Ge Medical Systems Global Technology Company, LLC

Junko Sekiguchi

Tetsuya Horiuchi

Shinichi Iisaku

The present invention is directed to realize an X-ray CT apparatus for properly performing contrast imaging. An X-ray CT apparatus includes an imaging unit and a control unit for controlling the imaging unit. The control unit includes: a first control unit for performing a monitoring scan to monitor arrival of a contrast agent at a region of interest in a start position of a main scan in an imaging range of the main scan that is set along the body axis of the subject or a first monitoring position that is set before the start position in a scan progress direction and, on arrival of the contrast agent, starting the main scan; and a second control unit for monitoring whether or not the contrast agent has reached a region of interest in a second monitoring position provided on the forward side of the start position of the main scan in the imaging range in the scan progress direction on arrival of the main scan at the second monitoring position, when the contrast agent has reached the second monitoring position, continuing the main scan and, when the contrast agent has not reached the second monitoring position yet, performing a monitoring scan for monitoring arrival of the contrast agent.

X-ray CT apparatus and X-ray CT scanning method

To enable radiation rays to be efficiently used. A scout scan parameter setting unit sets a rotation movement position to which an X-ray tube and an X-ray detector are moved so as to rotate around a subject on the basis of subject information of a subject on which a scout scan is performed at the time of performing a scout scan. At the time of starting execution of the scout scan, a rotating unit moves the X-ray tube and the X-ray detector so as to rotate around the subject to the rotation movement position which is set by the scout scan parameter setting unit. After that, a scout scan is performed in the rotation movement position.

Radiographic apparatus and method of using the same

The quality of an image can be improved and radiation can effectively be utilized. In an imaging area of a subject where a main scan is performed, a specific scan area setting unit sets a specific scan area where a scan is performed under a specific scan condition allowing radiation exposure dose on the subject to be low. Then, the scan condition setting unit sets a main scan condition so that the specific scan area is scanned under the specific scan condition allowing the radiation exposure dose on the subject to be low.

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Tokyo, Japan

Junko Sekiguchi