Fig. 5
A representative case involving a 44-year-old patient with bilateral breast cancers: a 100% (acquisition time was 420 s), b 75% dose (acquisition time was 315 s), c 50% dose (acquisition time was 210 s), d 25% dose (acquisition time was 105 s), e 12.5% dose (acquisition time was 52 s), and f 6.25% dose (acquisition time was 26 s) of the simulated 18F-FDG dose. The left-sided breast cancer of 13 mm in diameter (white arrow) was confirmed with 6.25% dose as well as that for 100% dose (upper row). The right-sided breast cancer of 6 mm in diameter (black arrow) was unclear and difficult to distinguish from noise at the 12.5% dose or lower. Abbreviation: 18F-FDG, fluorine-18-labeled fluorodeoxyglucose