PT - JOURNAL ARTICLE AU - Simmons, G. H. AU - Kereiakes, J. G. TI - Unidirectional versus Bidirectional Scanning—The Authors’ Reply DP - 1971 Nov 01 TA - Journal of Nuclear Medicine PG - 769--769 VI - 12 IP - 11 4099 - http://jnm.snmjournals.org/content/12/11/769.short 4100 - http://jnm.snmjournals.org/content/12/11/769.full SO - J Nucl Med1971 Nov 01; 12