Table 1. Computed tomographic scan parameters.

Parameters
Scanner	Siemens SOMATOM Sensation 64
Scan type	Helical multi detector row CT angiography
Slice thickness	64 detector row ×0.6 mm collimator width
Helical detector pitch	0.9
Gantry rotation speed	0.37 s
Tube potential	120 kV
Tube current	180 mA
Contrast	Omnipaque 350 100 mL IV injection 4 mL per second
Scanning range	Pubic symphysis to 4 cm above umbilicus
Scanning direction	Caudo-cranial
Bolus tracking	+100 HU from common femoral artery with minimal delay
Automatic dose modulation (Siemens Care Dose 4D)	Disabled
Imaging reconstruction	1 mm/0.7 mm overlapping axial images

CT, computed tomographic; HU, Hounsfield units.