Key Dosimetry Quantities for Estimating Tumor AD per Administered Activity Using Contour-Based and Oversized VOI–Based Approaches
| Contour-based | Oversized VOI-based | |||||||
|---|---|---|---|---|---|---|---|---|
| Patient | V (mL) | d (mm) | TIAC (min) | Teff (h) | AD (Gy/GBq) | TIAC (min) | Teff (h) | AD (Gy/GBq) |
| 1 | 240 | 77 | 17 | 8.4 | 0.62 | 17 | 12.2 | 0.60 |
| 2 | 32 | 39 | 42 | 12.3 | 10.90 | 47 | 12.4 | 12.00 |
| 3 | 33 | 40 | 4 | 7.5 | 0.98 | 4 | 7.3 | 0.93 |
AD = absorbed dose; VOI = volume of interest; V = tumor volume; d = equivalent sphere diameter; TIAC = time-integrated activity coefficient; Teff = effective half-life.