PT - JOURNAL ARTICLE AU - Neff, Ralph AU - Hoops, Dick AU - Simmons, Guy TI - A Modified FORTRAN Program for the Calculation of Modulation Transfer Function DP - 1977 Dec 01 TA - Journal of Nuclear Medicine PG - 1238--1240 VI - 18 IP - 12 4099 - http://jnm.snmjournals.org/content/18/12/1238.short 4100 - http://jnm.snmjournals.org/content/18/12/1238.full SO - J Nucl Med1977 Dec 01; 18