Table 2 Clinical parameters of PET/CT scanners

Vendor

Philips

Philips

GE

Philips

CT scanning

Tube voltage

120 kV

120 kV

120 kV

120 kV

Effective tube

current auto-mA up to 120 mA

100 mA

12 ~ 390 mA (Smart mA: Noise Index 25)

100 mA (variable by Dose Right)

Detector configuration

16 × 1.5 mm

64 × 0.625 mm

16 × 1.25 mm

64 × 0.625 mm

Slice thickness, mm

2

2

3.75

2

Transverse FOV, mm

600

600

700

600

PET scanning

2-[¹⁸F]FDG injection dose, MBq/kg

4

3

3.7

3.7

Scan time for each bed, mm

90

90

180

90

TOF

No

Yes

No

Yes

PET reconstruction

Reconstruction

LOR-RAMLA

3D-OSEM

3D-OSEM + PSF + Q-clear

3D-OSEM

Iterations

2

3

4

3

Subsets

n/a

33

12

33

Smoothing

n/a

n/a

Gaussian

n/a

FWHM of filter, mm

5.3

4.7

4.3

4.8

Matrix

144 × 144

144 × 144

192 × 192

144 × 144

Pixel size, mm

4 × 4 × 4

4 × 4 × 4

3.125 × 3.125 × 3.125

4 × 4 × 4