| 摘要 |
PURPOSE:To enable the photographing of an RI-image having different sensitivity and resolving power characteristics by one collimator, by horizontally rotating collimators provided at every orifice different in sensitivity and resolving power characteristics on the basis of the imaginary line passing the center axis of a detector surface as a boundary so as to be separated with each other around the center axis of the detector. CONSTITUTION:The left half image 21A of a region to be detected obtained through piercing orifices 2A in one side of a collimator in an image obtained by the first photographing is arranged to the left side on display while the right half image 22B of a region to be detected through piercing orifices 2B in the other side of the collimator is arranged to the right side on the display. Subsequently, the collimator 2 is horizontally rotated 180 deg. around the center axis C of a detector 1 to perform the second photographing and the right half image 21b of a region to be detected obtained through the piercing orifices 2A in one side of the collimator is matched with the left half image 21A obtained on the display by the first photographing while the left half image 22A of a region to be detected obtained through the piercing orifices 2B in the other side of the collimator is matched with the right half image 22B obtained on the display by the first photographing and two images 21, 22 different in sensitivity and resolving power are obtained. |
