RT Journal Article SR Electronic T1 To the Editor JF Journal of Nuclear Medicine Technology JO J. Nucl. Med. Technol. FD Society of Nuclear Medicine SP 246 OP 246 VO 20 IS 4 A1 Maria V. Nagel A1 Sheila Rosenfeld A1 Johnny Scott A1 William H. Blahd YR 1992 UL http://tech.snmjournals.org/content/20/4/246.abstract AB