RT Journal Article SR Electronic T1 Filtering in Frequency Space JF Journal of Nuclear Medicine Technology JO J. Nucl. Med. Technol. FD Society of Nuclear Medicine SP 152 OP 160 VO 14 IS 3 A1 Galt, James R. A1 Hise, H. Lee A1 Garcia, Ernest V. A1 Nowak, David J. YR 1986 UL http://tech.snmjournals.org/content/14/3/152.abstract AB This is the third in a series of four continuing education articles on computers in nuclear medicine. After studying this article, the reader should be able to: 1) understand filtering concepts and frequency space; and 2) be able to determine the appropriate filter selection and its application for a given nuclear medicine procedure.