16 Patienterne kan modtage en ny PDT- kur efter mindst 90 dages forløb efter den initiale behandling; der bør gives indtil tre PDT- kure (med et mellemrum på mindst 90 dage mellem hver injektion) til et tidligere behandlet segment, der stadig frembyder HGD eller til et nyt segment, hvis det initiale Barretts segment var > 7 cm langt.
Patients may receive a second course of PDT a minimum of 90 days after the initial therapy; up to three courses of PDT (each injection separated by a minimum of 90 days) should be given to a previously treated segment which still shows HGD or to a new segment if the initial Barrett's segment was > 7 cm in length.