Timing of scans to confirm iCPD

iRECIST recommends that imaging be repeated 4-8 weeks after iUPD was detected.

Questions:
Scans were repeated 9 weeks after the iUPD was first detected, because of scheduling issues.  Can those scans not be used?

Answer:
In order to ensure that patients do not have real and continuing disease progression that requires a change in management, it is recommended that scans be done within 4-8 weeks.  However, if the scan cannot be done within 8 weeks (scheduling, comorbid illness etc.) then the next scan (i.e., in this scenario, the scan done at 9 weeks) can be used to confirm iCPD.