Table 5 Comparison of two CTA protocols (significant p value less than 0.05)
Groups | N | Mean | SD | t value | p value | |
|---|---|---|---|---|---|---|
Contrast volume | Group A | 30 | 60.0 | 0.0 | 18.310 | 0.0005 |
Group B | 30 | 31.5 | 7.0 | |||
Aorta HU | Group A | 30 | 386.4 | 64.8 | 4.005 | 0.0005 |
Group B | 30 | 313.2 | 49.9 | |||
RR mean | Group A | 30 | 315.9 | 43.3 | 2.051 | 0.047 |
Group B | 30 | 287.1 | 45.4 | |||
LR mean | Group A | 30 | 320.9 | 49.2 | 2.413 | 0.021 |
Group B | 30 | 284.4 | 46.5 | |||
Psoas mean | Group A | 30 | 53.4 | 3.5 | 0.528 | 0.600 |
Group B | 30 | 54.4 | 7.2 | |||
SD mean | Group A | 30 | 8.0 | 2.0 | 3.819 | 0.0005 |
Group B | 30 | 13.6 | 6.3 | |||
CTDIvol | Group A | 30 | 8.3 | 0.8 | 5.155 | 0.0005 |
Group B | 30 | 6.0 | 1.8 | |||
DLP | Group A | 30 | 266.4 | 25.9 | 5.155 | 0.0005 |
Group B | 30 | 192.5 | 58.7 | |||
ERD | Group A | 30 | 4.0 | 0.4 | 5.155 | 0.0005 |
Group B | 30 | 2.9 | 0.9 | |||
RR + LR mean | Group A | 30 | 318.4 | 45.0 | 2.281 | 0.028 |
Group B | 30 | 285.7 | 45.5 | |||
SNR | Group A | 30 | 42.8 | 13.7 | 4.456 | 0.0005 |
Group B | 30 | 25.1 | 11.3 | |||
CNR | Group A | 30 | 35.6 | 12.0 | 4.531 | 0.0005 |
Group B | 30 | 20.2 | 9.3 | |||