Patent ID: 7599467

Claim:
An x-ray computed tomography apparatus comprising: a stationary unit; a rotatable unit mounted for rotation relative to said stationary unit around a rotational axis that proceeds through both said stationary unit and said rotatable unit; an x-ray source and a radiation detector mounted on said rotatable unit; and a device for contact-free transmission of signals and measured data between said rotatable unit and said stationary unit comprising two first transmission/reception devices mounted on the stationary unit and two second transmission/reception devices mounted on the rotatable unit, each of said first and second transmission/reception devices comprising a transmission/reception unit that transmits or receives a directed signal and an alignment unit that automatically aligns at least one of the two first transmission/reception devices to at least one of said two first transmission/reception devices, causing said directed signal to be transmitted between the aligned ones of said first and second transmission/reception devices during rotation of said rotational unit relative to said stationary unit.