| 摘要 |
PURPOSE:To make it possible to distinguish easily a marker of a catheter by obtaining an addition average image from continuous live images of a plurality of frames and selecting and displaying alternately this image and a live image from a conversion means by means of a selecting means. CONSTITUTION:A perspective image of a subject by means of X-ray from an X-ray tube 10 turns into a continuous image data through an image intensifier 14, an optical system 16, a TV camera 18 and an ADC 20 one of them turns into an add average image of a plurality of frames through an adder 22, a memory 24 and a subtractor 26. The addition average image and a live image from the ADC 20 are alternately selected by an action of a selector and they are alternately displayed on a TV monitor 32 through a DAC 30. For example, for a moved marker of a catheter, as the value of the concentration of the image thereof changes in the line image and the addition average image, the marker is seen as if it blinks and it is possible to distinguish easily the marker and to reduce burden of the work of an operator. |
