TY - RPRT TI - Quantification in PET: what is it? Can we do it? Do we need it? AU - Paul K Marsden PY - 2004 DO - 10.1097/01.mnm.0000134326.08041.af UR - https://pubmed.ncbi.nlm.nih.gov/15208487/ ID - 15208487 ER -