Summary of Tumor Dosimetry Results and Response
| Parameter | Sample size | Median | Range |
|---|---|---|---|
| Initial tumor volume (mL) | 60 | 34 | 2 to 423 |
| Volume decrease during tracer SPECT/CT* (%) | 60 | 12 | −10 to 49 |
| Volume decrease during therapy SPECT/CT† (%) | 60 | 30 | 2 to 76 |
| Decrease in product of diameters at 2 mo‡ (%) | 60 | 72 | −45 to 100 |
| Average dose (cGy) | 57 | 341 | 102 to 711 |
| EUD (cGy) | 57 | 391 | 113 to 764 |
| Maximum dose (cGy) | 57 | 508 | 162 to 1,404 |
| D99 (cGy) | 57 | 203 | 35 to 373 |
| D80 (cGy) | 57 | 269 | 58 to 466 |
↵* Difference in volumes defined on first and last posttracer scans (6 d).
↵† Difference in volumes defined on first and last posttherapy scans (∼6 d).
↵‡ Difference in product of largest perpendicular diameters at 2 mo compared with the first posttracer imaging time point.
Results for individual tumors are given in the supplemental material.