X-ray CT apparatus and X-ray CT imaging method

Details X-ray CT apparatus and X-ray CT imaging method X-ray CT apparatus and X-ray CT imaging method

2008-05-27

2008-05-27

Song, Hoon (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S015000

Reexamination Certificate

active

11266534

ABSTRACT:
The present invention aims to reduce exposure at a helical scan in an X-ray CT apparatus using an X-ray area detector typified by a multi-row X-ray detector or a flat panel. When the angle of an X-ray cone beam spread in a z direction is assumed to be Acone, a scanning gantry is tilted by Acone/2 to start X-ray irradiation/data acquisition of the helical scan, after which the X-ray irradiation/data acquisition is completed at the number of revolutions corresponding to “integral number n+0.5”.

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