| abstract |
When an insertion member is inserted into a blood vessel of a subject while visually recognizing a radiation moving image, it is possible to reduce erroneous operation of the insertion member while suppressing the radiation exposure amount of the subject. In capturing and displaying a moving image with an IVR in which a catheter (guide wire) is inserted into a blood vessel of a patient, initially, normal exposure conditions that prioritize reduction of exposure dose are set (200), and the guide wire When a blood vessel branch point exists within a predetermined distance from the distal end of the guide wire (212 is affirmative) or when the moving speed of the guide wire tip is less than the predetermined speed V (220 is affirmative), the radiation irradiation cycle The exposure condition is set such that T is shorter than normal and the radiation dose W is increased compared to normal, and the moving image is enlarged and displayed on the display (222). [Selection] Figure 7 |