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 217 OP 218 VO 23 IS 3 A1 Porter, William C. A1 Eck, Laura YR 1995 UL http://tech.snmjournals.org/content/23/3/217.abstract AB