Table 6

Quantitative assessment of image quality with 64 and 320 multidetector CT

320 MDCT64 MDCTp Value
Attenuation
Non contrast
 Aorta6038<0.001
 Liver52490.085
CTCA
 Aorta5004950.801
 Septum85138<0.001
 Liver62660.466
Noise
Non contrast
 Aorta19200.564
 Liver34310.013
CTCA
 Aorta37400.014
 Septum3441<0.001
 Liver40410.558
CNR
Non contrast
 Aorta19200.564
 Liver34310.013
CTCA
 Aorta37400.014
 Septum3441<0.001
 Liver40410.558
  • Bold represents statistically significant values.

  • CNR, contrast to noise ratio; CTCA, CT coronary angiography; MDCT, multidetector CT.