Patent ID: 7382858

Claim:
An X-ray computed tomography (CT) apparatus comprising: a table unit configured to support a subject to be examined; a table moving unit configured to move the table unit; a scan section configured to apply radiation to the subject supported by the table unit in an imaging space, wherein said scan section is configured to execute a first scan to apply the radiation to an imaging region of the subject, wherein said scan section is configured to apply the radiation to the imaging region of the subject to generate first projection data, wherein said scan section is configured to thereafter execute a second scan to apply the radiation to the imaging region of the subject with a contrast agent administrated therein to generate second projection data; an image generator configured to reconstruct a first tomographic image of a section of the subject along a direction in which the table unit is moved on the basis of the first projection data, wherein said image generator is configured to thereafter reconstruct a second tomographic image of the subject corresponding to the first tomographic image on the basis of the second projection data in real time with respect to the execution of the second scan, and wherein said image generator is configured to generate a third image on the basis of differential data based on subtraction processing between the first tomographic image and the second tomographic image; a display device configured to display the third image generated by the image generator in real time with respect to the execution of the second scan; and an input unit configured to receive a scan condition, wherein said input unit is configured to receive a change in a speed of the table unit in real time during the second scan of the subject including the contrast agent, wherein the change in the speed of the table unit is based on a speed of the contrast agent visible within the real time display of the third image.