Method for operating a computed tomography facility and computed tomography facility

A method for operating a computed tomography facility having a rotatable portion with at least one X-ray detector and a portion fixed relative to the rotatable portion with a computing facility configured to process detector data recorded with the at least one X-ray detector, wherein the at least one X-ray detector is assigned a preparation facility for ascertaining detector data to be transmitted to the computing facility via a communication path from raw data of the at least one X-ray detector and the communication path has a wireless communication link with a maximum transmission rate, and wherein, during an imaging process, the method comprises:

• dividing, by a selection unit of the preparation facility, the detector data into:
• (1) a first data stream with first detector data for reconstruction of an evaluable computed tomography image dataset after completion of raw data acquisition with the at least one X-ray detector with a data transmission rate corresponding at most to the maximum transmission rate;
• and (2) a second data stream comprising remaining detector data as second detector data;
• transferring the first data stream as a real-time transmission directly to the computing facility via the communication path;
• storing the second detector data temporarily in a temporary storage facility;
• and
• transmitting the second detector data to the computing facility via the communication path after completion of the raw data acquisition with the at least one X-ray detector and the transferring of the first data stream,
• wherein a temporal resolution of the first detector data is lower than a temporal resolution of all of the detector data.

A computed tomography facility comprising:

• a computing facility;
• at least one X-ray detector;
• a communication path having a wireless communication link with a maximum transmission rate;
• a preparation facility configured to ascertain detector data to be transmitted to the computing facility via the communication path from raw data of the at least one X-ray detector;
• and
• a rotatable portion with the at least one X-ray detector and a portion that is fixed relative to the rotatable portion with the computing facility configured to process detector data recorded with the at least one X-ray detector, wherein the at least one X-ray detector is assigned the preparation facility,
• wherein the preparation facility comprises:
• a selection unit configured to divide the detector data of an imaging process into:
• (1) a first data stream with first detector data for reconstruction of an evaluable computed tomography image dataset after completion of a raw data acquisition with the at least one X-ray detector with a data transmission rate corresponding at most to the maximum transmission rate;
• and (2) a second data stream comprising remaining detector data as second detector data;
• a temporary storage unit configured to temporarily store the second detector data of the second data stream in a temporary storage facility;
• and
• a transmission unit for direct real-time transmission of the first data stream via the communication path to the computing facility and, after completion of the raw data acquisition of the imaging process, for transmission of the second detector data via the communication path to the computing facility,
• wherein, for transmissions via the communication path, a buffer memory is configured to be used that allows a data packet to be resent in an event of a faulty transmission, and
• wherein the buffer memory is implemented as part of the temporary storage facility reserved for this purpose.