Multi-slice computer tomography system with data transfer system with reduced transfer bandwidth

A computed tomography system comprising:

• a stationary part;
• a rotatable part, mounted for rotation around an examination axis relative to said stationary part;
• an x-ray source mounted on said rotatable part;
• a radiation detector unit mounted on said rotatable part opposite said x-ray source;
• a data acquisition unit mounted on said rotatable part and connected to said radiation detector unit for receiving radiation attenuation data from said radiation detector unit;
• an image reconstruction device that is stationary with respect to said rotatable part;
• a data transfer device disposed between said data acquisition unit and said image reconstruction device for transferring said attenuation data from said data acquisition unit to said image reconstruction device;
• a storage unit connected to said data acquisition unit for buffering at least a portion of said attenuation data received by said data acquisition unit before said attenuation data are transferred to said image reconstruction device;
• and
• said data acquisition unit comprising a data administration system for transferring a first portion of said attenuation data directly to said data transfer device in real time and for storing a second part of said attenuation data in said storage unit for subsequent transfer to said image reconstruction device via said data transfer device.