Table 1 Protocol example for imaging of LAA occlusion devices using a 3^rd generation dual source CT system

cCTA technique

High pitch single heart beat acquisition

Prospective ECG gating (step-and-shot)

Retrospective ECG gating

Retrospective ECG gating

Tube voltage

BMI <28: 70 kVp

BMI <28: 70 kVp

BMI <28: 70 kVp

BMI <28: 70 kVp

BMI 28.1–30: 80 kVp

BMI 28.1–30: 80 kVp

BMI 28.1–30: 80 kVp

BMI 28.1–30: 80 kVp

BMI 30.1–33: 90 kVp

BMI 30.1–33: 90 kVp

BMI 30.1–33: 90 kVp

BMI 30.1–33: 90 kVp

BMI >33: 100–120 kVp

BMI >33: 100–120 kVp

BMI >33: 100–120 kVp

BMI >33: 100–120 kVp

Tube current-time product

Automated tube current modulation (Care Dose 4D, Siemens)

Automated tube current modulation (Care Dose 4D, Siemens)

Automated tube current modulation (Care Dose 4D, Siemens)

Automated tube current modulation (Care Dose 4D, Siemens)

Slice thickness

0.6 mm

0.6 mm

0.6 mm

0.6 mm

Reconstruction increment

0.4

0.4

0.4

0.4

Reconstruction kernel

Bv40 (vascular kernel) (Siemens)

Bv40 (vascular kernel) (Siemens)

Bv40 (vascular kernel) (Siemens)

Bv40 (vascular kernel) (Siemens)

Reconstruction phase

70 % RR

40–70 % RR

20–70 % RR

10–90 % RR

Reconstruction technique

Iterative reconstruction level III (ADMIRE, Siemens)

Iterative reconstruction level III (ADMIRE, Siemens)

Iterative reconstruction level III (ADMIRE, Siemens)

Iterative reconstruction level III (ADMIRE, Siemens)

Contrast medium

80 cc iomeprol 400 (Bracco)^a

80 cc iomeprol 400 (Bracco)^a

80 cc iomeprol 400 (Bracco)^a

80 cc iomeprol 400 (Bracco)^a