Table 2.
Trigger levelsa according to CIRSE Guidelines [11]
| Dose metric | Trigger valueb |
|---|---|
| Peak skin dose (Dskin, max or PSD) | 3 Gy |
| Cumulative air kerma at a reference point (Ka,r) | 5 Gy |
| Air kerma area product (PKA) (assuming a 100 cm2 field at the reference point) | 500 Gy cm2 |
| Fluoroscopy time (only if PSD, Ka,r and PKA are not available)c | 60 min |
aThe radiation dose level that is intended to trigger follow-up for an FGI procedure, in order to ensure detection of any clinically relevant injury in an average patient
bThese criteria apply to radiation dose values at the end of a procedure
cFacilities performing potentially high-dose FGI procedures shall measure dose metrics and should not rely on fluoroscopy time alone