Table 1 Technical features of multidetector computed tomography (MDCT) systems with different numbers of rows
Detector row41632/64
Collimation4×2.5 mm16×0.75 mm32/64×0.625 mm
Rotation time500 ms370–420 ms330–400 ms
Current300 mAs300 mAs150 mAs
Voltage80 kV80 kV120 kV
Effective dose1–5 mSv1–5 mSv1–5 mSv
Slice thickness3 mm3 mm3 mm
Slice overlap1.5 mm1.5 mm1.5 mm
ECG pulsingYesYesYes