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Prior ACRIN and LSS PIDs may be found in 2 DICOM tags: (0010, 1000) Other Patient IDs and (0013, 0040) Clinical Trial Subject ID. These prior-PIDs are random 4- or 5-digit (ACRIN) or 6-digit (LSS) numbers that contain no screening site information; the LSS prior-PIDs may have leading zeroes which may or may not appear unless specified that they do so; examples:
- 2542 is an ACRIN prior-PID
- 18519 is an ACRIN prior-PID
- 022921 is an LSS prior-PID that may also be rendered as 22921
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