1. Components of CT‐protocols in the 64 included studies.
CT‐protocol components |
Number of studies |
Slice thickness (mm) 0.6‐2.9 3.0‐4.9 5.0‐6.9 7.0‐10.0 not stated |
6 9 36 4 9 |
Slice interval (mm) 0.6‐2.9 3.0‐4.9 5.0 10.0 not stated |
6 5 16 1 36 |
Voltage (kV)
120 140 200 not stated |
21 4 1 38 |
mAs product (mAs) 30‐100 100‐199 200‐299 ≥ 300 not stated |
4 5 5 4 46 |
CT: computed tomography. Atema 2015 was a multi‐centre study including six centres. The most commonly used CT‐protocol specified the following: slice thickness 3 mm; voltage 120 kV; and mAs product 165 mAs. These values are used in the table.