RT Journal Article SR Electronic T1 Ottawa Heart Institute producing alternative to technetium-99 isotopes JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E325 OP E326 DO 10.1503/cmaj.109-3224 VO 182 IS 8 A1 Becky Rynor YR 2010 UL http://www.cmaj.ca/content/182/8/E325.abstract