic system comprising an X ray source and the photographic combination is also disclosed.

Abstract: A phase contrast radiographic image processing apparatus, comprises: a management information storing section to store management information regarding a radiography; and an image processing section to apply an image processing onto a phase contrast radiographic image produced by the phase contrast radiography, wherein the image processing section determines an image processing condition based on the management information stored in the management information storing section and conducts the image processing based on the determined image processing condition.

Abstract: A radiographic image forming method is disclosed. The method comprises the steps of (1) interposing a silver halide photographic material which comprises a support having a silver halide emulsion layer on each of both sides the support and has a cross-over value of not more than 15%, between two sheets of an intensifying screen comprising a support and a fluorescent layer composed of plural fluorescent sub-layers and a protect layer provided on the support in this order from the support, in which the fluorescent sub-layers each comprises a binder and particles of a fluorescent substance having the average particle size R and the standard deviation .sigma. of the particle size distribution satisfying a relation of 0 <.sigma./R.ltoreq.0.

Abstract: An apparatus for recording and reading a radiographic image formed by exposing a subject with radioactive rays includes a cooling device to cool a photostimulable phosphor containing iodine to a range of 250K to 300K. The cooled photostimulable phosphor is irradiated with radioactive rays so that radiographic energies corresponding to said radioactive rays are stored on the cooled photostimulable phosphor. The cooled photostimulable phosphor is stimulated with an exciting light so as to emit lights corresponding to the stored radiographic energies.