title: The problem is background, not signal.
authors.affiliation: Harvard Medical School, Boston, MA 02215, USA. jfrangio@bidmc.harvard.edu
authors.forename: John V
authors.initials: JV
authors.lastname: Frangioni
mesh_terms: D003287:Contrast Media; D006801:Humans; D049268:Positron-Emission Tomography / Q000379:methods*
chemical_list: D003287:Contrast Media