Table 1 Scan parameters

CT plan scan (calcium score scan)

 Tube voltage (KV)

100

 Tube current (mAs)

414 (350, 562)

 Slice thickness (mm)

0.625

 Slice gap (mm)

0.625

 FOV (cm)

21.2

 Estimated effective dose (mSv)

0.67 (0.54, 0.88)

CCTA scan

 Tube voltage (KV)

100

 Tube current (mAs)

599 (599, 599)

 Slice thickness (mm)

0.625

 Slice gap (mm)

0.625

 FOV (cm)

21.2

 Retrospective gating

Yes

 Scan trigger mode

Bolus tracking

 Estimated effective dose (mSv)

2.87 (2.68, 3.05)