Table 3. Properties of the AIF and VOF curves.
| Scheme | Thickness (mm) | AUC of VOF (HU s) | AIF/VOF AUC ratio (%) | FWHM of AIF (s) |
|---|---|---|---|---|
| 1—Isotropic Gaussian filter | 0.8 | 1627 (888) | 57 (44) | 10.3 (2.3) |
| 2.4 | 1576 (788) | 54 (27) | 10.2 (2.2) | |
| 4.8 | 1492 (768) | 53 (37) | 10.4 (2.5) | |
| 9.6 | 1394 (772) | 47 (32) | 10.6 (2.5) | |
| 2—Bilateral filter | 0.8 | 2200 (1059) | 101 (23) | 9.4 (2.1) |
| 2.4 | 2129 (1086) | 100 (19) | 9.7 (2.1) | |
| 4.8 | 2102 (1031) | 91 (21) | 10.0 (2.2) | |
| 9.6 | 1902 (730) | 69 (22) | 9.9 (2.2) | |
| 4—Thick slice motion correction | 0.8 | 2200 (1059) | 101 (23) | 9.4 (2.1) |
| 2.4 | 2120 (996) | 96 (21) | 9.4 (2.0) | |
| 4.8 | 2068 (845) | 86 (24) | 9.7 (1.8) | |
| 9.6 | 1893 (900) | 68 (19) | 10.2 (2.0) |
The median (interquartile range) area under the curve of the venous output function (VOF), the ratio between the arterial input function (AIF) and VOF, and the full width at half maximum (FWHM) in case of isotropic Gaussian filtering (scheme 1), bilateral filtering (scheme 2), and bilateral filtering with thick slice motion correction (scheme 4).