X-ray diagnosis apparatus

An X-ray diagnosis apparatus comprising processing circuitry configured:

• to acquire a first X-ray image based on X-rays radiated onto a subject;
• to generate a second X-ray image and a third X-ray image from the first X-ray image;
• to acquire a fourth X-ray image on a basis of X-rays radiated onto a region of interest of the subject into which a medical device is inserted and onto a region other than the region of interest, in mutually-different radiation doses;
• and
• to obtain position information of the region of interest in the fourth X-ray image, wherein the processing circuitry is configured:
• to generate, on a basis of the position information, the second X-ray image in correspondence with a brightness level of the region of interest in the fourth X-ray image and the third X-ray image in correspondence with a brightness level of the region other than the region of interest in the fourth X-ray image, and
• to generate a subtraction image by calculating a difference between the region of interest in the fourth X-ray image and a region corresponding to the region of interest in the second X-ray image and calculating a difference between the region other than the region of interest in the fourth X-ray image and a region corresponding to the region other than the region of interest in the third X-ray image.

n X-ray diagnosis apparatus comprising processing circuitry configured:

• to acquire a first X-ray image based on X-rays radiated onto a subject;
• to generate a second X-ray image from the first X-ray image;
• to acquire a third X-ray image on a basis of X-rays radiated onto a region of interest of the subject into which a medical device is inserted and onto a region other than the region of interest, in mutually-different radiation doses;
• and
• to obtain position information of the region of interest in the third X-ray image, wherein the processing circuitry is configured:
• to generate, on a basis of the position information, the second X-ray image by adjusting a brightness level of a region corresponding to the region of interest in the first X-ray image in correspondence with a brightness level of the region of interest in the third X-ray image and adjusting a brightness level of a region corresponding to the region other than the region of interest in the first X-ray image in correspondence with a brightness level of the region other than the region of interest in the third X-ray image, and
• to generate a subtraction image by calculating a difference between the second X-ray image and the third X-ray image.