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Table 1 Examples of hybrid system parameters of AC applied to evaluate CCS (AC-CCS). The not declared parameters are identified by the acronym (nd)

From: Best practice for the nuclear medicine technologist in CT-based attenuation correction and calcium score for nuclear cardiology

Authors

Einsteinn JA et al. (2010)

Engbers EM et al. (2016)

Mylonas I et al. (2012)

IÅ¡gum I et al. (2018)

Bailey G et al. (2017)

Hybrid system

SPECT/CT

PET/CT

PET/CT

SPECT/CT

PET/CT

PET/CT

SPECT/CT

CT slices

16

16

64

64

64

64

16

ECG Gating - R-R interval (%)

no

no

no

no

no

no

no

Purpose

AC- CCS

AC- CCS

AC- CCS

AC- CCS

AC- CCS

AC- CCS

AC- CCS

Tube Potential / Current

120 kVp / ∼50 mAs

120 kVp / ∼9 mAs

120 kVp / ∼11 mAs

120 kVp / 20 mA

140 kVp / 20 – 210 mA

100 kVp / ∼11 mAs

120 kVp / 30 mA

Tube rotation (s)

nd

nd

nd

0.8

nd

nd

0.4

Pitch

0.94

2

1.5

nd

0.984 : 1

1.5

0.81

Slice thickness (mm)

1.50

0.75

1.20

5.00 - 2.50

3.75

3.00

5.00

CCS threshold (HU)

visual analysis

nd

visual analysis

visual analysis

50 manual

130

130

Breath

free breathing

light end-expiratory breath hold

free breathing

end-expiratory breath-hold

mid-to-end expiration

end-expiratory breath-hold

nd