| 摘要 |
PURPOSE:To display a picture at a real time, by a method wherein an RI distribution image from two detectors, positioned facing an opposite to each other with an object to be measured between, is composed in realtion to a position signal, and sensitivity of an image from one detector is corrected by an image from the other detector. CONSTITUTION:Scintillation detectors 1 and 2, positioned facing and opposite to each other positioning an object to be measured in between, are supported by an arm 6 of a holder 5. After RI is injected into the object to be measured, a position signal processing circuit 9 is actuated to output an x- and a y-position signal and an unblank signal to a position signal mixing circuit 11. Sample hold timing setting circuits 21A and 21B, tomographic control signal generating circuits 22A and 22B, and an unblank signal composing circuit 23 are installed to a unblank signal mixing circuit 11A, and signal Ou is outputted. Position signals from the detectors 1 and 2 are inputted to position signal mixing circuits 11B and 11C to control them by means of the control signal of the circuit 11A. Additionally, an inversion buffer 34 is mounted, and mixing position signals Ox, Oy are outputted to display (13) them by means of signals Ou, Ox and Oy. |
