DICOM PS3.3 2019b - Information Object Definitions
C.8.8.15.8 Source Transit Time

The Source transit times between dwell positions of a remote afterloader may be considered by specifying a non-zero increment in the Cumulative Time Weight (300A,02D6) when the Source moves between Control Points. In this case the Channel Total Time (300A,0286) shall include the overall Source transit time for the Channel.

DICOM PS3.3 2019b - Information Object Definitions