[1] Sao Paulo Canc Inst ICESP, Div Nucl Med, 4 SS,Doctor Arnaldo Ave,251 Consolacao, BR-01246000 Sao Paulo, Brazil
[2] Univ Sao Paulo FMUSP, Dept Radiol & Oncol, Sch Med, Div Nucl Med, Sao Paulo, Brazil
[3] Univ Penn, Childrens Hosp Philadelphia, Perelman Sch Med, Dept Radiol, Philadelphia, PA USA