Philips CARDIOMD Service Manual page 355

CardioMD AC Option
After approximately one year of using a line source, the line source housing's built-in copper
attenuator must be removed to enable extended use of the Gd-153 line sources. Instructions are
provided in section 12.5.3.9, page 12-75. Approximately one year after attenuator removal, the
Gd-153 sources will need to be replaced. See section 12.5.3.8, page 12-68.
CardioMD Service Manual 12-7
1MAN0158-H11 04-2005 CSIP Level 1