Table 1.
List of the 17 scanner types included in this study, specified by manufacturer, device name, head coil, and field strength.
| Manufacturer | Device | Coil | Bo [T] | Sites | Examinations |
Clinical status |
Age | Encoding | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Σ | ♀ | ♂ | Normal | MCI | AD | |||||||
| General Electric | Excite | HD | 1.5 | 4 | 50 | 9 | 41 | 13 | 23 | 14 | 73.3 ± 8.0 | Excite HD 1.5T |
| General Electric | Excite | PA | 1.5 | 19 | 276 | 117 | 159 | 78 | 130 | 68 | 75.3 ± 6.9 | Excite PA 1.5T |
| General Electric | Excite | PA | 3.0 | 5 | 20 | 13 | 7 | 10 | 6 | 4 | 77.0 ± 5.3 | Excite PA 3.0T |
| General Electric | Genesis | HD | 1.5 | 6 | 80 | 33 | 47 | 19 | 44 | 17 | 74.9 ± 6.6 | Genesis HD 1.5T |
| General Electric | Genesis | HD | 3.0 | 1 | 6 | 3 | 3 | 2 | 2 | 2 | 74.8 ± 6.5 | Genesis HD 3.0T |
| General Electric | HDx | PA | 1.5 | 4 | 23 | 11 | 13 | 2 | 13 | 8 | 73.6 ± 6.6 | HDx PA 1.5T |
| General Electric | HDx | PA | 3.0 | 1 | 3 | 0 | 3 | 2 | 1 | 0 | 74.3 ± 2.6 | HDx PA 3.0T |
| Philips | Achieva | HD | 1.5 | 2 | 25 | 8 | 17 | 8 | 9 | 8 | 72.5 ± 5.2 | Achieva HD 1.5T |
| Philips | Achieva | PA | 1.5 | 7 | 82 | 25 | 57 | 24 | 42 | 24 | 76.0 ± 6.6 | Achieva PA 1.5T |
| Philips | Achieva | PA | 3.0 | 9 | 48 | 21 | 27 | 16 | 22 | 10 | 73.5 ± 7.5 | Achieva PA 3.0T |
| Siemens | Allegra | HD | 2.89 | 3 | 29 | 16 | 13 | 10 | 14 | 5 | 75.6 ± 8.0 | Allegra HD 3.0T |
| Siemens | Avanto | PA | 1.49 | 6 | 66 | 28 | 38 | 22 | 19 | 15 | 74.8 ± 7.1 | Avanto PA 1.5T |
| Siemens | Sonata | HD | 1.49 | 4 | 60 | 28 | 32 | 15 | 28 | 17 | 76.4 ± 6.2 | Sonata HD 1.5T |
| Siemens | Sonata | PA | 1.49 | 3 | 47 | 15 | 32 | 11 | 28 | 8 | 75.9 ± 7.6 | Sonata PA 1.5T |
| Siemens | Symphony | HD | 1.49 | 2 | 36 | 21 | 15 | 9 | 19 | 8 | 74.3 ± 5.8 | Symphony HD 1.5T |
| Siemens | Symphony | PA | 1.49 | 9 | 129 | 71 | 58 | 38 | 63 | 28 | 76.7 ± 6.8 | Symphony PA 1.5T |
| Siemens | Trio | PA | 2.89 | 13 | 93 | 48 | 45 | 21 | 51 | 21 | 74.6 ± 7.0 | Trio PA 3.OT |
| Totals | 98 | 1073 | 467 | 606 | 300 | 524 | 249 | 75.2 ± 6.0 | ||||
A total of 1073 examinations on 98 scanners are detailed by sites in column 5, subject in columns 6–8, and clinical status in columns 9–11. MR coils types are abbreviated as HD for conventional (quadrature birdcage) head coils, and PA for 8-channel phased array head coils.