Study | Scanner | Scan mode | ^{18}F-FDG dose (MBq) | Interval between ^{18}F-FDG injection and PET (min) | Interval between end induction therapy and posttreatment PET (d) | Interval between posttreatment PET and surgery (d) | Image reconstruction |

Schulte et al. (5) | ECAT 931-08-12 | Partial | 120–300 | 45–60 | 12–18 | Not mentioned | Multiplicative iterative (29) |

Franzius et al. (6) | ECAT EXACT 921/47 | Whole body | 3.7/kg | 60 | Not mentioned | 3–28 (mean, 21) | Filtered backprojection, Hanning filter, cutoff at Nyquist frequency |

Smith et al. (7) | ECAT EXACT 31 | Partial | 185 | 0–60^{*}, 60–70 | Not mentioned | Not mentioned | Filtered backprojection, Hanning filter, cutoff at Nyquist frequency |

Nair et al. (8) | ECAT EXACT 47 | Whole body | 370 | 45 | 14 | Few days | Whole-body format, Hanning filter, cutoff at cutoff frequency = 0.35 of Nyquist frequency |

Brücher et al. (9) | ECAT 951/R | Partial | 250–270 | 40 | 21 | <7 | Filtered backprojection, Hanning filter, cutoff at 0.4 cycles/pixel |

ECAT EXACT^{†} | |||||||

Ryu et al. (10) | Scanditronix | Partial | 370 | 45 | 14 | Not mentioned | Filtered backprojection to in-plane resolution of 7 mm in full width at half maximum |

Kitagawa et al. (11) | Advance | Partial | 244–488 | 40 | >28 | Not mentioned | Not mentioned |

Brink et al. (12) | ECAT EXACT 922 (+) | Whole body | 5/kg | 90 | Not mentioned | Not mentioned | Iterative, ordered-subset expectation maximization, segmented attenuation correction |

Chen et al. (13) | Advance | Partial | 259–407 | 60 | Not mentioned | Not mentioned | Corrections of data for random and scattered coincidences and attenuation; Hanning filter |

Wieder et al. (14) | ECAT EXACT | Partial | 300–400 | 60 | 21–28 | < 7 | Iterative, ordered-subset expectation maximization (8 iterations, 4 subsets), postreconstruction smoothing with 4-mm Gaussian filter |

Song et al. (15) | ECAT HR+ 2D | Whole body | 555 | 60 | 21–28 | Just before | Not mentioned |

Cascini et al. (16) | ECAT EXACT 47 | Whole body | 300–385 | 60 | Not mentioned | Few days | Iterative, ordered-subset expectation maximization (2 iterations, 16 subsets) |

Huang et al. (17) | ECAT EXACT | Partial | 259–370 | 45 | 7 | Not mentioned | Not mentioned |

Wieder et al. (18) | ECAT EXACT | Partial | 300–400 | 40 | 21–28 | 21–28 | Iterative, ordered-subset expectation maximization (8 iterations, 4 subsets), and then smoothed in 3 dimensions using 4-mm Gaussian filter |

Iagaru et al. (19) | ECAT EXACT 953A | Whole body | 550 | 45 | 7–36 (mean ± SD, 16 ± 9) | Not mentioned | Not mentioned |

Biograph LSO PET/CT^{‡} | 60 | ||||||

Nishiyama et al. (20) | ECAT EXACT HR+ | Whole body | 185–200 | 60 | 12 (range, 2–24) | Not mentioned (32 [range, 19–40] between chemotherapy and surgery) | Iterative, ordered-subset expectation maximization (2 iterations, 8 subsets) |

Benz et al. (21) | Biograph Duo | Whole body | 7.77/kg | 77 ± 8.7 | Not mentioned | Not mentioned | Iterative, ordered-subset expectation maximization (2 iterations, 8 subsets), postreconstruction gaussian filter; final image resolution of 8.8 mm in full width at half maximum |

Smithers et al. (22) | Philips Allegro GSO | Whole body | 210–427 | 45 | 24–32 | Chemotherapy, 4 | Iterative, 3-dimensional row-action maximum-likelihood algorithm |

Chemoradiotherapy, 4.5 | |||||||

Ye et al. (23) | SHR-22000 | Partial | 370 | 60 | 4–14 (median, 8) | 2–22 (median, 12) | Hanning filter, cutoff at Nyquist frequency |