Table 1 Imaging protocols depending on patient position and renal function.
Protocol A n = 5 | Protocol B n = 8 | Protocol C n = 10 | Protocol D n = 12 | |
|---|---|---|---|---|
Patients renal function | Partial renal function | Partial renal function | Anuria | Anuria |
Central drain evaluable | no | yes | no | yes |
Extremity positioning | Extremity over head | Extremity 90° angulated beside the thorax | Extremity over head | Extremity 90° angulated beside the thorax |
Patient position | Abdominal position | Supine position | Abdominal position | Supine position |
Scan parameter | ||||
Tube voltage [kV] | 70 kV | 80 kV | 70 kV | 80 kV |
Effective current-time product [mAs] | 150/180 mAs | 180 mAs | 150/180 mAs | 180 mAs |
Dose length product [mGy*cm] | 716 ± 58 | 1246 ± 76 | 734 ± 63 | 1223 ± 82 |
Effectiv radiation dose [mSv] | 0.36 ± 0.03 | 17.4 ± 1.1 | 0.37 ± 0.03 | 17.1 ± 1.2 |
Scan range [mm] | 265–340 | 454–630 | 265–340 | 454–630 |
Scan cycles | ||||
Temporal resolution 2 sec | 6 | — | 6 | — |
Temporal resolution 4 sec | 4 | — | 4 | — |
Temporal resolution 6 sec | 2 | 2 | ||
Temporal resolution 2.5 sec | — | 6 | — | 6 |
Temporal resolution 5 sec | — | 4 | — | 4 |
Temporal resolution 7.5 sec | — | 2 | 2 | |
Total scan time [sec] | 40 sec | 50 sec | 40 sec | 50 sec |
Contrast media (iomeprol 400 mg iodine/ml) | ||||
Amount | 18 g/45 ml | 18 g/45 ml | 32 g/80 ml | 32 g/80 ml |
Flow rate [ml/sec] | 5 ml/sec | 5 ml/sec | 5 ml/sec | 5 ml/sec |
