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Table 1 Technique factors and parameters set with a variable gantry speed. All images were acquired with 125 kVp x-ray tube setting

From: Evaluation of gantry speed on image quality and imaging dose for 4D cone-beam CT acquisition

Gantry speed (°/s)

Field of view (cm)

Matrix size

Pixel size (mm)

Slice thickness (mm)

Tube voltage (kVp)

mAs

Projections

Δt (min)

1.0

46.5

512 × 512

0.7

2.0

125

5716

5400

6.0

2.0

46.5

512 × 512

0.7

2.0

125

2856

2700

3.0

3.0

46.5

512 × 512

0.7

2.0

125

1903

1800

2.0

4.0

46.5

512 × 512

0.7

2.0

125

1427

1350

1.5

5.0

46.5

512 × 512

0.7

2.0

125

1140

1080

1.2

6.0

46.5

512 × 512

0.7

2.0

125

949

900

1.0