Group 1

Group 2

Group 3

Tube voltage/tube current

120 kVp/110 mAseff

No. of detector layers

2 × 128

128

16

Collimation

0.6 mm

0.6 mm

1.2 mm

Rotation time

0.28 sec

0.5 sec

0.5 sec

Pitch value

3.0

1.2

1.2

Field of view

33 cm

50 cm

50 cm