Table 1 The demographic variables and imaging protocols of the recruited seven centers including internal cohorts from Hong Kong, and external cohorts from Mainland China and Germany.
Cohorts | Internal- Set-1 | Internal- Set-2 | Internal- Set-3 | External- Set-1 | External- Set-2 | External- Set-3 | External- Set-4 | |
|---|---|---|---|---|---|---|---|---|
Demographic variables | Number | 7 | 65 | 3 | 10 | 35 | 10 | 2 |
Female | 5 | 25 | 2 | 4 | 13 | 7 | 0 | |
Male | 2 | 40 | 1 | 6 | 22 | 3 | 2 | |
Age (years) | 32.7 (15–59) | 47.7 (12–80) | 67.0 (51–91) | 47.1 (32–64) | 60.9 (27–88) | 54.5 (16–70) | 60.0 (57–63) | |
Imaging protocols | Axial resolution (mm) | 0.64 (0.63–0.7) | 0.64 (0.51–0.78) | 0.69 (0.66–0.75) | 0.72 (0.68–0.81) | 0.73 (0.57–0.91) | 0.71 (0.64–0.78) | 0.73 (0.66–0.79) |
Slice thickness (mm) | 0.625 | 1.25 | 0.7 | 1.0 (7 cases) 1.5 (3 cases) | 3.0 | 0.625 (4 cases) 1.0 (5 cases) 1.25 (1 case) | 1.25 | |
Manufactor | GE Medical Systems; Milwaukee, WI, USA | GE Medical Systems; Milwaukee, WI, USA | SIEMENS Healthineers; Forchheim, Germany | n/a | Philips Healthcare, Cleveland, OH, USA | TOSHIBA, Canon Medical Systems, Tochigi, Japan/Anke High-tech Co., Ltd., Shenzhen, China | GE Medical Systems; Milwaukee, WI, United States | |
Manufacturer’s Model | LightSpeed VCT | LightSpeed Pro 32 | SOMATOM Definition AS+ | n/a | iCT 256 | Aquilion/ANATOM 64 Precision | Optima CT680 Series | |
Tube voltage (kvp) | 120 | 120 | 120 | n/a | 120 | 120 | 120 | |
Tube current (mA) | 120–200 | 50–502 | 229–399 | n/a | 30–347 | 180–350 | 209–401 | |
Patient position | Feet First-Supine | Feet First-Supine | Feet First-Supine | n/a | Head First-Supine | Head First -Supine | Head First-Supine | |
Intravenous contrast | Non-contrast | Non-contrast | Non-contrast | Non-contrast | Non-contrast | Non-contrast | Non-contrast | |
Inspiration | Inspiratory | Inspiratory | Inspiratory | Inspiratory | Inspiratory | Inspiratory | Inspiratory | |
