6. Embolisation endpoint. Injection should be continued until "near stasis" is observed in the artery directly feeding the tumor (i.e., the contrast the contrast column should clear within 2-5 heart beats). At that point, injection should be stopped - regardless of the amount of beads that have been actually administered - to avoid reflux of embolic material. Once the embolisation endpoint has been achieved, no additional embolic material should be injected. If the "near stasis" endpoint is not obtained after injection of the scheduled volume of beads, no additional embolization should be performed. This patient is likely to benefit from a second course after imaging follow-up.