TY - JOUR T1 - Expression of Tracer Concentration JF - Journal of Nuclear Medicine JO - J Nucl Med SP - 2121 LP - 2121 VL - 46 IS - 12 AU - Barry R. Freed Y1 - 2005/12/01 UR - http://jnm.snmjournals.org/content/46/12/2121.1.abstract N2 - ER -