P values from the assessment of TTP, peak opacification, and AUC differences when comparing injection protocols: variable concentration*
| TTP Capillary | TTP Arterial | TTP Venous | Peak Capillary | Peak Arterial | Peak Venous | AUC Capillary | AUC Arterial | AUC Venous | |
|---|---|---|---|---|---|---|---|---|---|
| Overall | .2235 | <.0001 | .0072 | .0432 | .0040 | .0035 | .0789 | .0009 | .1901 |
| 100%–25% | <.0001 | .0086 | .0186 | .0023 | .0008 | .0004 | |||
| 100%–50% | .0977 | .0132 | .0122 | .0015 | .0038 | .0064 | |||
| 100%–75% | .2582 | .9593 | .1971 | .1609 | .1356 | .6618 | |||
| 25%–50% | .0004 | .8427 | .8466 | .8578 | .4980 | .2259 | |||
| 25%–75% | <.0001 | .0077 | .2277 | .0517 | .0245 | .0011 | |||
| 50%–75% | .0093 | .0118 | .1656 | .0360 | .0949 | .0166 |
* P values for paired contrasts were not calculated if no overall significant difference of the group was observed.