| 摘要 |
PURPOSE:To achieve a simpler and smaller equipment by providing rotatable intercepting bodies having openings inside an outer ring and an inner ring in which a plurality of detectors are arranged to reduce the number of single scan analyzers. CONSTITUTION:A gantry 10A is made up of an outer ring 12 having a detector (in), an inner ring 11 having a detector In, rotatable ring-like intercepting bodies 30 having two openings 31 and a rotary drive control section 32 which drives to rotate the intercepting bodies 30 while sending positional information thereof. gamma rays radiated from a radio isotope dosed into a sample (not illustrated) positioned in the intercepting bodies 30 are made incident to the detectors In and (in) from only the openings 31. Here, output data of the detectors In and (in) are determined according to the position of the intercepting bodies 30 by switching means 37a and 37b. Thus, the number of single scan analyzers can be reduced to simplify the equipment. |
