GANTRY-MOVED TYPE CT SCANNER

摘要

PROBLEM TO BE SOLVED: To provide a gantry-moved type CT scanner easily retractable in case of power failure. SOLUTION: The gantry 7 is provided with a drive wheel 33 driven via a reduction gear with a high reduction ratio, a freely rotating auxiliary wheel 37 arranged in the vicinity of the drive wheel 33, and a drive wheel lifting mechanism 50 for lifting the drive wheel 33 from a rail 5 and causing the auxiliary wheel 37 to abut against the rail 5.