Table 1 Main characteristics of the four SPECT-CT systems used in the study
From: Quantitative capabilities of four state-of-the-art SPECT-CT cameras
Name | SPECT detector | NEMA spatial resolution awith LEHR collimator (mm) | CT b | |||
|---|---|---|---|---|---|---|
Planar | SPECT Central | SPECT Peripheral | ||||
Radial | Tangential | |||||
General Electric Discovery NM/CT 670 | 3/8 in. NaI crystal | 7.4 | ≤9.9 | ≤9.9 | ≤7.5 | 80, 100, 120, and 140 kV |
59 PMT | 10 to 440 (100) mA | |||||
1 ADC/PMT | 0.5, 0.6, 1.0, and 1.5 s rotation time (in spiral mode) | |||||
40 × 54 cm FOV | 24 rows - maximum 16 slices/rotation | |||||
General Electric Infinia Hawkeye 4 | 3/8 in. NaI crystal | 7.4 | ≤9.9 | ≤9.9 | ≤7.5 | 120 and 140 kV |
59 PMT | 1.0, 1.5, 2.0, and 2.5 mA | |||||
1 ADC/PMT | 2.0 or 2.6 rpm gantry rotation | |||||
40 × 54 cm FOV | 4 rows - 4 slices per rotation | |||||
Philips Brightview XCT | 3/8 in. NaI crystal | 7.4 | ≤10.3 | ≤10.5 | ≤9.0 | 120 kV |
59 PM | 2.5, 5, 10, 15, and 20 mA | |||||
1 ADC/PMT | 12 s (fast) and 60 s (slow) rotation times | |||||
40.6 × 54 cm FOV | CsI flat panel 14 cm axial FOV detector | |||||
Siemens Symbia T series | 3/8 in. NaI crystal | 7.4 | ≤11.4 | ≤11.7 | ≤8.4 | 80, 110, and 130 kV |
59 PMT | T2: 30 to 240 (100) mA; 0.8, 1.0, 1.5 s rotation time; 2 rows - 2 slices/rotation | |||||
38.7 × 53.3 cm FOV | T6: 20– 345 (100) mA; 0.6, 0.8, 1.0, 1.5 s rotation time; 16 rows - maximum 6 slices/rotation | |||||
T16: 20 to 345 mA; 0.5, 0.6, 1.0, and 1.5 s rotation time; 24 rows - maximum 16 slices/rotation | ||||||