Table 2:
P values from the assessment of TTP, peak opacification, and AUC differences when comparing injection protocols: variable rate and volume with constant duration (2 seconds)*
| Rate | TTP Capillary | TTP Arterial | TTP Venous | Peak Capillary | Peak Arterial | Peak Venous | AUC Capillary | AUC Arterial | AUC Venous |
|---|---|---|---|---|---|---|---|---|---|
| Overall | .0334 | .0102 | .0363 | .0009 | .0057 | .0003 | .0004 | .0003 | <.0001 |
| 2–4 mL/s | .9598 | .4923 | .4592 | .1147 | .0179 | .0020 | .1111 | .0152 | .0002 |
| 2–6 mL/s | .1024 | .0110 | .0302 | .0022 | .0038 | .0002 | .0007 | .0003 | <.0001 |
| 2–8 mL/s | .0126 | .0041 | .0114 | .0002 | .0011 | <.0001 | <.0001 | <.0001 | <.0001 |
| 4–6 mL/s | .1117 | .0404 | .1165 | .0503 | .4158 | .2065 | .0171 | .0512 | .0584 |
| 4–8 mL/s | .0139 | .0153 | .0465 | .0034 | .1592 | .0534 | .0018 | .0062 | .0020 |
| 6–8 mL/s | .2680 | .6066 | .6069 | .1678 | .5229 | .4355 | .2423 | .2739 | .0918 |
Note:—TTP indicates time-to-peak; AUC, area under curve.
*
P values for paired contrasts were not calculated if no overall significant difference of the group was observed.