Patent ID: 7502438

Claim:
An X-ray CT apparatus having a rotating frame, a stationary frame, and a data communication link system for data communication between said rotating frame and said stationary frame, wherein said data communication link system comprises: a signal generation device located in said rotating frame, which divides the data into a plurality of channels for output; a plurality of receiving mediums corresponding to a plurality of channels, which are provided in said stationary frame around said rotating frame; a plurality of transmission mediums provided separately along the circumference of said rotating frame; and a switching device assigning to each transmission medium, the data from said plurality of channels output from said signal generation device, and switching the data to be transmitted to two adjacent transmission mediums into data of a same channel when an interval between the two adjacent transmission mediums passes nearby a receiving medium, wherein said plurality of transmission mediums and said plurality of receiving mediums conduct data communication by charge-coupling or electromagnetic-coupling; and N receiving mediums are provided so as to correspond with N channels, and said transmission mediums are provided as 2N components.