APPARATUS AND METHOD FOR RADIOGRAPHIC DIAGNOSIS

A radiographic diagnostic apparatus for irradiating radiations to the subject for diagnosis, which comprises radiation generator section for irradiating radiations to the subject, detecting section for detecting radiations passing through the subject, and converting the detection results into image data, the image data containing first image data before catheter insertion and second image data after catheter insertion, extracting section for extracting the desired portion from the first image data, image synthesizing section for combining the portion extracted at the extracting section with either the first image data or the second image data and converting the overlapping areas in the resulting combined data into different data to form third image data, and display section for displaying the third image data obtained at the image synthesizing section.