Table II.
Comparison of selected demographic data, contrast usage, radiation exposure, fluoroscopy and study times between VesselNavigator guided catheterizations with CT- or MRI-derived 3D roadmap overlay
| Parameter | Total (n = 22) | CT (n = 8)* | MRI (n = 14)** | P-value | |
|---|---|---|---|---|---|
| Age [years] | 16 (4.9–64) | 12.7 (7.7–64) | 21.7 (4.9–62) | NS | |
| Weight [kg] | 55 (16.5–116) | 40.5 (29–80) | 68 (16.5–116) | NS | |
| BSA [m2] | 1.6 (0.7–2.35) | 1.2 (1.05–2.0) | 1.8 (0.7–2.35) | NS | |
| Total contrast | [ml] | 130 (18–374) | 60.5 (40–315) | 174 (18–374) | NS |
| [ml/kg] | 2.4 (0.4–7.5) | 1.5 (1.1–3.9) | 2.9 (0.4–7.5) | NS | |
| Dose area product | [cGy·cm2] | 5480.4(1507–24291.4) | 6797(1507–16694.1) | 4418(1598–24291.4) | NS |
| [cGy·cm2/kg] | 125.4 (24.9–349.3) | 162.3 (48.6–303.5) | 57.6 (24.9–238.1) | 0.014 | |
| Fluoroscopy time | [min] | 23.3 (5.3–53.5) | 23.3 (9.3–53.5) | 22.5 (5.3–40) | NS |
| [min × kg] | 1176 (237.6–4640) | 952.2 (288.3–3600) | 1313 (237.6–4640) | NS | |
| Study time[min] | 150.5 (40–273) | 127.5 (90–242) | 161.5 (40–273) | NS | |
*
All done on Xper
**
9/14 done with Allura Clarity (Philips Healthcare).