Abstract
During stomach radiography, the abdomen of a patient is pressured to take X-ray photographs of the stomach clearly. Pressing the abdomen makes barium in the stomach spread, so the clear image of the fold and lesion can be obtained. However, it is difficult to compress effectively, and the examination time become longer. The purpose of this research is the realization of the effective compression of abdomen in stomach radiography. The moving mechanism which consists of three layer rubber tube can move the pressure mechanism by using air pressure. This mechanism realizes fine tuning to the compression position of abdomen. These device and mechanism reduce the examination time and the burden to the patient. From thee evaluation experiments of the moving mechanism, it is showed that the moving mechanism propels the pressure bag well when 118N load is given to the pressure bag.