Abstract: A method for reading a radiographic image by irradiating an image storage panel having a layer formed by vacuum evaporation and containing a stimulable alkali halide binderless phosphor. The irradiation takes place with an excitation ray at an oblique angle to a line normal to the panel and the phosphor comprises a pile-like structure. The method produces sharper images and improved sensitivity.

Abstract: Disclosed are a method for converting radiographic image which comprises the steps of:(a) storing radiation energy-corresponding to a radiographic image in a stimulable phosphor of a panel comprising a stimulable phosphor-containing layer,(b) scanning the layer with a stimulating ray to release the stored energy as a fluorescence, and(c) detecting the fluorescence to form an image, wherein the stimulable phosphor is represented by the following formula:(M.sub.1-x.M.sup.I.sub.x)X.aM.sup.II X'.sub.2.bM.sup.III X".sub.3 :dBwherein M represents either Cs or Rb; M.sup.I represents at least one of alkaline metals selected from the group consisting of Li, Na, K, Rb and Cs; M.sup.II represents at least one divalent meal selected from the group consisting of Be, Mg, Ca, Sr, Ba, Zn, Cd, Cu and Ni; M.sup.

Abstract: There are disclosed a radiation image storage panel having a stimulable layer and a protective layer on a support, which comprises a layer having a lower refractive index than the protective layer is provided between the stimulable phosphor layer and the protective layer; and a process for preparing a radiation image storage panel composed of a support, a stimulable phosphor layer and a protective layer, and a protective layer supporting member is so provided between layers of the support and the protective layer as to surround and seal edges of the stimulable phosphor layer, which comprises the steps of providing at least one notch to the protective layer supporting member which functions as a vent hole, heating and drying the radiation image storage panel, and then fusing and sealing the notch or notches.

Abstract: Disclosed is a radiation image storage panel, which comprises a support, a flame-sprayed layer and a stimulable phosphor layer formed by a vapor phase build-in method in succession and method for preparing the same. According to this invention, radiation images which are high in radiation sensitivity and sharpness can be obtained.

Abstract: Disclosed is a radiation image storage panel comprising a heat generating body for drying assembled in a radiation image storage panel using a light stimulable phosphor.According to this invention, a radiation image storage panel which can stand uses for a long term can be obtained.

Abstract: A radiation image information reading method includes scanning a stimulating ray on a radiation image converting panel surface to obtain radiation image information stored on the radiation image converting panel, the scanning step including performing scanning of the stimulating ray while repeating successively irradiation and stopping thereof. In this manner, the noise caused by fluorescent afterflow, stimulation afterglow, stray light from outside of the apparatus or a laser beam, etc., can be removed simply and correctly. A visible image which is correct with good reproducibility corresponding to the real image, and also good in sharpness, can be obtained, whereby diagnosis with high reliability by means of a radiation image is rendered possible. In one embodiment, only image signals detected during periods of irradiation by the stimulating ray are read.

Abstract: There are disclosed a radiation image storage panel which comprises a stimulable phosphor layer on a support, wherein the stimulable phosphor layer has a fine pillar-shaped block structure, and a process of making a radiation image storage panel having a stimulable phosphor layer on a support, which comprises getting the stimulable phosphor layer having a fine pillar-shaped block structure. Scattering of the stimulation exciting light within the stimulable phosphor layer of the present invention can be markedly reduced since the stimulable phosphor layer has a block structure shaped in fine pillars, whereby it is possible to improve sharpness of the image. Also, radiation sensitivity and graininess of the image can be improved by enlargement of the stimulable phosphor layer without lowering sharpness of the image since lowering in sharpness of the image due to increase of the stimulable phosphor layer is little.

Abstract: A radiation image storage panel having a stimulable phosphor layer provided on a substrate with a honeycomb structure constituted of a number of cells partitioned by wall members filled with the stimulable phosphor is prepared by forming the substrate for phosphor layer by casting in a mother mold or etching of the substrate and filling the cells on the substrate with the stimulable phosphor. This radiation image storage panel can give images of markedly improved sharpness.

Abstract: Disclosed is a radiation image storage panel having at least one stimulable phosphor layer on a support and a protective layer provided on the stimulable phosphor layer, wherein the protective layer comprises at least two layers of which regains under a relative humidity of 90% on a sorption isotherm at 25.degree. C. are different by 0.5% or more.According to this invention, a radiation image storage panel which has good humidity resistance and can be used for a long term is obtained.

Abstract: A method of reading out a radiographic image by storing radiation energy corresponding to a radiographic image on a stimulative phosphor layer on a panel, scanning the layer with a semi-conductor laser to release the energy as fluorescence, and detecting the fluorescence to form an image, wherein wavelengths having an intensity lower than an excitation wavelength intensity of said laser are removed by optical means before scanning the layer.

Abstract: A method for reading out a radiographic image by detecting the stimulated emission having an extremely high intensity. This high intensity is obtained by the choice of the Ar.sup.+ laser beam as a stimulating ray.

Abstract: In a radiographic image conversion method in which a stimulating light is irradiated to a panel storing a radiation energy in the form of an image to reproduce and then to read out the image, the response speed of a stimulation and the reading speed of a radiographic image area increased by making use of (1) a phosphate type phosphor having the composition, xM.sub.3 (PO.sub.4).sub.2.NX.sub.2 :yA or M.sub.3 (PO.sub.4).sub.2 :yA, which is a highly sensitive phosphor capable of readily releasing the stored energy when a stimulating light is irradiated to the phosphor, and (2) the stimulating light having the range of the wavelengths from a visible ray of not shorter that 500 nm to an infrared ray.