TABLE I.
A table of lesion characteristics including nominal lesion density and contrast values for the arterial and portal venous phase liver inserts at 120 kVp. The nominal radiodensity of liver parenchyma is 80 HU for the arterial phase and 110 HU for the portal venous phase insert at 120 kVp. Lesions 5–6 and 11–12 refer to mixed density objects with specified outer/inner properties.
| Lesion index | Lesion density (HU) | Contrast (HU) | |||||
|---|---|---|---|---|---|---|---|
| Arterial | Venous | Diameter (mm) | Shape | Arterial | Venous | Arterial | Venous |
| 1 | 20 | 34 | Lobulated | 60 | 45 | 20 | 65 |
| 2 | 21 | 34 | Lobulated | 120 | 75 | 40 | 35 |
| 3 | 22 | 30 | Ellipsoid | 60 | 45 | 20 | 65 |
| 4 | 23 | 30 | Ellipsoid | 120 | 75 | 40 | 35 |
| 5 | 24 | 30/20 | Spherical/spherical | 100/45 | 90/45 | 20 | 20 |
| 6 | 25 | 30/20 | Spherical/spherical | 90/120 | 100/60 | 10 | 10 |
| 7 | 26 | 23 | Lobulated | 60 | 45 | 20 | 65 |
| 8 | 27 | 23 | Lobulated | 120 | 75 | 40 | 35 |
| 9 | 28 | 20 | Ellipsoid | 60 | 45 | 20 | 65 |
| 10 | 29 | 20 | Ellipsoid | 120 | 75 | 40 | 35 |
| 11 | 30 | 20/10 | Spherical/spherical | 100/45 | 90/45 | 20 | 20 |
| 12 | 31 | 20/10 | Spherical/spherical | 90/120 | 100/60 | 10 | 10 |
| 13 | 32 | 40 | Ellipsoid | 90 | 100 | 10 | 10 |
| 14 | 33 | 10 | Spherical | 60 | 75 | 20 | 35 |
| 15 | 34 | 10 | Spherical | 90 | 90 | 10 | 20 |
| 16 | 35 | 8 | Spherical | 60 | 75 | 20 | 35 |
| 17 | 36 | 8 | Spherical | 90 | 90 | 10 | 20 |
| 18 | 37 | 6 | Spherical | 60 | 75 | 20 | 35 |
| 19 | 38 | 6 | Spherical | 90 | 90 | 10 | 20 |