| 摘要 |
PURPOSE:To furnish a two-dimensional radioactive ray detector of good operability and of short time necessary of reproducing a radioactive ray image by light-exciting the radioactive ray image recorded on an accumulative fluorescent film after the irradiation of radioactive ray with electron beam sweeping the fluorescent film emitting light containing an effective wavelength component in order to light-exciting an accumulative fluorescent film in interaction with an electron beam, and reproducing an image as a light signal. CONSTITUTION:An X-ray transmitted through a body 11 to be tested interacts with the accumulative fluorescent film 13, and an X-ray image is recorded. Then if a fluorescent film 14 is swept by the electron beam, the light exciting the film 13 is generated, and the light interacts with the film 13. The light of the amount corresponding to the X-ray image is generated from the film 13 by this interaction. This light is condensed by a light guide 12 and detected by a light detector 20. In a data processor 22, the situation of the electron beam and the amount of signals obtained in order from an amplifier 21 are stored, the data is processed, and the image is reproduced finally by a picture display 23. |
