... Volume: Page ... Tc is already used in over 90% of nuclear medicine scans and is generator- produced, making it inexpensive and widely available (5). The physical ... 51, 52), Mn (53), Zn (54), Pb (54), Rh (55), Ru (55, 56), Ir (55), Al (49, 57, 58), Ga,(49, 57−60), In (57 ...