摘要:
A radiation image read-out apparatus is constituted for exposing a recording material provided with a stimulable phosphor and carrying a radiation image stored thereon to stimulating rays which cause the recording material to emit light in proportion to the stored radiation energy, and photoelectrically detecting the emitted light to read out the radiation image. The apparatus is provided with a multi-layer optical filter whose reflectivity with respect to stimulating rays increases as the angle of incidence of stimulating rays increases. The multi-layer optical filter is disposed in the optical path of stimulating rays in the vicinity of the recording material or formed on the surface of the recording material on the stimualting ray irradiation side, thereby increasing the efficiency of utilization of stimulating rays. In one embodiment, a second multi-layer optical filter is disposed in the vicinity of or formed on the surface of the recording material on the emitted light detection side. The second filter substantially reflects stimulating rays and substantially transmits the emitted light.
摘要:
A radiation image read-out apparatus is constituted for exposing a recording material provided with a stimulable phosphor and carrying a radiation image stored thereon to stimulating rays which cause the recording material to emit light in proportion to the stored radiation energy, and photoelectrically detecting the emitted light by a photodetector to read out the radiation image. The photodetector is disposed on the side opposite to the stimulating ray irradiation side with respect to the recording material. A multi-layer optical filter substantially reflecting stimulating rays and substantially transmitting the light emitted by the recording material is disposed between the recording material and the photodetector.
摘要:
An image read-out apparatus includes a main scanning device for scanning a sheet carrying an image recorded thereon with a light beam in a main scanning direction and obtaining light carrying the image information from the sheet, a sub-scanning device for moving the sheet with respect to the light beam in a sub-scanning direction approximately normal to the main scanning direction, and a light detector for detecting the light obtained from the sheet. The light detector comprises a long photomultipler having a light receiving face extending along the main scanning line and positioned close to the sheet.
摘要:
A radiation image storage panel comprising a phosphor layer which contains a stimulable phosphor, characterized in that one surface of said phosphor layer is provided with a multi-layer optical filter having a reflectance of not less than 60% at the stimulation wavelength of said stimulable phosphor.
摘要:
A radiation image storage panel comprising a phosphor layer which comprises a stimulable phosphor, in which said phosphor layer consists essentially of a sintered stimulable phosphor and has a relative density of not less than 70%. Processes for the preparation for the same are also disclosed.
摘要:
A radiation image storage panel comprising a phosphor layer which contains a stimulable phosphor, characterized in that one surface of said phosphor layer is provided with a multi-layer optical filter which has a transmittance of not less than 70% for the light of the stimulation wavelength of said stimulable phosphor and at an incident angle in the range of 0.degree.-5.degree. and has a reflectance of not less than 60% for the light of said stimulation wavelength and at an incident angle of not smaller than 30.degree..
摘要:
A radiation image recording and read-out apparatus comprises a read-out and erasing unit provided with an image read-out device for irradiating stimulating rays to an image-recorded stimulable phosphor sheet and detecting light emitted by the stimulable phosphor sheet upon exposure to stimulating rays, and a device for erasing radiation energy remaining on the stimulable phosphor sheet. The read-out and erasing unit is reciprocated normal to the direction of irradiation of stimulating rays for carrying out image read-out during forward movement, and carrying out erasing by the erasing device during backward movement. The read-out and erasing unit may be provided with two erasing devices on either side of the image read-out device for carrying out image read-out by the image read-out device and erasing by the erasing device positioned on the upstream side of the image read-out device during forward movement, and carrying out image read-out by the image read-out device and erasing by the other erasing device positioned on the upstream side of the image read-out device during backward movement.
摘要:
A recording material is exposed to radiation carrying image information in order to store a radiation image thereon. The recording material is provided with a stimulable phosphor layer constituted of a cerium activated lanthanum oxyhalide phoshor which is represented by the general formula LaOX:xCe, where X is at least one halogen selected from the group consisting of Cl, Br, and I, and x is a number satisfying the condition 0
摘要翻译:将记录材料暴露于携带图像信息的辐射中,以便在其上存储辐射图像。 记录材料设置有由通式LaO x:x C e表示的铈活化镧氧卤素磷,其中X是选自Cl,Br和I中的至少一种卤素构成的可刺激的磷光体层,以及 x是满足条件0
摘要:
A radiation image read-out apparatus comprises a linear stimulating ray source for emitting stimulating rays to a linear portion of a stimulable phosphor sheet carrying a radiation image stored therein, and a line sensor constituted by many solid state photoelectric conversion devices. The line sensor extends at least over the length of the linear portion of the stimulable phosphor sheet exposed to stimulating rays. Light emitted by the linear portion of the stimulable phosphor sheet upon stimulation thereof is received and photoelectrically converted by the solid state photoelectric conversion devices. The portion exposed linearly to stimulating rays and the line sensor are moved with respect to the stimulable phosphor sheet, and outputs of the line sensor are sequentially read out in accordance with the movement of the portion exposed linearly to stimulating rays and the line sensor with respect to the stimulable phosphor sheet.
摘要:
A radiation image recording and reproducing method comprising steps of:(i) causing a divalent europium activated complex halide phosphor having the formula (I):M.sup.II X.sub.2 .multidot.aM.sup.II X'.sub.2 .multidot.bMgX".sub.2 :xEu.sup.2+ (I) in which M.sup.II is at least one alkaline earth metal selected from the group consisting of Ba, Sr and Ca; each of X and X' is at least one halogen selected from the group consisting of Cl, Br and I, and X.noteq.X'; X" is at least one halogen selected from the group consisting of F, Cl, Br and I; and a, B and x are numbers satisfying the conditions of 0.1.ltoreq.a.ltoreq.10.0, 2.times.10.sup.-5 .ltoreq.b.ltoreq.2.times.10.sup.-2 and O