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Table 2 CT technique summary

From: Radiation dosimetry of 18F-FDG PET/CT: incorporating exam-specific parameters in dose estimates

CT technique description

Tube potential

Tube current

Revolution time

Collimator width

Pitch

Effective mAsa

CTDIvol

DLP

Effective Dose

Effective dose per unit mAs

(kVp)

(mA)

(s)

(mm)

  

(mGy)

(mGy cm)

(mSv)

(mSv/mAs)

Standard male

120

78 ± 8.2

0.8

10 or 40

1.75

38.6 ± 10.0

5.1 ± 0.6

464 ± 86

5.3 ± 1.0

0.142 ± 0.026

Standard female

120

72 ± 11

0.8

10 or 40

1.75

39.4 ± 12.4

4.8 ± 0.7

407 ± 73

4.6 ± 0.8

0.124 ± 0.028

Diagnostic

male

120

236 ± 86

0.6

20 or 40

1.375

116 ± 40.5

12.1 ± 2.8

1185 ± 249

17.4 ± 3.7

0.164 ± 0.063

Diagnostic

female

120

223 ± 109

0.6

20 or 40

1.375

122 ± 59.3

10.2 ± 3.9

912 ± 368

13.4 ± 5.5

0.121 ± 0.039

  1. Data are the mean ± standard deviation
  2. aEffective mAs is calculated as [(mA*tube rotation)/pitch]