Methods and devices for data transmission

A computed tomography (CT) device, comprising:

• a scanner configured to scan a target object;
• a detector configured to acquire scan data, the detector including a plurality of detector modules;
• a data transmission device configured to perform data processing on the scan data;
• and
• an image reconstruction unit configured to perform image reconstruction on the processed scan data, so as to generate a scanned image of the target object, wherein
• the data transmission device include a plurality of communication links and a data processing unit, wherein the data processing unit is communicatively connected to a plurality of first communication links and at least one second communication link, the plurality of first communication links are configured to establish a plurality of communication connections between the data processing unit and the plurality of detector modules, and the at least one second communication link is configured to replace at least one failed communication link when the plurality of first communication links include the at least one failed communication link.

A device for data transmission, wherein the device is implemented on a computed tomography (CT) device, and the device comprises:

• a data processing unit being communicatively connected to a first communication link group and at least one second communication link, wherein the data processing unit is configured to:
• determine whether the first communication link group includes at least one failed communication link;
• in response to determining that the first communication link group includes at least one failed communication link, select, from the at least one second communication link, at least one target communication link matching the at least one failed communication link;
• and
• adjust the first communication link group to a second communication link group, and the second communication link group at least including the at least one target communication link.