TY - RPRT TI - Algorithms for calculating detector efficiency normalization coefficients for true coincidences in 3D PET. AU - R D Badawi AU - M A Lodge AU - P K Marsden PY - 1998 DO - 10.1088/0031-9155/43/1/012 UR - https://pubmed.ncbi.nlm.nih.gov/9483631/ ID - 9483631 ER -