| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel art which suppresses artifacts due to movement of a subject before and after administration of a contrast medium in DSA (Digital Subtraction Angiography).SOLUTION: An image processor in one embodiment includes a selection part, a positional deviation calculation part and an image generation part. The selection part selects one of respective contrast image data (after administration of a contrast medium) or mask image (before administration of the contrast medium) as a positional deviation correction target when generating a DSA image, on the basis of selection input, an image processing condition or a photographing condition for the image processor. The positional deviation calculation part calculates a positional deviation having occurred due to movement of a subject before or after administration of the contrast medium between the contrast image data and the mask image data, on the basis of the contrast image data and the mask image data. The image generation part generates a DSA image by calculating each difference between each of the contrast image data and the mask image data, while shifting the object for correcting the positional deviation on the basis of the positional deviation. |
