Influence of Image Acquisition on Radiation Dose and Image Quality: Full versus Narrow Phase Window Acquisition Using 320 MDCT

Table 2

Typical imaging and reconstruction parameters for complete versus narrow phase window acquisition at 320-row MDCTA.

	Complete phase window	Narrow phase window
Tube voltage	120 kVp	120 kVp
Tube current-time product	400 mA	400 mA
R-R phase	Complete phase with dose modulation; peak dose at 75%	66%–80%
Reconstruction filter kernel	Standard FC3	Standard FC3
Reconstruction field of view	≤250 mm	≤250 mm
Slice thickness: increment	0.5 mm : 0.3 mm	0.5 mm : 0.3 mm