Some countries may have a national/regional program of dosimetry auditing/inter-comparison, others may not. In these cases an audit can be arranged with an external authority (e.g. International Atomic Energy Authority [IAEA, Vienna, Austria], Imaging and Radiation Oncology Core [IROC, Houston, USA], etc.). However, any audit satisfying all of the above conditions will be considered valid.
If your Radiotherapy Department needs to set up an audit, we suggest the following institutions:
IROC – MDAnderson. (Information on setting up an audit with IROC, if required, can be found here.)
IAEA -Eastern Europe
IPEM-UK (host/visitor cross-check audits)
NCS Audit-The Netherlands
However, it is not mandatory to send an audit from one of these institutions: if a document satisfies all of the criteria detailed in the previous section it will always be evaluated and could be accepted even if the auditing institution is, for example, the Physics department of a neighboring hospital.