TY - JOUR T1 - An Amplifier Providing Fixed Background Elimination and Contrast Enhancement in Scanning Systems JF - Journal of Nuclear Medicine JO - J Nucl Med SP - 754 LP - 760 VL - 7 IS - 10 AU - R. E. Clark AU - R. A. Shipley Y1 - 1966/10/01 UR - http://jnm.snmjournals.org/content/7/10/754.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -