RT Journal Article SR Electronic T1 Reply: Medical Isotope Crisis JF Journal of Nuclear Medicine Technology JO J. Nucl. Med. Technol. FD Society of Nuclear Medicine SP 139 OP 139 DO 10.2967/jnmt.115.155242 VO 43 IS 2 A1 Thomas J. Ruth YR 2015 UL http://tech.snmjournals.org/content/43/2/139.2.abstract AB